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  • Node.js Adventure - Node.js on Windows

    - by Shaun
    Two weeks ago I had had a talk with Wang Tao, a C# MVP in China who is currently running his startup company and product named worktile. He asked me to figure out a synchronization solution which helps his product in the future. And he preferred me implementing the service in Node.js, since his worktile is written in Node.js. Even though I have some experience in ASP.NET MVC, HTML, CSS and JavaScript, I don’t think I’m an expert of JavaScript. In fact I’m very new to it. So it scared me a bit when he asked me to use Node.js. But after about one week investigate I have to say Node.js is very easy to learn, use and deploy, even if you have very limited JavaScript skill. And I think I became love Node.js. Hence I decided to have a series named “Node.js Adventure”, where I will demonstrate my story of learning and using Node.js in Windows and Windows Azure. And this is the first one.   (Brief) Introduction of Node.js I don’t want to have a fully detailed introduction of Node.js. There are many resource on the internet we can find. But the best one is its homepage. Node.js was created by Ryan Dahl, sponsored by Joyent. It’s consist of about 80% C/C++ for core and 20% JavaScript for API. It utilizes CommonJS as the module system which we will explain later. The official definition of Node.js is Node.js is a platform built on Chrome's JavaScript runtime for easily building fast, scalable network applications. Node.js uses an event-driven, non-blocking I/O model that makes it lightweight and efficient, perfect for data-intensive real-time applications that run across distributed devices. First of all, Node.js utilizes JavaScript as its development language and runs on top of V8 engine, which is being used by Chrome. It brings JavaScript, a client-side language into the backend service world. So many people said, even though not that actually, “Node.js is a server side JavaScript”. Additionally, Node.js uses an event-driven, non-blocking IO model. This means in Node.js there’s no way to block currently working thread. Every operation in Node.js executed asynchronously. This is a huge benefit especially if our code needs IO operations such as reading disks, connect to database, consuming web service, etc.. Unlike IIS or Apache, Node.js doesn’t utilize the multi-thread model. In Node.js there’s only one working thread serves all users requests and resources response, as the ST star in the figure below. And there is a POSIX async threads pool in Node.js which contains many async threads (AT stars) for IO operations. When a user have an IO request, the ST serves it but it will not do the IO operation. Instead the ST will go to the POSIX async threads pool to pick up an AT, pass this operation to it, and then back to serve any other requests. The AT will actually do the IO operation asynchronously. Assuming before the AT complete the IO operation there is another user comes. The ST will serve this new user request, pick up another AT from the POSIX and then back. If the previous AT finished the IO operation it will take the result back and wait for the ST to serve. ST will take the response and return the AT to POSIX, and then response to the user. And if the second AT finished its job, the ST will response back to the second user in the same way. As you can see, in Node.js there’s only one thread serve clients’ requests and POSIX results. This thread looping between the users and POSIX and pass the data back and forth. The async jobs will be handled by POSIX. This is the event-driven non-blocking IO model. The performance of is model is much better than the multi-threaded blocking model. For example, Apache is built in multi-threaded blocking model while Nginx is in event-driven non-blocking mode. Below is the performance comparison between them. And below is the memory usage comparison between them. These charts are captured from the video NodeJS Basics: An Introductory Training, which presented at Cloud Foundry Developer Advocate.   Node.js on Windows To execute Node.js application on windows is very simple. First of you we need to download the latest Node.js platform from its website. After installed, it will register its folder into system path variant so that we can execute Node.js at anywhere. To confirm the Node.js installation, just open up a command windows and type “node”, then it will show the Node.js console. As you can see this is a JavaScript interactive console. We can type some simple JavaScript code and command here. To run a Node.js JavaScript application, just specify the source code file name as the argument of the “node” command. For example, let’s create a Node.js source code file named “helloworld.js”. Then copy a sample code from Node.js website. 1: var http = require("http"); 2:  3: http.createServer(function (req, res) { 4: res.writeHead(200, {"Content-Type": "text/plain"}); 5: res.end("Hello World\n"); 6: }).listen(1337, "127.0.0.1"); 7:  8: console.log("Server running at http://127.0.0.1:1337/"); This code will create a web server, listening on 1337 port and return “Hello World” when any requests come. Run it in the command windows. Then open a browser and navigate to http://localhost:1337/. As you can see, when using Node.js we are not creating a web application. In fact we are likely creating a web server. We need to deal with request, response and the related headers, status code, etc.. And this is one of the benefit of using Node.js, lightweight and straightforward. But creating a website from scratch again and again is not acceptable. The good news is that, Node.js utilizes CommonJS as its module system, so that we can leverage some modules to simplify our job. And furthermore, there are about ten thousand of modules available n the internet, which covers almost all areas in server side application development.   NPM and Node.js Modules Node.js utilizes CommonJS as its module system. A module is a set of JavaScript files. In Node.js if we have an entry file named “index.js”, then all modules it needs will be located at the “node_modules” folder. And in the “index.js” we can import modules by specifying the module name. For example, in the code we’ve just created, we imported a module named “http”, which is a build-in module installed alone with Node.js. So that we can use the code in this “http” module. Besides the build-in modules there are many modules available at the NPM website. Thousands of developers are contributing and downloading modules at this website. Hence this is another benefit of using Node.js. There are many modules we can use, and the numbers of modules increased very fast, and also we can publish our modules to the community. When I wrote this post, there are totally 14,608 modules at NPN and about 10 thousand downloads per day. Install a module is very simple. Let’s back to our command windows and input the command “npm install express”. This command will install a module named “express”, which is a MVC framework on top of Node.js. And let’s create another JavaScript file named “helloweb.js” and copy the code below in it. I imported the “express” module. And then when the user browse the home page it will response a text. If the incoming URL matches “/Echo/:value” which the “value” is what the user specified, it will pass it back with the current date time in JSON format. And finally my website was listening at 12345 port. 1: var express = require("express"); 2: var app = express(); 3:  4: app.get("/", function(req, res) { 5: res.send("Hello Node.js and Express."); 6: }); 7:  8: app.get("/Echo/:value", function(req, res) { 9: var value = req.params.value; 10: res.json({ 11: "Value" : value, 12: "Time" : new Date() 13: }); 14: }); 15:  16: console.log("Web application opened."); 17: app.listen(12345); For more information and API about the “express”, please have a look here. Start our application from the command window by command “node helloweb.js”, and then navigate to the home page we can see the response in the browser. And if we go to, for example http://localhost:12345/Echo/Hello Shaun, we can see the JSON result. The “express” module is very populate in NPM. It makes the job simple when we need to build a MVC website. There are many modules very useful in NPM. - underscore: A utility module covers many common functionalities such as for each, map, reduce, select, etc.. - request: A very simple HTT request client. - async: Library for coordinate async operations. - wind: Library which enable us to control flow with plain JavaScript for asynchronous programming (and more) without additional pre-compiling steps.   Node.js and IIS I demonstrated how to run the Node.js application from console. Since we are in Windows another common requirement would be, “can I host Node.js in IIS?” The answer is “Yes”. Tomasz Janczuk created a project IISNode at his GitHub space we can find here. And Scott Hanselman had published a blog post introduced about it.   Summary In this post I provided a very brief introduction of Node.js, includes it official definition, architecture and how it implement the event-driven non-blocking model. And then I described how to install and run a Node.js application on windows console. I also described the Node.js module system and NPM command. At the end I referred some links about IISNode, an IIS extension that allows Node.js application runs on IIS. Node.js became a very popular server side application platform especially in this year. By leveraging its non-blocking IO model and async feature it’s very useful for us to build a highly scalable, asynchronously service. I think Node.js will be used widely in the cloud application development in the near future.   In the next post I will explain how to use SQL Server from Node.js.   Hope this helps, Shaun All documents and related graphics, codes are provided "AS IS" without warranty of any kind. Copyright © Shaun Ziyan Xu. This work is licensed under the Creative Commons License.

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  • lxc containers hangs after upgrade to 13.10

    - by doug123
    I have 3 lxc containers. They were all working fine on 12.10 and I upgraded the containers with do-release-upgrade on the containers to 13.04 and 13.10 and that worked great. Then I upgraded the host to 13.04 and then 13.10 and now the 3 containers hang with this: >lxc-start -n as1 -l DEBUG -o $(tty) lxc-start 1383145786.513 INFO lxc_start_ui - using rcfile /var/lib/lxc/as1/config lxc-start 1383145786.513 WARN lxc_log - lxc_log_init called with log already initialized lxc-start 1383145786.513 INFO lxc_apparmor - aa_enabled set to 1 lxc-start 1383145786.514 DEBUG lxc_conf - allocated pty '/dev/pts/2' (5/6) lxc-start 1383145786.514 DEBUG lxc_conf - allocated pty '/dev/pts/13' (7/8) lxc-start 1383145786.514 DEBUG lxc_conf - allocated pty '/dev/pts/14' (9/10) lxc-start 1383145786.514 DEBUG lxc_conf - allocated pty '/dev/pts/15' (11/12) lxc-start 1383145786.514 DEBUG lxc_conf - allocated pty '/dev/pts/17' (13/14) lxc-start 1383145786.514 DEBUG lxc_conf - allocated pty '/dev/pts/18' (15/16) lxc-start 1383145786.514 DEBUG lxc_conf - allocated pty '/dev/pts/19' (17/18) lxc-start 1383145786.514 DEBUG lxc_conf - allocated pty '/dev/pts/20' (19/20) lxc-start 1383145786.514 INFO lxc_conf - tty's configured lxc-start 1383145786.514 DEBUG lxc_start - sigchild handler set lxc-start 1383145786.514 DEBUG lxc_console - opening /dev/tty for console peer lxc-start 1383145786.514 DEBUG lxc_console - using '/dev/tty' as console lxc-start 1383145786.514 DEBUG lxc_console - 6242 got SIGWINCH fd 25 lxc-start 1383145786.514 DEBUG lxc_console - set winsz dstfd:22 cols:177 rows:53 lxc-start 1383145786.514 INFO lxc_start - 'as1' is initialized lxc-start 1383145786.522 DEBUG lxc_start - Not dropping cap_sys_boot or watching utmp lxc-start 1383145786.524 DEBUG lxc_conf - mac address of host interface 'vethB4L35W' changed to private fe:7c:96:a0:ae:29 lxc-start 1383145786.525 DEBUG lxc_conf - instanciated veth 'vethB4L35W/vethVC61K2', index is '26' lxc-start 1383145786.529 DEBUG lxc_cgroup - cgroup 'memory.limit_in_bytes' set to '20G' lxc-start 1383145786.529 DEBUG lxc_cgroup - cgroup 'cpuset.cpus' set to '12-23' lxc-start 1383145786.529 INFO lxc_cgroup - cgroup has been setup lxc-start 1383145786.555 DEBUG lxc_conf - move 'eth0' to '6249' lxc-start 1383145786.555 INFO lxc_conf - 'as1' hostname has been setup lxc-start 1383145786.575 DEBUG lxc_conf - 'eth0' has been setup lxc-start 1383145786.575 INFO lxc_conf - network has been setup lxc-start 1383145786.575 INFO lxc_conf - looking at .44 42 252:0 / / rw,relatime - ext4 /dev/mapper/limitorderbook1-root rw,errors=remount-ro,data=ordered . lxc-start 1383145786.575 INFO lxc_conf - now p is . /. lxc-start 1383145786.575 INFO lxc_conf - looking at .52 44 0:5 / /dev rw,relatime - devtmpfs udev rw,size=32961632k,nr_inodes=8240408,mode=755 . lxc-start 1383145786.575 INFO lxc_conf - now p is . /dev. lxc-start 1383145786.575 INFO lxc_conf - looking at .61 52 0:11 / /dev/pts rw,nosuid,noexec,relatime - devpts devpts rw,mode=600,ptmxmode=000 . lxc-start 1383145786.575 INFO lxc_conf - now p is . /dev/pts. lxc-start 1383145786.575 INFO lxc_conf - looking at .68 44 0:15 / /run rw,nosuid,noexec,relatime - tmpfs tmpfs rw,size=6594456k,mode=755 . lxc-start 1383145786.575 INFO lxc_conf - now p is . /run. lxc-start 1383145786.575 INFO lxc_conf - looking at .69 68 0:18 / /run/lock rw,nosuid,nodev,noexec,relatime - tmpfs none rw,size=5120k . lxc-start 1383145786.575 INFO lxc_conf - now p is . /run/lock. lxc-start 1383145786.575 INFO lxc_conf - looking at .72 68 0:19 / /run/shm rw,nosuid,nodev,relatime - tmpfs none rw . lxc-start 1383145786.575 INFO lxc_conf - now p is . /run/shm. lxc-start 1383145786.575 INFO lxc_conf - looking at .73 68 0:21 / /run/user rw,nosuid,nodev,noexec,relatime - tmpfs none rw,size=102400k,mode=755 . lxc-start 1383145786.575 INFO lxc_conf - now p is . /run/user. lxc-start 1383145786.575 INFO lxc_conf - looking at .76 44 0:14 / /sys rw,nosuid,nodev,noexec,relatime - sysfs sysfs rw . lxc-start 1383145786.575 INFO lxc_conf - now p is . /sys. lxc-start 1383145786.575 INFO lxc_conf - looking at .77 76 0:16 / /sys/fs/cgroup rw,relatime - tmpfs none rw,size=4k,mode=755 . lxc-start 1383145786.575 INFO lxc_conf - now p is . /sys/fs/cgroup. lxc-start 1383145786.575 INFO lxc_conf - looking at .78 77 0:20 / /sys/fs/cgroup/cpuset rw,relatime - cgroup cgroup rw,cpuset,clone_children . lxc-start 1383145786.575 INFO lxc_conf - now p is . /sys/fs/cgroup/cpuset. lxc-start 1383145786.575 INFO lxc_conf - looking at .79 77 0:23 / /sys/fs/cgroup/cpu rw,relatime - cgroup cgroup rw,cpu . lxc-start 1383145786.575 INFO lxc_conf - now p is . /sys/fs/cgroup/cpu. lxc-start 1383145786.575 INFO lxc_conf - looking at .80 77 0:24 / /sys/fs/cgroup/cpuacct rw,relatime - cgroup cgroup rw,cpuacct . lxc-start 1383145786.575 INFO lxc_conf - now p is . /sys/fs/cgroup/cpuacct. lxc-start 1383145786.575 INFO lxc_conf - looking at .81 77 0:25 / /sys/fs/cgroup/memory rw,relatime - cgroup cgroup rw,memory . lxc-start 1383145786.575 INFO lxc_conf - now p is . /sys/fs/cgroup/memory. lxc-start 1383145786.575 INFO lxc_conf - looking at .82 77 0:26 / /sys/fs/cgroup/devices rw,relatime - cgroup cgroup rw,devices . lxc-start 1383145786.575 INFO lxc_conf - now p is . /sys/fs/cgroup/devices. lxc-start 1383145786.575 INFO lxc_conf - looking at .83 77 0:27 / /sys/fs/cgroup/freezer rw,relatime - cgroup cgroup rw,freezer . lxc-start 1383145786.575 INFO lxc_conf - now p is . /sys/fs/cgroup/freezer. lxc-start 1383145786.575 INFO lxc_conf - looking at .84 77 0:28 / /sys/fs/cgroup/blkio rw,relatime - cgroup cgroup rw,blkio . lxc-start 1383145786.575 INFO lxc_conf - now p is . /sys/fs/cgroup/blkio. lxc-start 1383145786.575 INFO lxc_conf - looking at .85 77 0:29 / /sys/fs/cgroup/perf_event rw,relatime - cgroup cgroup rw,perf_event . lxc-start 1383145786.575 INFO lxc_conf - now p is . /sys/fs/cgroup/perf_event. lxc-start 1383145786.575 INFO lxc_conf - looking at .94 77 0:30 / /sys/fs/cgroup/hugetlb rw,relatime - cgroup cgroup rw,hugetlb . lxc-start 1383145786.575 INFO lxc_conf - now p is . /sys/fs/cgroup/hugetlb. lxc-start 1383145786.575 INFO lxc_conf - looking at .95 77 0:31 / /sys/fs/cgroup/systemd rw,nosuid,nodev,noexec,relatime - cgroup systemd rw,name=systemd . lxc-start 1383145786.575 INFO lxc_conf - now p is . /sys/fs/cgroup/systemd. lxc-start 1383145786.575 INFO lxc_conf - looking at .96 76 0:17 / /sys/fs/fuse/connections rw,relatime - fusectl none rw . lxc-start 1383145786.575 INFO lxc_conf - now p is . /sys/fs/fuse/connections. lxc-start 1383145786.575 INFO lxc_conf - looking at .98 76 0:6 / /sys/kernel/debug rw,relatime - debugfs none rw . lxc-start 1383145786.575 INFO lxc_conf - now p is . /sys/kernel/debug. lxc-start 1383145786.575 INFO lxc_conf - looking at .101 76 0:10 / /sys/kernel/security rw,relatime - securityfs none rw . lxc-start 1383145786.575 INFO lxc_conf - now p is . /sys/kernel/security. lxc-start 1383145786.575 INFO lxc_conf - looking at .102 76 0:22 / /sys/fs/pstore rw,relatime - pstore none rw . lxc-start 1383145786.575 INFO lxc_conf - now p is . /sys/fs/pstore. lxc-start 1383145786.575 INFO lxc_conf - looking at .103 44 0:3 / /proc rw,nosuid,nodev,noexec,relatime - proc proc rw . lxc-start 1383145786.575 INFO lxc_conf - now p is . /proc. lxc-start 1383145786.575 INFO lxc_conf - looking at .104 44 9:2 / /data rw,relatime - ext4 /dev/md2 rw,errors=remount-ro,data=ordered . lxc-start 1383145786.575 INFO lxc_conf - now p is . /data. lxc-start 1383145786.575 INFO lxc_conf - looking at .105 44 8:1 / /boot rw,relatime - ext2 /dev/sda1 rw,errors=continue . lxc-start 1383145786.575 INFO lxc_conf - now p is . /boot. lxc-start 1383145786.576 DEBUG lxc_conf - mounted '/data/srv/lxc/as1' on '/usr/lib/x86_64-linux-gnu/lxc' lxc-start 1383145786.576 DEBUG lxc_conf - mounted 'none' on '/usr/lib/x86_64-linux-gnu/lxc//dev/pts', type 'devpts' lxc-start 1383145786.576 DEBUG lxc_conf - mounted 'none' on '/usr/lib/x86_64-linux-gnu/lxc//proc', type 'proc' lxc-start 1383145786.576 DEBUG lxc_conf - mounted 'none' on '/usr/lib/x86_64-linux-gnu/lxc//sys', type 'sysfs' lxc-start 1383145786.576 DEBUG lxc_conf - mounted 'none' on '/usr/lib/x86_64-linux-gnu/lxc//run', type 'tmpfs' lxc-start 1383145786.576 INFO lxc_conf - mount points have been setup lxc-start 1383145786.577 INFO lxc_conf - console has been setup lxc-start 1383145786.577 INFO lxc_conf - 8 tty(s) has been setup lxc-start 1383145786.577 INFO lxc_conf - rootfs path is ./data/srv/lxc/as1., mount is ./usr/lib/x86_64-linux-gnu/lxc. lxc-start 1383145786.577 INFO lxc_apparmor - I am 1, /proc/self points to 1 lxc-start 1383145786.577 DEBUG lxc_conf - created '/usr/lib/x86_64-linux-gnu/lxc/lxc_putold' directory lxc-start 1383145786.577 DEBUG lxc_conf - mountpoint for old rootfs is '/usr/lib/x86_64-linux-gnu/lxc/lxc_putold' lxc-start 1383145786.577 DEBUG lxc_conf - pivot_root syscall to '/usr/lib/x86_64-linux-gnu/lxc' successful lxc-start 1383145786.577 DEBUG lxc_conf - umounted '/lxc_putold/dev/pts' lxc-start 1383145786.577 DEBUG lxc_conf - umounted '/lxc_putold/run/lock' lxc-start 1383145786.577 DEBUG lxc_conf - umounted '/lxc_putold/run/shm' lxc-start 1383145786.577 DEBUG lxc_conf - umounted '/lxc_putold/run/user' lxc-start 1383145786.577 DEBUG lxc_conf - umounted '/lxc_putold/sys/fs/cgroup/cpuset' lxc-start 1383145786.577 DEBUG lxc_conf - umounted '/lxc_putold/sys/fs/cgroup/cpu' lxc-start 1383145786.577 DEBUG lxc_conf - umounted '/lxc_putold/sys/fs/cgroup/cpuacct' lxc-start 1383145786.577 DEBUG lxc_conf - umounted '/lxc_putold/sys/fs/cgroup/memory' lxc-start 1383145786.577 DEBUG lxc_conf - umounted '/lxc_putold/sys/fs/cgroup/devices' lxc-start 1383145786.577 DEBUG lxc_conf - umounted '/lxc_putold/sys/fs/cgroup/freezer' lxc-start 1383145786.577 DEBUG lxc_conf - umounted '/lxc_putold/sys/fs/cgroup/blkio' lxc-start 1383145786.577 DEBUG lxc_conf - umounted '/lxc_putold/sys/fs/cgroup/perf_event' lxc-start 1383145786.577 DEBUG lxc_conf - umounted '/lxc_putold/sys/fs/cgroup/hugetlb' lxc-start 1383145786.577 DEBUG lxc_conf - umounted '/lxc_putold/sys/fs/cgroup/systemd' lxc-start 1383145786.577 DEBUG lxc_conf - umounted '/lxc_putold/sys/fs/fuse/connections' lxc-start 1383145786.577 DEBUG lxc_conf - umounted '/lxc_putold/sys/kernel/debug' lxc-start 1383145786.577 DEBUG lxc_conf - umounted '/lxc_putold/sys/kernel/security' lxc-start 1383145786.577 DEBUG lxc_conf - umounted '/lxc_putold/sys/fs/pstore' lxc-start 1383145786.577 DEBUG lxc_conf - umounted '/lxc_putold/proc' lxc-start 1383145786.577 DEBUG lxc_conf - umounted '/lxc_putold/data' lxc-start 1383145786.577 DEBUG lxc_conf - umounted '/lxc_putold/boot' lxc-start 1383145786.577 DEBUG lxc_conf - umounted '/lxc_putold/dev' lxc-start 1383145786.577 DEBUG lxc_conf - umounted '/lxc_putold/run' lxc-start 1383145786.577 DEBUG lxc_conf - umounted '/lxc_putold/sys/fs/cgroup' lxc-start 1383145786.577 DEBUG lxc_conf - umounted '/lxc_putold/sys' lxc-start 1383145786.577 DEBUG lxc_conf - umounted '/lxc_putold' lxc-start 1383145786.577 INFO lxc_conf - created new pts instance lxc-start 1383145786.578 DEBUG lxc_conf - drop capability 'sys_boot' (22) lxc-start 1383145786.578 DEBUG lxc_conf - capabilities have been setup lxc-start 1383145786.578 NOTICE lxc_conf - 'as1' is setup. lxc-start 1383145786.578 DEBUG lxc_cgroup - cgroup 'memory.limit_in_bytes' set to '20G' lxc-start 1383145786.578 DEBUG lxc_cgroup - cgroup 'cpuset.cpus' set to '12-23' lxc-start 1383145786.578 INFO lxc_cgroup - cgroup has been setup lxc-start 1383145786.578 INFO lxc_apparmor - setting up apparmor lxc-start 1383145786.578 INFO lxc_apparmor - changed apparmor profile to lxc-container-default lxc-start 1383145786.578 NOTICE lxc_start - exec'ing '/sbin/init' lxc-start 1383145786.578 INFO lxc_conf - looking at .15 20 0:14 / /sys rw,nosuid,nodev,noexec,relatime - sysfs sysfs rw . lxc-start 1383145786.578 INFO lxc_conf - now p is . /sys. lxc-start 1383145786.578 INFO lxc_conf - looking at .16 20 0:3 / /proc rw,nosuid,nodev,noexec,relatime - proc proc rw . lxc-start 1383145786.578 INFO lxc_conf - now p is . /proc. lxc-start 1383145786.578 INFO lxc_conf - looking at .17 20 0:5 / /dev rw,relatime - devtmpfs udev rw,size=32961632k,nr_inodes=8240408,mode=755 . lxc-start 1383145786.578 INFO lxc_conf - now p is . /dev. lxc-start 1383145786.578 INFO lxc_conf - looking at .18 17 0:11 / /dev/pts rw,nosuid,noexec,relatime - devpts devpts rw,mode=600,ptmxmode=000 . lxc-start 1383145786.578 INFO lxc_conf - now p is . /dev/pts. lxc-start 1383145786.578 INFO lxc_conf - looking at .19 20 0:15 / /run rw,nosuid,noexec,relatime - tmpfs tmpfs rw,size=6594456k,mode=755 . lxc-start 1383145786.578 INFO lxc_conf - now p is . /run. lxc-start 1383145786.578 INFO lxc_conf - looking at .20 1 252:0 / / rw,relatime - ext4 /dev/mapper/limitorderbook1-root rw,errors=remount-ro,data=ordered . lxc-start 1383145786.578 INFO lxc_conf - now p is . /. lxc-start 1383145786.578 INFO lxc_conf - looking at .22 15 0:16 / /sys/fs/cgroup rw,relatime - tmpfs none rw,size=4k,mode=755 . lxc-start 1383145786.578 INFO lxc_conf - now p is . /sys/fs/cgroup. lxc-start 1383145786.578 INFO lxc_conf - looking at .23 15 0:17 / /sys/fs/fuse/connections rw,relatime - fusectl none rw . lxc-start 1383145786.578 INFO lxc_conf - now p is . /sys/fs/fuse/connections. lxc-start 1383145786.578 INFO lxc_conf - looking at .24 15 0:6 / /sys/kernel/debug rw,relatime - debugfs none rw . lxc-start 1383145786.579 INFO lxc_conf - now p is . /sys/kernel/debug. lxc-start 1383145786.579 INFO lxc_conf - looking at .25 15 0:10 / /sys/kernel/security rw,relatime - securityfs none rw . lxc-start 1383145786.579 INFO lxc_conf - now p is . /sys/kernel/security. lxc-start 1383145786.579 INFO lxc_conf - looking at .26 19 0:18 / /run/lock rw,nosuid,nodev,noexec,relatime - tmpfs none rw,size=5120k . lxc-start 1383145786.579 INFO lxc_conf - now p is . /run/lock. lxc-start 1383145786.579 INFO lxc_conf - looking at .27 19 0:19 / /run/shm rw,nosuid,nodev,relatime - tmpfs none rw . lxc-start 1383145786.579 INFO lxc_conf - now p is . /run/shm. lxc-start 1383145786.579 INFO lxc_conf - looking at .28 22 0:20 / /sys/fs/cgroup/cpuset rw,relatime - cgroup cgroup rw,cpuset,clone_children . lxc-start 1383145786.579 INFO lxc_conf - now p is . /sys/fs/cgroup/cpuset. lxc-start 1383145786.579 INFO lxc_conf - looking at .29 19 0:21 / /run/user rw,nosuid,nodev,noexec,relatime - tmpfs none rw,size=102400k,mode=755 . lxc-start 1383145786.579 INFO lxc_conf - now p is . /run/user. lxc-start 1383145786.579 INFO lxc_conf - looking at .30 15 0:22 / /sys/fs/pstore rw,relatime - pstore none rw . lxc-start 1383145786.579 INFO lxc_conf - now p is . /sys/fs/pstore. lxc-start 1383145786.579 INFO lxc_conf - looking at .31 22 0:23 / /sys/fs/cgroup/cpu rw,relatime - cgroup cgroup rw,cpu . lxc-start 1383145786.579 INFO lxc_conf - now p is . /sys/fs/cgroup/cpu. lxc-start 1383145786.579 INFO lxc_conf - looking at .32 22 0:24 / /sys/fs/cgroup/cpuacct rw,relatime - cgroup cgroup rw,cpuacct . lxc-start 1383145786.579 INFO lxc_conf - now p is . /sys/fs/cgroup/cpuacct. lxc-start 1383145786.579 INFO lxc_conf - looking at .33 22 0:25 / /sys/fs/cgroup/memory rw,relatime - cgroup cgroup rw,memory . lxc-start 1383145786.579 INFO lxc_conf - now p is . /sys/fs/cgroup/memory. lxc-start 1383145786.579 INFO lxc_conf - looking at .34 22 0:26 / /sys/fs/cgroup/devices rw,relatime - cgroup cgroup rw,devices . lxc-start 1383145786.579 INFO lxc_conf - now p is . /sys/fs/cgroup/devices. lxc-start 1383145786.579 INFO lxc_conf - looking at .35 22 0:27 / /sys/fs/cgroup/freezer rw,relatime - cgroup cgroup rw,freezer . lxc-start 1383145786.579 INFO lxc_conf - now p is . /sys/fs/cgroup/freezer. lxc-start 1383145786.579 INFO lxc_conf - looking at .36 22 0:28 / /sys/fs/cgroup/blkio rw,relatime - cgroup cgroup rw,blkio . lxc-start 1383145786.579 INFO lxc_conf - now p is . /sys/fs/cgroup/blkio. lxc-start 1383145786.579 INFO lxc_conf - looking at .37 22 0:29 / /sys/fs/cgroup/perf_event rw,relatime - cgroup cgroup rw,perf_event . lxc-start 1383145786.579 INFO lxc_conf - now p is . /sys/fs/cgroup/perf_event. lxc-start 1383145786.579 INFO lxc_conf - looking at .38 22 0:30 / /sys/fs/cgroup/hugetlb rw,relatime - cgroup cgroup rw,hugetlb . lxc-start 1383145786.579 INFO lxc_conf - now p is . /sys/fs/cgroup/hugetlb. lxc-start 1383145786.579 INFO lxc_conf - looking at .39 20 9:2 / /data rw,relatime - ext4 /dev/md2 rw,errors=remount-ro,data=ordered . lxc-start 1383145786.579 INFO lxc_conf - now p is . /data. lxc-start 1383145786.579 INFO lxc_conf - looking at .40 20 8:1 / /boot rw,relatime - ext2 /dev/sda1 rw,errors=continue . lxc-start 1383145786.579 INFO lxc_conf - now p is . /boot. lxc-start 1383145786.579 INFO lxc_conf - looking at .41 22 0:31 / /sys/fs/cgroup/systemd rw,nosuid,nodev,noexec,relatime - cgroup systemd rw,name=systemd . lxc-start 1383145786.579 INFO lxc_conf - now p is . /sys/fs/cgroup/systemd. lxc-start 1383145786.579 NOTICE lxc_start - '/sbin/init' started with pid '6249' lxc-start 1383145786.579 WARN lxc_start - invalid pid for SIGCHLD <4>init: ureadahead main process (7) terminated with status 5 <4>init: console-font main process (94) terminated with status 1 And it will just sit there like that for hours at least. The container becomes pingable but I can't ssh and if I try lxc-console -n as1 I get a blank screen. If I do lxc-stop -n as1 or ^C in the window where it has hung I get: ^CTERM environment variable not set. <4>init: plymouth-upstart-bridge main process (192) terminated with status 1 <4>init: hwclock-save main process (187) terminated with status 70 * Asking all remaining processes to terminate... ...done. * All processes ended within 1 seconds... ...done. * Deactivating swap... ...fail! mount: cannot mount block device /dev/md2 read-only * Will now restart But after 20 minutes it hasn't restarted. Any ideas why these containers are hanging?

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  • CodePlex Daily Summary for Tuesday, December 14, 2010

    CodePlex Daily Summary for Tuesday, December 14, 2010Popular ReleasesFlickrNet API Library: 3.1.4000: Newest release. Now contains dedicated Windows Phone 7 DLL as well as all previous DLLs. Also contains Windows Help file documentation now as standard.mojoPortal: 2.3.5.8: see release notes on mojoportal.com http://www.mojoportal.com/mojoportal-2358-released.aspx Note that we have separate deployment packages for .NET 3.5 and .NET 4.0 The deployment package downloads on this page are pre-compiled and ready for production deployment, they contain no C# source code. To download the source code see the Source Code Tab I recommend getting the latest source code using TortoiseHG, you can get the source code corresponding to this release here.Microsoft All-In-One Code Framework: Visual Studio 2010 Code Samples 2010-12-13: Code samples for Visual Studio 2010SuperWebSocket: SuperWebSocket Drop 2: Changes: based on SuperSocket 1.3 supported sub protocol supported SSL/TLS encryption (wss) in Sync socket mode fixed some data communication bugsSSH.NET Library: 2010.12.13: Fixes SFTP issue when you try to uploaded or download multiple files simultaneously. Usage example can be found hereRequest Tracker Data Access: 1.0.0.0: First releaseSQL Monitor: SQL Monitor 2.4: 1. auto adjust datagrids in query 2. disable activities related commands until activities tab is active.SuperSocket, an extensible socket application framework: SuperSocket 1.3 beta 1: SuperSocket 1.3 is built on .NET 4.0 framework. Bug fixes: fixed a potential bug that the running state hadn't been updated after socket server stopped fixed a synchronization issue when clearing timeout session fixed a bug in ArraySegmentList fixed a bug on getting configuration value Third-part library upgrades: upgraded SuperSocket to .NET 4.0 upgraded EntLib 4.1 to 5.0 New features: supported UDP socket support custom protocol (can support binary protocol and other complecate...Wii Backup Fusion: Wii Backup Fusion 0.9 Beta: - Aqua or brushed metal style for Mac OS X - Shows selection count beside ID - Game list selection mode via settings - Compare Files <-> WBFS game lists - Verify game images/DVD/WBFS - WIT command line for log (via settings) - Cancel possibility for loading games process - Progress infos while loading games - Localization for dates - UTF-8 support - Shortcuts added - View game infos in browser - Transfer infos for log - All transfer routines rewritten - Extract image from image/WBFS - Support....NETTER Code Starter Pack: v1.0.beta: '.NETTER Code Starter Pack ' contains a gallery of Visual Studio 2010 solutions leveraging latest and new technologies and frameworks based on Microsoft .NET Framework. Each Visual Studio solution included here is focused to provide a very simple starting point for cutting edge development technologies and framework, using well known Northwind database (for database driven scenarios). The current release of this project includes starter samples for the following technologies: ASP.NET Dynamic...NuGet (formerly NuPack): NuGet 1.0 Release Candidate: NuGet is a free, open source developer focused package management system for the .NET platform intent on simplifying the process of incorporating third party libraries into a .NET application during development. This release is a Visual Studio 2010 extension and contains the the Package Manager Console and the Add Package Dialog. This new build targets the newer feed (http://go.microsoft.com/fwlink/?LinkID=206669) and package format. See http://nupack.codeplex.com/documentation?title=Nuspe...Free Silverlight & WPF Chart Control - Visifire: Visifire Silverlight, WPF Charts v3.6.5 Released: Hi, Today we are releasing final version of Visifire, v3.6.5 with the following new feature: * New property AutoFitToPlotArea has been introduced in DataSeries. AutoFitToPlotArea will bring bubbles inside the PlotArea in order to avoid clipping of bubbles in bubble chart. You can visit Visifire documentation to know more. http://www.visifire.com/visifirechartsdocumentation.php Also this release includes few bug fixes: * Chart threw exception while adding new Axis in Chart using Vi...PHPExcel: PHPExcel 1.7.5 Production: DonationsDonate via PayPal via PayPal. If you want to, we can also add your name / company on our Donation Acknowledgements page. PEAR channelWe now also have a full PEAR channel! Here's how to use it: New installation: pear channel-discover pear.pearplex.net pear install pearplex/PHPExcel Or if you've already installed PHPExcel before: pear upgrade pearplex/PHPExcel The official page can be found at http://pearplex.net. Want to contribute?Please refer the Contribute page.SwapWin: SwapWin 0.2: Updates: Bring all windows that are swapped to foreground. Make the window sent to primary screen active.??????????: All-In-One Code Framework ??? 2010-12-10: ?????All-In-One Code Framework(??) 2010?12??????!!http://i3.codeplex.com/Project/Download/FileDownload.aspx?ProjectName=1code&DownloadId=128165 ?????release?,???????ASP.NET, WinForm, Silverlight????12?Sample Code。???,??????????sample code。 ?????:http://blog.csdn.net/sjb5201/archive/2010/12/13/6072675.aspx ??,??????MSDN????????????。 http://social.msdn.microsoft.com/Forums/zh-CN/codezhchs/threads ?????????????????,??Email ????UOB & ME: UOB_ME 2.5: latest versionAutoLoL: AutoLoL v1.4.3: AutoLoL now supports importing the build pages from Mobafire.com as well! Just insert the url to the build and voila. (For example: http://www.mobafire.com/league-of-legends/build/unforgivens-guide-how-to-build-a-successful-mordekaiser-24061) Stable release of AutoChat (It is still recommended to use with caution and to read the documentation) It is now possible to associate *.lolm files with AutoLoL to quickly open them The selected spells are now displayed in the masteries tab for qu...SubtitleTools: SubtitleTools 1.2: - Added auto insertion of RLE (RIGHT-TO-LEFT EMBEDDING) Unicode character for the RTL languages. - Fixed delete rows issue.PHP Manager for IIS: PHP Manager 1.1 for IIS 7: This is a final stable release of PHP Manager 1.1 for IIS 7. This is a minor incremental release that contains all the functionality available in 53121 plus additional features listed below: Improved detection logic for existing PHP installations. Now PHP Manager detects the location to php.ini file in accordance to the PHP specifications Configuring date.timezone. PHP Manager can automatically set the date.timezone directive which is required to be set starting from PHP 5.3 Ability to ...Algorithmia: Algorithmia 1.1: Algorithmia v1.1, released on December 8th, 2010.New ProjectsAugmented Reality system in Soccer video: Augmented reality system and camera calibration system in soccer videos based on homography and vanishing points. Code generated with Visual C++ (best compiler is .net)Database Schema Provider: Database Schema Provider gets a database schema in unified format independent on the type of database. It uses ADO.NET data provider for Entity Framework. Dicke Bertha: Many many cool features... DNN Bookmark: DNN Bookmarks is a DNN module that aggregates the most popular social bookmarking tools and also allows you to bookmark your DNN web siteDough: Dough is a UI starter kit built using ASP.Net MVC and ExtJS. It's name comes from the concept of Amish friendship bread, a type of bread or cake made from a sourdough starter that is often shared in a manner similar to a chain letter.Garra - Gerenciador Financeiro: Garra é um sistema completo de controle financeiro: contas a pagar, contas a receber, investimentos, etc...ghcwp7: ghcwp7Hackathon - DotNetNuke Razor User Locator: The DotNetNuke Razor User Locator module demonstrates how Razor can be used to author DNN modules. This module shows where recent users to a web site came from based on their IP address. Hackathon. DotNetNuke Razor. Flickr Badge: Flickr badge desktop module allows you to display image thumbnails from Flickr and preview them inside DotNetNuke or on Flickr (controlled by module settings). Image thumbnails can be loaded by tag, user id, user group id, user set id and more.Hackathon: Razor Youtube Gallery: This is a DotNetNuke module which allows a website admin to add several relevant Youtube videos to a pane. The end user watches the selected Youtube video play, while scrolling through thumbnails of other videos to play those without refreshing the page. jQuery UI MVC3 Demo: Demo and possibly a skeleton for using jQuery UI in MVC3 (currently RC2).Microsoft Office Communicator History manager: Needs to save conversation history just on the local workstation (folder) then application could redstore it and show in simple window (mode) or user could open folder and lock on it manuallyMSTest Extensions - Msbuild: This project contains various msbuild tasks that extend helps with test execution using Mcrosoft testing frameworkRayCharlesTracer: this is a scholar project for a raytracer.Refunctor: F# interactive inside Reflector.Request Tracker Data Access: Best Practical RT (Request Tracker) data access .NET library for REST interface.SurfzApp: An application that does data mining on web resources of interest for Swedish windsurfers...Tesseract Solutions Corp. Data Access Base: Tesseract Data Access speeds up data access in .Net projects. Developed in C# .Net 4. It is a C#, class based ORM.TimBazinga EVoting: Undergrad project - designing an e-voting software system.Tiny Library CQRS: Tiny Library CQRS is a small demonstration project which demonstrates the concept of Domain Driven Design and the CQRS architecture pattern. This project relies on the Apworks DDD framework.Toptoys: toptoysWebGroup: WebGroup makes it easier for your website members to comunicate online. It work like Web IM + Forum + Twitter. It can be easily used in your current project. Developed in C#.WpfCustomChromeLibrary: WpfCustomChromeLibrary makes it easier to create WPF applications with custom chrome and caption buttons (min/max/close). You'll no longer have to do all the dirty work yourself in each application where you want a custom chrome. It's developed in XAML and C#.

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  • Improving WIF&rsquo;s Claims-based Authorization - Part 2

    - by Your DisplayName here!
    In the last post I showed you how to take control over the invocation of ClaimsAuthorizationManager. Then you have complete freedom over the claim types, the amount of claims and the values. In addition I added two attributes that invoke the authorization manager using an “application claim type”. This way it is very easy to distinguish between authorization calls that originate from WIF’s per-request authorization and the ones from “within” you application. The attribute comes in two flavours: a CAS attribute (invoked by the CLR) and an ASP.NET MVC attribute (for MVC controllers, invoke by the MVC plumbing). Both also feature static methods to easily call them using the application claim types. The CAS attribute is part of Thinktecture.IdentityModel on Codeplex (or via NuGet: Install-Package Thinktecture.IdentityModel). If you really want to see that code ;) There is also a sample included in the Codeplex donwload. The MVC attribute is currently used in Thinktecture.IdentityServer – and I don’t currently plan to make it part of the library project since I don’t want to add a dependency on MVC for now. You can find the code below – and I will write about its usage in a follow-up post. public class ClaimsAuthorize : AuthorizeAttribute {     private string _resource;     private string _action;     private string[] _additionalResources;     /// <summary>     /// Default action claim type.     /// </summary>     public const string ActionType = "http://application/claims/authorization/action";     /// <summary>     /// Default resource claim type     /// </summary>     public const string ResourceType = "http://application/claims/authorization/resource";     /// <summary>     /// Additional resource claim type     /// </summary>     public const string AdditionalResourceType = "http://application/claims/authorization/additionalresource"          public ClaimsAuthorize(string action, string resource, params string[] additionalResources)     {         _action = action;         _resource = resource;         _additionalResources = additionalResources;     }     public static bool CheckAccess(       string action, string resource, params string[] additionalResources)     {         return CheckAccess(             Thread.CurrentPrincipal as IClaimsPrincipal,             action,             resource,             additionalResources);     }     public static bool CheckAccess(       IClaimsPrincipal principal, string action, string resource, params string[] additionalResources)     {         var context = CreateAuthorizationContext(             principal,             action,             resource,             additionalResources);         return ClaimsAuthorization.CheckAccess(context);     }     protected override bool AuthorizeCore(HttpContextBase httpContext)     {         return CheckAccess(_action, _resource, _additionalResources);     }     private static WIF.AuthorizationContext CreateAuthorizationContext(       IClaimsPrincipal principal, string action, string resource, params string[] additionalResources)     {         var actionClaims = new Collection<Claim>         {             new Claim(ActionType, action)         };         var resourceClaims = new Collection<Claim>         {             new Claim(ResourceType, resource)         };         if (additionalResources != null && additionalResources.Length > 0)         {             additionalResources.ToList().ForEach(ar => resourceClaims.Add(               new Claim(AdditionalResourceType, ar)));         }         return new WIF.AuthorizationContext(             principal,             resourceClaims,             actionClaims);     } }

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  • top tweets WebLogic Partner Community – October 2012

    - by JuergenKress
    Send your tweets @wlscommunity #WebLogicCommunity and follow us at http://twitter.com/wlscommunity WebLogic Community?@wlscommunity Real World Java EE Patterns by Adam Bien http://wp.me/p1LMIb-mp Markus Eisele?@myfear #JavaOne Content Available for Free https://blogs.oracle.com/java/entry/javaone_content_available_for_free … /via @java Adam Bien?@AdamBien Thought that 1h screencast is way too long to be popular. I was wrong. Lightweight Java EE is doing very well: http://www.adam-bien.com/roller/abien/entry/lightweight_java_ee_screencast … OracleBlogs?@OracleBlogs COLLABORATE 13 Call for Papers http://ow.ly/2szPuZ Oracle WebLogic?@OracleWebLogic New Blog Post: Data Source Security Part 1 http://ow.ly/2szFbv Markus Eisele?@myfear My Three Days at #JavaOne 2012 http://yakovfain.com/2012/10/04/my-three-days-at-javaone-2012/ … < nice writeup ;) Adam Bien?@AdamBien JavaOne 2012 Announcements And Surprises: NetBeans 7.3+ comes with HTML 5, JavaScript, CSS 3 support. JavaScript... http://bit.ly/Uy14eD Andrejus Baranovskis?@andrejusb OOW'12: Oracle ADF Implementations Around the Globe: Best Practices http://fb.me/1IVg6gzU0 gschmutz?@gschmutz Just published a blog with a wrap-up of my presentations at OOW 2012. https://guidoschmutz.wordpress.com/2012/10/07/my-presentations-at-oracle-open-world-2012/ … #oow2012 #trivadis Andrejus Baranovskis?@andrejusb OOW'12: Oracle Business Process Management/Oracle ADF Integration Best Practices http://fb.me/1GY3nz1lb WebLogic Community?@wlscommunity ExaLogic 2.01 ppt & training & Installation check-list & tips & Web tier roadmap http://wp.me/p1LMIb-mh Adam Bien?@AdamBien JavaOne 2012, First Feedback and The Strange Thing: NetBeans day was surprising well attended. A big room was fu... http://bit.ly/PwWwx8 OracleSupport_WLS?@weblogicsupport Free registration for our next webcast on setting up and using a #weblogic #cluster http://pub.vitrue.com/xWV8 WebLogic Community?@wlscommunity UKOUG Application Server & Middleware SIG Meeting http://wp.me/p1LMIb-mC Ronald Luttikhuizen?@rluttikhuizen Discussing future plans for Oracle Middleware Infrastructure Group with @simon_haslam @Jphjulstad and Rene van Wijk #oow @wlscommunity JAX London?@jaxlondon Be part of #JAXLondon- only 11 days to go! Still need a ticket? http://buff.ly/TUPKmL WebLogic Community?@wlscommunity ExaLogic X3-2 launched at OOW 2012 http://wp.me/p1LMIb-mM WebLogic Community?@wlscommunity @OracleEvents Dear Oracle Team thanks for promoting the WebLogic bootcamp, new schedules are online https://blogs.oracle.com/emeapartnerweblogic/resource/weblogic12c.htm … #weblogiccommunity OracleBlogs?@OracleBlogs Partner Webcast Introducing Oracle Business Activity Monitoring - 18 October 2012 http://ow.ly/2svzyz AMIS, Oracle & Java?@AMIS_Services Grant posted a nice little video on youtube about the #ADF EMG activities during Oracle Open World. http://youtu.be/qZhtBqnK-Zc GlassFish?@glassfish ADF Essentials - Available for free and certified on GlassFish!: If you are an Oracle customer, you are probably... http://bit.ly/UCtVwY OracleBlogs?@OracleBlogs WebLogic 12 hands-on bootcamps for partnersnew dates & locations http://ow.ly/2smOfs Pieter Kranenburg?@pskranenburg I'm EXA and I know IT! How about you? Go to http://bit.ly/OnSlDd and find out! (you might win an #iphone5 ;-) #OOW please RT Andrejus Baranovskis?@andrejusb Enabling WebLogic Administrator Group Inside Custom ADF Application http://fb.me/2d5SCeJ2g Michel Schildmeijer?@MNEMONIC01 I'm EXA and I know IT! How about you? Go to http://bit.ly/OnSlDd (you might win an #iphone5 ;-) #oow OracleSupport_WLS?@weblogicsupport Step-by-step instructions on how to configure mail Alerts in #OEM 11g for #WebLogic Servers up/down status http://pub.vitrue.com/KpZq Jeff West?@jeffreyawest Answer: Deliver JMS message to a single node in a Weblogic Cluster with a Distributed Topic http://stackoverflow.com/a/12396492/697114?stw=2 … Java?@java Bucharest Java User Group: Launched and Growing! #JUG http://ow.ly/dDnbN OracleSupport_WLS?@weblogicsupport Don't shoot the messenger! #Java source code analyzer @ http://pub.vitrue.com/Cy2J JAX London?@jaxlondon .@BrianGoetz gives in depth session on the details of how #Lambda expressions are implemented in the #Java language at #JAXLondon" ADF Community DE?@ADFCommunityDE Webcast ADFNewsSession: ADF as a basis of Fusion Apps - the biggest ADF project ever. Sep 14, 8:30 AM CET. Dial in https://blogs.oracle.com/jdevotnharvest/entry/adf_partner_community_news_session … OracleBlogs?@OracleBlogs WebLogic & Coherence & Cloud presentations for customer meetings http://ow.ly/1mqwrC Pieter Kranenburg?@pskranenburg Seminar: Oracle WebLogic 12c at Qualogy. You are invited! http://bit.ly/Ps9LDF Oracle WebLogic?@OracleWebLogic New Blog Post: Oracle OpenWorld Update -- General Session: Oracle Fusion Middleware Strategies Driving Business Inno... http://ow.ly/2stylf Oracle Cloud Zone?@OracleCloudZone New partner programs for Oracle Cloud Solutions http://bit.ly/PrVq5O #cloud #oow Lucas Jellema?@lucasjellema The strategy on Java - JEE, SE, ME, FX: http://technology.amis.nl/2012/10/02/javaone-2012-strategy-and-technical-keynote/ … #javaone #oow_amis WebLogic Community?@wlscommunity Send your #WebLogicCommunity #oow pictures and blog posts @wlscommunity or http://www.facebook.com/weblogiccommunity … Enjoy OOW ;-) WebLogic Community?@wlscommunity Become an WebLogic 12c expert, attend our partner bootcampshttps://blogs.oracle.com/emeapartnerweblogic/resource/weblogic12c.htm … #WebLogicCommunity #opn AMIS, Oracle & Java?@AMIS_Services Volgende #oracle #ADF training bij @AMIS_SERVICES is van 12 tot 16 november. Meer info of aanmelden? http://www.amis.nl/Trainingen/oracle-adf-11g-applicatieontwikkeling/ … Devoxx?@Devoxx ALL the Devoxx 2011 talks are now freely available on Parleys @ http://www.parleys.com/#st=4&id=102998 Pls RT! Adam Bien?@AdamBien Use the coupon code "PLUMA" and you will get 20% off for "Real World Java EE Patterns": http://realworldpatterns.com Lucas Jellema?@lucasjellema Very good summary of the #JavaOne Technical Keynote last night: http://java.dzone.com/articles/javaone-2012-javaone-technical … Arun Gupta?@arungupta Blogged: JavaOne 2012 Keynote and GlassFish Party Pictures: Some pictures from the keynote ... And som... http://bit.ly/ViH0ue Lucas Jellema?@lucasjellema Most recent promoted build for GassFish 4.0 (EE7) has WebSocket support: to play with: http://dlc.sun.com.edgesuite.net/glassfish/4.0/promoted/ … #javaone michael palmeter?@michaelpalmeter If you haven't seen the 5-minute Exalogic demo, you need to (do it now!) - http://lnkd.in/GRqy3x Lonneke Dikmans?@lonnekedikmans VENNSTER BLOG: Running EclipseLink DBWS 2.4.0 on GlassFish 3.1.2 http://blog.vennster.nl/2012/09/running-eclipselink-dbws-240-on.html?spref=tw … WebLogic Community?@wlscommunity WebLogic Partner Community Newsletter September 2012 http://wp.me/p1LMIb-mf WebLogic Community?@wlscommunity again again again&hellip;. it is Oracle Open World 2012 http://wp.me/p1LMIb-m6 Markus Eisele?@myfear #WebLogic and #JavaEE Roadmap and Strategy Session at OOW http://ow.ly/2slZEY /via @OracleWebLogic Adam Bien?@AdamBien An Article About Java EE Connector Architectures 1.6 (JCA 1.6): The free Java Magazine article: Java EE Connect... http://bit.ly/St6sxq Lucas Jellema?@lucasjellema ADF Essentials - free to develop and to deploy (I said: free!) - http://www.oracle.com/technetwork/developer-tools/adf/overview/adfessentials-1719844.html … AMIS, Oracle & Java?@AMIS_Services Blog by Lucas Jellema: "Develop and Deploy ADF applications – free of charge using the new ADF Essentials" http://bit.ly/StAhxY Andrejus Baranovskis?@andrejusb ADF Essentials - Quick Technical Review http://fb.me/2hKCXyF43 OracleBlogs?@OracleBlogs GlassFish Extension for Oracle JDeveloper http://ow.ly/2slIO8 Retweetet von WebLogic Community Oracle Eclipse?@OEPE New Tutorial: Using ADF Faces and ADF Controller with Oracle Enterprise Pack for Eclipse. #OEPE http://pub.vitrue.com/QoUg Simon Haslam?@simon_haslam As of the last day or two there's a new Java Products Media Pack on http://edelivery.oracle.com (rather than it being in FMW pack) WebLogic Community?@wlscommunity top tweets WebLogic Partner Community &ndash; September 2012 http://wp.me/p1LMIb-m2 Adam Bien?@AdamBien I was interviewed by OTN: http://www.oracle.com/technetwork/articles/java/jaxawards-1843595.html …See you at JavaOne! Oracle WebLogic?@OracleWebLogic DevOps Basics for #WebLogic: Track Down High CPU Thread with ps, top and the new JDK7 jcmd tool. Great blog @frankmuz. http://ow.ly/dOBM4 Simon Haslam?@simon_haslam Looking for "oak style"(!) advanced content but you're a middleware specialist? See #ukoug2012 #middlewaresunday http://2012.ukoug.org/default.asp?p=9355 … Julien Ponge ?@jponge Just finished Java EE 6 + AngularJS samples for my upcoming middleware lectures. Code at https://github.com/jponge/todoapp-javaee6-angularjs … and https://github.com/jponge/todoapp-bosswatch … Markus Eisele?@myfear #Oracle #WebLogic is now totally #FREE for #Developer - more than just OTN license to develop the 1st prototype! http://bit.ly/SWltsR Markus Eisele?@myfear #WebSockets on #WebLogic Server http://ow.ly/1mv4QP by @wlsteve < need to give this a testdrive ;) OracleEnterpriseMgr?@oracle_em EM Blog : Oracle Enterprise Manager Cloud Control 12c Release 2 (12.1.0.2) is Available Now ! #em12c http://pub.vitrue.com/mk7o OracleBlogs?@OracleBlogs ADF training material now on the iPad http://ow.ly/1mqz1Q GlassFish?@glassfish GlassFish grows by 50% in Software Stack Market Share Report for August 2012 by @Jelastic http://awe.sm/o4ZAp WebLogic Partner Community For regular information become a member in the WebLogic Partner Community please visit: http://www.oracle.com/partners/goto/wls-emea ( OPN account required). If you need support with your account please contact the Oracle Partner Business Center. Blog Twitter LinkedIn Mix Forum Wiki Technorati Tags: twitter,WebLogic,WebLogic Community,Oracle,OPN,Jürgen Kress

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  • Simple Branching and Merging with SVN

    Its a good idea not to do too much work without checking something into source control.  By too much work I mean typically on the order of a couple of hours at most, and certainly its a good practice to check in anything you have before you leave the office for the day.  But what if your changes break the build (on the build server you do have a build server dont you?) or would cause problems for others on your team if they get the latest code?  The solution with Subversion is branching and merging (incidentally, if youre using Microsoft Visual Studio Team System, you can shelve your changes and share shelvesets with others, which accomplishes many of the same things as branching and merging, but is a bit simpler to do). Getting Started Im going to assume you have Subversion installed along with the nearly ubiquitous client, TortoiseSVN.  See my previous post on installing SVN server if you want to get it set up real quick (you can put it on your workstation/laptop just to learn how it works easily enough). Overview When you know you are going to be working on something that you wont be able to check in quickly, its a good idea to start a branch.  Its also perfectly fine to create the branch after-the-fact (have you ever started something thinking it would be an hour and 4 hours later realized you were nowhere near done?).  In any event, the first thing you need to do is create a branch.  A branch is simply a copy of the current trunk (a typical subversion setup has root directories called trunk, tags, and branches its a good idea to keep this and to put your branches in the branches folder).  Once you have a new branch, you need to switch your working copy so that it is bound to your branch.  As you work,  you may want to merge in changes that are happening in the trunk to your branch, and ultimately when you are done youll want to merge your branch back into the trunk.  When done, you can delete your branch (or not, but it may add clutter).  To sum up: Create a new branch Switch your local working copy to the new branch Develop in the branch (commit changes, etc.) Merge changes from trunk into your branch Merge changes from branch into trunk Delete the branch Create a new branch From the root of your repository, right-click and select TortoiseSVN > Branch/tag as shown at right (click to enlarge).  This will bring up the Copy (Branch / Tag) interface.  By default the From WC at URL: should be pointing at the trunk of your repository.  I recommend (after ensuring that you have the latest version) that you choose to make the copy from the HEAD revision in the repository (the first radio button).  In the To URL: textbox, you should change the URL from /trunk to /branches/NAME_OF_BRANCH.  You can name the branch anything you like, but its often useful to give it your name (if its just for your use) or some useful information (such as a datestamp or a bug/issue ID from that it relates to, or perhaps just the name of the feature you are adding. When youre done with that, enter in a log message for your new branch.  If you want to immediately switch your local working copy to the new branch/tag, check the box at the bottom of the dialog (Switch working copy to new branch/tag).  You can see an example at right. Assuming everything works, you should very quickly see a window telling you the Copy finished, like the one shown below: Switch Local Working Copy to New Branch If you followed the instructions above and checked the box when you created your branch, you dont need to do this step.  However, if you have a branch that already exists and you would like to switch over to working on it, you can do so by using the Switch command.  Youll find it in the explorer context menu under TortoiseSVN > Switch: This brings up a dialog that shows you your current binding, and lets you enter in a new URL to switch to: In the screenshot above, you can see that Im currently bound to a branch, and so I could switch back to the trunk or to another branch.  If youre not sure what to enter here, you can click the [] next to the URL textbox to explore your repository and find the appropriate root URL to use.  Also, the dropdown will show you URLs that might be a good fit (such as the trunk of the current repository). Develop in the Branch Once you have created a branch and switched your working copy to use it,  you can make changes and Commit them as usual.  Your commits are now going into the branch, so they wont impact other users or the build server that are working off of the trunk (or their own branches).  In theory you can keep on doing this forever, but practically its a good idea to periodically merge the trunk into your branch, and/or keep your branches short-lived and merge them back into the trunk before they get too far out of sync. Merge Changes from Trunk into your Branch Once you have been working in a branch for a little while, change to the trunk will have occurred that youll want to merge into your branch.  Its much safer and easier to integrate changes in small increments than to wait for weeks or months and then try to merge in two very different codebases.  To perform the merge, simply go to the root of your branch working copy and right click, select TortoiseSVN->Merge.  Youll be presented with this dialog: In this case you want to leave the default setting, Merge a range of revisions.  Click Next.  Now choose the URL to merge from.  You should select the trunk of your current repository (which should be in the dropdownlist, or you can click the [] to browse your repository for the correct URL).  You can leave everything else blank since you want to merge everything: Click Next.  Again you can leave the default settings.  If you want to do something more granular than everything in the trunk, you can select a different Merge depth, to include merging just one item in the tree.  You can also perform a Test merge to see what changes will take place before you click Merge (which is often a good idea).  Heres what the dialog should look like before you click Merge: After clicking Merge (or Test merge) you should see a confirmation like this (it will say Test Only in the title if you click Test merge): Now you should build your solution, run all of your tests, and verify that your branch still works the way it should, given the updates that youve just integrated from the trunk.  Once everything works, Commit your changes, and then continue with your work on the branch.  Note that until you commit, nothing has actually changed in your branch on the server.  Other team members who may also be working in this branch wont be impacted, etc.  The Merge is purely a client-side operation until you perform a Commit. In a more real-world scenario, you may have conflicts.  When you do, youll be presented with a dialog like this one: Its up to you which option you want to go with.  The more frequently you Merge, the fewer of these youll have to deal with.  Also, be very sure that youre merging the right folders together.  If you try and merge your trunk with some subfolder in your branchs structure, youll end up with all kinds of conflicts and problems.  Fortunately, theyre only on your working copy (unless you commit them!) but if you see something like that, be sure to doublecheck your URL and your local file location. Merge Your Branch Back Into Trunk When youre done working in your branch, its time to pull it back into the trunk.  The first thing you should do is follow the previous steps instructions for merging the latest from the trunk into your branch.  This lets you ensure that what you have in your branch works correctly with the current trunk.  Once youve done that and committed your changes to your branch, youre ready to proceed with this step. Once youre confident your branch is good to go, you should go to its root folder and select TortoiseSVN->Merge (as above) from the explorer right-click menu.  This time, select Reintegrate a branch as shown below: Click Next.  Youll want it to merge with the trunk, which should be the default: Click Next. Leave the default settings: Click Test merge to see a test, and then if all looks good, click Merge.  Note that if you havent checked in your working copy changes, youll see something like this: If on the other hand things are successful: After this step, its likely you are finished working in your branch.  Dont forget to use the ToroiseSVN->Switch command to change your working copy back to the trunk. Delete the Branch You dont have to delete the branch, but over time your branches area of your repository will get cluttered, and in any event if theyre not actively being worked on the branches are just taking up space and adding to later confusion.  Keeping your branches limited to things youre actively working on is simply a good habit to get into, just like making sure your codebase itself remains tidy and not filled with old commented out bits of code. To delete the branch after youre finished with it, the simplest thing to do is choose TortoiseSVN->Repo Browser.  From there, assuming you did this from your branch, it should already be highlighted.  In any event, navigate to your branch in the treeview on the left, and then right-click and select Delete.  Enter a log message if youd like: Click OK, and its gone.  Dont be too afraid of this, though.  You can still get to the files by viewing the log for branches, and selecting a previous revision (anything before the delete action): If for some reason you needed something that was previously in this branch, you could easily get back to any changeset you checked in, so you should have absolutely no fear when it comes to deleting branches youre done with.   Resources If youre using Eclipse, theres a nice write-up of the steps required by Zach Cox that I found helpful here. Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Blend for Visual Studio 2013 Prototyping Applications with SketchFlow

    - by T
    Originally posted on: http://geekswithblogs.net/tburger/archive/2014/08/10/blend-for-visual-studio-2013-prototyping-applications-with-sketchflow.aspxSketchFlow enables rapid creating of dynamic interface mockups very quickly. The SketchFlow workspace is the same as the standard Blend workspace with the inclusion of three panels: the SketchFlow Feedback panel, the SketchFlow Animation panel and the SketchFlow Map panel. By using SketchFlow to prototype, you can get feedback early in the process. It helps to surface possible issues, lower development iterations, and increase stakeholder buy in. SketchFlow prototypes not only provide an initial look but also provide a way to add additional ideas and input and make sure the team is on track prior to investing in complete development. When you have completed the prototyping, you can discard the prototype and just use the lessons learned to design the application from or extract individual elements from your prototype and include them in the application. I don’t recommend trying to transition the entire project into a development project. Objects that you add with the SketchFlow style have a hand-sketched look. The sketch style is used to remind stakeholders that this is a prototype. This encourages them to focus on the flow and functionality without getting distracted by design details. The sketchflow assets are under sketchflow in the asset panel and are identifiable by the postfix “–Sketch”. For example “Button-Sketch”. You can mix sketch and standard controls in your interface, if required. Be creative, if there is a missing control or your interface has a different look and feel than the out of the box one, reuse other sketch controls to mimic the functionality or look and feel. Only use standard controls if it doesn’t distract from the idea that this is a prototype and not a standard application. The SketchFlow Map panel provides information about the structure of your application. To create a new screen in your prototype: Right-click the map surface and choose “Create a Connected Screen”. Name the screens with names that are meaningful to the stakeholders. The start screen is the one that has the green arrow. To change the start screen, right click on any other screen and set to start screen. Only one screen can be the start screen at a time. Rounded screen are component screens to mimic reusable custom controls that will be built into the final application. You can change the colors of all of the boxes and should use colors to create functional groupings. The groupings can be identified in the SketchFlow Project Settings. To add connections between screens in the SketchFlow Map panel. Move the mouse over a screen in the SketchFlow and a menu will appear at the bottom of the screen node. In the menu, click Connect to an existing screen. Drag the arrow to another screen on the Map. You add navigation to your prototype by adding connections on the SketchFlow map or by adding navigation directly to items on your interface. To add navigation from objects on the artboard, right click the item then from the menu, choose “Navigate to”. This will expose a sub-menu with available screens, backward, or forward. When the map has connected screens, the SketchFlow Player displays the connected screens on the Navigate sidebar. All screens show in the SketchFlow Player Map. To see the SketchFlow Player, run your SketchFlow prototype. The Navigation sidebar is meant to show the desired user work flow. The map can be used to view the different screens regardless of suggested navigation in the navigation bar. The map is able to be hidden and shown. As mentioned, a component screen is a shared screen that is used in more than one screen and generally represents what will be a custom object in the application. To create a component screen, you can create a screen, right click on it in the SketchFlow Map and choose “Make into component screen”. You can mouse over a screen and from the menu that appears underneath, choose create and insert component screen. To use an existing screen, select if from the Asset panel under SketchFlow, Components. You can use Storyboards and Visual State animations in your SketchFlow project. However, SketchFlow also offers its own animation technique that is simpler and better suited for prototyping. The SketchFlow Animation panel is above your artboard by default. In SketchFlow animation, you create frames and then position the elements on your interface for each frame. You then specify elapsed time and any effects you want to apply to the transition. The + at the top is what creates new frames. Once you have a new Frame, select it and change the property you want to animate. In the example above, I changed the Text of the result box. You can adjust the time between frames in the lower area between the frames. The easing and effects functions are changed in the center between each frame. You edit the hold time for frames by clicking the clock icon in the lower left and the hold time will appear on each frame and can be edited. The FluidLayout icon (also located in the lower left) will create smooth transitions. Next to the FluidLayout icon is the name of that Animation. You can rename the animation by clicking on it and editing the name. The down arrow chevrons next to the name allow you to view the list of all animations in this prototype and select them for editing. To add the animation to the interface object (such as a button to start the animation), select the PlaySketchFlowAnimationAction from the SketchFlow behaviors in the Assets menu and drag it to an object on your interface. With the PlaySketchFlowAnimationAction that you just added selected in the Objects and Timeline, edit the properties to change the EventName to the event you want and choose the SketchFlowAnimation you want from the drop down list. You may want to add additional information to your screens that isn’t really part of the prototype but is relevant information or a request for clarification or feedback from the reviewer. You do this with annotations or notes. Both appear on the user interface, however, annotations can be switched on or off at design and review time. Notes cannot be switched off. To add an Annotation, chose the Create Annotation from the Tools menu. The annotation appears on the UI where you will add the notes. To display or Hide annotations, click the annotation toggle at the bottom right on the artboard . After to toggle annotations on, the identifier of the person who created them appears on the artboard and you must click that to expand the notes. To add a note to the artboard, simply select the Note-Sketch from Assets ->SketchFlow ->Styles ->Sketch Styles. Drag and drop it to the artboard and place where you want it. When you are ready for users to review the prototype, you have a few options available. Click File -> Export and choose one of the options from the list: Publish to Sharepoint, Package SketchFlowProject, Export to Microsoft Word, or Export as Images. I suggest you play with as many of the options as you can to see what they do. Both the Sharepoint and Packaged SketchFlowProject allow you to collect feedback from one or more users that you can import into the project. The user can make notes on the UI and in the Feedback area in the bottom left corner of the player. When the user is done adding feedback, it is exported from the right most folder icon in the My Feedback panel. Feeback is imported on a panel named SketchFlow Feedback. To get that panel to show up, select Window -> SketchFlow Feedback. Once you have the panel showing, click the + in the upper right of the panel and find the notes you exported. When imported, they will show up in a list and on the artboard. To document your prototype, use the Export to Microsoft Word option from the File menu. That should get you started with prototyping.

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  • CodePlex Daily Summary for Sunday, February 20, 2011

    CodePlex Daily Summary for Sunday, February 20, 2011Popular ReleasesView Layout Replicator for Microsoft Dynamics CRM 2011: View Layout Replicator (1.0.119.18): Initial releaseWindows Phone 7 Isolated Storage Explorer: WP7 Isolated Storage Explorer v1.0 Beta: Current release features:WPF desktop explorer client Visual Studio integrated tool window explorer client (Visual Studio 2010 Professional and above) Supported operations: Refresh (isolated storage information), Add Folder, Add Existing Item, Download File, Delete Folder, Delete File Explorer supports operations running on multiple remote applications at the same time Explorer detects application disconnect (1-2 second delay) Explorer confirms operation completed status Explorer d...Advanced Explorer for Wp7: Advanced Explorer for Wp7 Version 1.4 Test8: Added option to run under Lockscreen. Fixed a bug when you open a pdf/mobi file without starting adobe reader/amazon kindle first boost loading time for folders added \Windows directory (all devices) you can now interact with the filesystem while it is loading!Game Files Open - Map Editor: Game Files Open - Map Editor Beta 2 v1.0.0.0: The 2° beta release of the Map Editor, we have fixed a big bug of the files regen.Document.Editor: 2011.6: Whats new for Document.Editor 2011.6: New Left to Right and Left to Right support New Indent more/less support Improved Home tab Improved Tooltips/shortcut keys Minor Bug Fix's, improvements and speed upsCatel - WPF and Silverlight MVVM library: 1.2: Catel history ============= (+) Added (*) Changed (-) Removed (x) Error / bug (fix) For more information about issues or new feature requests, please visit: http://catel.codeplex.com =========== Version 1.2 =========== Release date: ============= 2011/02/17 Added/fixed: ============ (+) DataObjectBase now supports Isolated Storage out of the box: Person.Save(myStream) stores a whole object graph in Silverlight (+) DataObjectBase can now be converted to Json via Person.ToJson(); (+)...??????????: All-In-One Code Framework ??? 2011-02-18: ?????All-In-One Code Framework?2011??????????!!http://i3.codeplex.com/Project/Download/FileDownload.aspx?ProjectName=1code&DownloadId=128165 ?????,?????AzureBingMaps??????,??Azure,WCF, Silverlight, Window Phone????????,????????????????????????。 ???: Windows Azure SQL Azure Windows Azure AppFabric Windows Live Messenger Connect Bing Maps ?????: ??????HTML??? ??Windows PC?Mac?Silverlight??? ??Windows Phone?Silverlight??? ?????:http://blog.csdn.net/sjb5201/archive/2011...Image.Viewer: 2011: First version of 2011Silverlight Toolkit: Silverlight for Windows Phone Toolkit - Feb 2011: Silverlight for Windows Phone Toolkit OverviewSilverlight for Windows Phone Toolkit offers developers additional controls for Windows Phone application development, designed to match the rich user experience of the Windows Phone 7. Suggestions? Features? Questions? Ask questions in the Create.msdn.com forum. Add bugs or feature requests to the Issue Tracker. Help us shape the Silverlight Toolkit with your feedback! Please clearly indicate that the work items and issues are for the phone t...VsTortoise - a TortoiseSVN add-in for Microsoft Visual Studio: VsTortoise Build 29 Beta: Note: This release does not work with custom VsTortoise toolbars. These get removed every time when you shutdown Visual Studio. (#7940) Build 29 (beta)New: Added VsTortoise Solution Explorer integration for Web Project Folder, Web Folder and Web Item. Fix: TortoiseProc was called with invalid parameters, when using TSVN 1.4.x or older #7338 (thanks psifive) Fix: Add-in does not work, when "TortoiseSVN/bin" is not added to PATH environment variable #7357 Fix: Missing error message when ...Sense/Net CMS - Enterprise Content Management: SenseNet 6.0.3 Community Edition: Sense/Net 6.0.3 Community Edition We are happy to introduce you the latest version of Sense/Net with integrated ECM Workflow capabilities! In the past weeks we have been working hard to migrate the product to .Net 4 and include a workflow framework in Sense/Net built upon Windows Workflow Foundation 4. This brand new feature enables developers to define and develop workflows, and supports users when building and setting up complicated business processes involving content creation and response...thinktecture WSCF.blue: WSCF.blue V1 Update (1.0.11): Features Added a new option that allows properties on data contract types to be marked as virtual. Bug Fixes Fixed a bug caused by certain project properties not being available on Web Service Software Factory projects. Fixed a bug that could result in the WrapperName value of the MessageContractAttribute being incorrect when the Adjust Casing option is used. The menu item code now caters for CommandBar instances that are not available. For example the Web Item CommandBar does not exist ...Terminals: Version 2 - RC1: The "Clean Install" will overwrite your log4net configuration (if you have one). If you run in a Portable Environment, you can use the "Clean Install" and target your portable folder. Tested and it works fine. Changes for this release: Re-worked on the Toolstip settings are done, just to avoid the vs.net clash with auto-generating files for .settings files. renamed it to .settings.config Packged both log4net and ToolStripSettings files into the installer Upgraded the version inform...SQL Server Process Info Log: Release: releaseAllNewsManager.NET: AllNewsManager.NET 1.3: AllNewsManager.NET 1.3. This new version provide several new features, improvements and bug fixes. Some new features: Online Users. Avatars. Copy function (to create a new article from another one). SEO improvements (friendly urls). New admin buttons. And more...Facebook Graph Toolkit: Facebook Graph Toolkit 0.8: Version 0.8 (15 Feb 2011)moved to Beta stage publish photo feature "email" field of User object added new Graph Api object: Group, Event new Graph Api connection: likes, groups, eventsDJME - The jQuery extensions for ASP.NET MVC: DJME2 -The jQuery extensions for ASP.NET MVC beta2: The source code and runtime library for DJME2. For more product info you can goto http://www.dotnetage.com/djme.html What is new ?The Grid extension added The ModelBinder added which helping you create Bindable data Action. The DnaFor() control factory added that enabled Model bindable extensions. Enhance the ListBox , ComboBox data binding.Jint - Javascript Interpreter for .NET: Jint - 0.9.0: New CLR interoperability features Many bugfixesBuild Version Increment Add-In Visual Studio: Build Version Increment v2.4.11046.2045: v2.4.11046.2045 Fixes and/or Improvements:Major: Added complete support for VC projects including .vcxproj & .vcproj. All padding issues fixed. A project's assembly versions are only changed if the project has been modified. Minor Order of versioning style values is now according to their respective positions in the attributes i.e. Major, Minor, Build, Revision. Fixed issue with global variable storage with some projects. Fixed issue where if a project item's file does not exist, a ...Coding4Fun Tools: Coding4Fun.Phone.Toolkit v1.1: Coding4Fun.Phone.Toolkit v1.1 release. Bug fixes and minor feature requests addedNew Projects.NET Core Audio APIs: This project provides a lightweight set of .NET wrappers around each section of the Windows Core Audio APIs.Akwen: Akwen aspirantbigserve: made in load sof languages a serve ralternative to iis and apacheCathedral game framework: (Will eventually be) A framework for creating 2d region-based games in Silverlight.Gmail Like File Uploader In .NET: Many times I wounder, How does gmail uploads files and monitor the upload status. I suppose many of you also have gone through the same experience. Most of you knows that the Choose File button on the Gmail Page is actually a flash button but how about the progressbar? AJAX rightinicomInterface: ????ini???????COM??iOnlineExamCenter - Trung Tâm Thi Tr?c Tuy?n: Tìm hi?u các phuong pháp thi tr?c nghi?m . Áp d?ng xây d?ng trung tâm thi tr?c tuy?n. ?ng d?ng du?c xây d?ng d?a trên n?n t?ng - .NET Framework v4.0 - ASP.NET MVC v3 - Entity Framework v4 - Silverlight v4 - jQueryLee Utility Library: Lee Utility LibrarySocialCore: Social Core is a framework for developing Social applications using a distributed infrastructure. The focus of Social Core is on collaboration, security and transparency. Privacy is not dead, it just is not implemented correctly.TestAmazonCloud: tacTftp.Net: This projects implements the TFTP (Trivial File Transfer) protocol for .NET in an easy-to-use library. It allows you to integrate TFTP client and server functionality into your project. It is s table, unit-tested and comes with a sample TFTP client and server.Using the Repository Pattern and DI to switch between SQL and XML: This is an example application, showing how Dependency Injection and the Repository can be used to allow interchangeable persistence between XML and SQLWebForms Razor converter - WinForms: Telerik developed a command line "WebForms to Razor (CSHTML) conversion tool" and uploaded in git -https://github.com/telerik/razor-converter This project uses the same Telerik API, but the client is the GUI/WinForms and allow developer to convert multiple files in a one go.XNA and Dependency Injection: Test code sample for XNA and Dependency Injection.XNA and IoC Container: Test code sample for XNA and IoC Container.XNA and Unit Testing: Test code sample for XNA and Unit Testing.Xplore World: Xplore World es un navegador web avanzado disponible para Windows Xp/Vista/7 y actualmente solo está disponible en español. Con este navegador puedes hacer cosas maravillosas como ver imágenes de cualquier web a tu estilo, administrar los usuarios, modificar tus marcadores, etc.ZO (ZeroOne): ZeroOne is the editor for programmers who think in binary.

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  • 202 blog articles

    - by mprove
    All my blog articles under blogs.oracle.com since August 2005: 202 blog articles Apr 2012 blogs.oracle.com design patch Mar 2012 Interaction 12 - Critique Mar 2012 Typing. Clicking. Dancing. Feb 2012 Desktop Mobility in Hospitals with Oracle VDI /video Feb 2012 Interaction 12 in Dublin - Highlights of Day 3 Feb 2012 Interaction 12 in Dublin - Highlights of Day 2 Feb 2012 Interaction 12 in Dublin - Highlights of Day 1 Feb 2012 Shit Interaction Designers Say Feb 2012 Tips'n'Tricks for WebCenter #3: How to display custom page titles in Spaces Jan 2012 Tips'n'Tricks for WebCenter #2: How to create an Admin menu in Spaces and save a lot of time Jan 2012 Tips'n'Tricks for WebCenter #1: How to apply custom resources in Spaces Jan 2012 Merry XMas and a Happy 2012! Dec 2011 One Year Oracle SocialChat - The Movie Nov 2011 Frank Ludolph's Last Working Day Nov 2011 Hans Rosling at TED Oct 2011 200 Countries x 200 Years Oct 2011 Blog Aggregation for Desktop Virtualization Oct 2011 Oracle VDI at OOW 2011 Sep 2011 Design for Conversations & Conversations for Design Sep 2011 All Oracle UX Blogs Aug 2011 Farewell Loriot Aug 2011 Oracle VDI 3.3 Overview Aug 2011 Sutherland's Closing Remarks at HyperKult Aug 2011 Surface and Subface Aug 2011 Back to Childhood in UI Design Jul 2011 The Art of Engineering and The Engineering of Art Jul 2011 Oracle VDI Seminar - June-30 Jun 2011 SGD White Paper May 2011 TEDxHamburg Live Feed May 2011 Oracle VDI in 3 Minutes May 2011 Space Ship Earth 2011 May 2011 blog moving times Apr 2011 Frozen tag cloud Apr 2011 Oracle: Hardware Software Complete in 1953 Apr 2011 Interaction Design with Wireframes Apr 2011 A guide to closing down a project Feb 2011 Oracle VDI 3.2.2 Jan 2011 free VDI charts Jan 2011 Sun Founders Panel 2006 Dec 2010 Sutherland on Leadership Dec 2010 SocialChat: Efficiency of E20 Dec 2010 ALWAYS ON Desktop Virtualization Nov 2010 12,000 Desktops at JavaOne Nov 2010 SocialChat on Sharing Best Practices Oct 2010 Globe of Visitors Oct 2010 SocialChat about the Next Big Thing Oct 2010 Oracle VDI UX Story - Wireframes Oct 2010 What's a PC anyway? Oct 2010 SocialChat on Getting Things Done Oct 2010 SocialChat on Infoglut Oct 2010 IT Twenty Twenty Oct 2010 Desktop Virtualization Webcasts from OOW Oct 2010 Oracle VDI 3.2 Overview Sep 2010 Blog Usability Top 7 Sep 2010 100 and counting Aug 2010 Oracle'izing the VDI Blogs Aug 2010 SocialChat on Apple Aug 2010 SocialChat on Video Conferencing Aug 2010 Oracle VDI 3.2 - Features and Screenshots Aug 2010 SocialChat: Don't stop making waves Aug 2010 SocialChat: Giving Back to the Community Aug 2010 SocialChat on Learning in Meetings Aug 2010 iPAD's Natural User Interface Jul 2010 Last day for Sun Microsystems GmbH Jun 2010 SirValUse Celebration Snippets Jun 2010 10 years SirValUse - Happy Birthday! Jun 2010 Wim on Virtualization May 2010 New Home for Oracle VDI Apr 2010 Renaissance Slide Sorter Comments Apr 2010 Unboxing Sun Ray 3 Plus Apr 2010 Desktop Virtualisierung mit Sun VDI 3.1 Apr 2010 Blog Relaunch Mar 2010 Social Messaging Slides from CeBIT Mar 2010 Social Messaging Talk at CeBIT Feb 2010 Welcome Oracle Jan 2010 My last presentation at Sun Jan 2010 Ivan Sutherland on Leadership Jan 2010 Learning French with Sun VDI Jan 2010 Learning Danish with Sun Ray Jan 2010 VDI workshop in Nieuwegein Jan 2010 Happy New Year 2010 Jan 2010 On Creating Slides Dec 2009 Best VDI Ever Nov 2009 How to store the Big Bang Nov 2009 Social Enterprise Tools. Beipiel Sun. Nov 2009 Nov-19 Nov 2009 PDF and ODF links on your blog Nov 2009 Q&A on VDI and MySQL Cluster Nov 2009 Zürich next week: Swiss Intranet Summit 09 Nov 2009 Designing for a Sustainable World - World Usabiltiy Day, Nov-12 Nov 2009 How to export a desktop from VDI 3 Nov 2009 Virtualisation Roadshow in the UK Nov 2009 Project Wonderland at EDUCAUSE 09 Nov 2009 VDI Roadshow in Dublin, Nov-26, 2009 Nov 2009 Sun VDI at EDUCAUSE 09 Nov 2009 Sun VDI 3.1 Architecture and New Features Oct 2009 VDI 3.1 is Early-Access Sep 2009 Virtualization for MySQL on VMware Sep 2009 Silpion & 13. Stock Sommerparty Sep 2009 Sun Ray and VMware View 3.1.1 2009-08-31 New Set of Sun Ray Status Icons 2009-08-25 Virtualizing the VDI Core? 2009-08-23 World Usability Day Hamburg 2009 - CfP 2009-07-16 Rising Sun 2009-07-15 featuring twittermeme 2009-06-19 ISC09 Student Party on June-20 /Hamburg 2009-06-18 Before and behind the curtain of JavaOne 2009-06-09 20k desktops at JavaOne 2009-06-01 sweet microblogging 2009-05-25 VDI 3 - Why you need 3 VDI hosts and what you can do about that? 2009-05-21 IA Konferenz 2009 2009-05-20 Sun VDI 3 UX Story - Power of the Web 2009-05-06 Planet of Sun and Oracle User Experience Design 2009-04-22 Sun VDI 3 UX Story - User Research 2009-04-08 Sun VDI 3 UX Story - Concept Workshops 2009-04-06 Localized documentation for Sun Ray Connector for VMware View Manager 1.1 2009-04-03 Sun VDI 3 Press Release 2009-03-25 Sun VDI 3 launches today! 2009-03-25 Sun Ray Connector for VMware View Manager 1.1 Update 2009-03-11 desktop virtualization wiki relaunch 2009-03-06 VDI 3 at CeBIT hall 6, booth E36 2009-03-02 Keyboard layout problems with Sun Ray Connector for VMware VDM 2009-02-23 wikis.sun.com tips & tricks 2009-02-23 Sun VDI 3 is in Early Access 2009-02-09 VirtualCenter unable to decrypt passwords 2009-02-02 Sun & VMware Desktop Training 2009-01-30 VDI at next09? 2009-01-16 Sun VDI: How to use virtual machines with multiple network adapters 2009-01-07 Sun Ray and VMware View 2009-01-07 Hamburg World Usability Day 2008 - Webcasts 2009-01-06 Sun Ray Connector for VMware VDM slides 2008-12-15 mother of all demos 2008-12-08 Build your own Thumper 2008-12-03 Troubleshooting Sun Ray Connector for VMware VDM 2008-12-02 My Roller Tag Cloud 2008-11-28 Sun Ray Connector: SSL connection to VDM 2008-11-25 Setting up SSL and Sun Ray Connector for VMware VDM 2008-11-13 Inspiration for Today and Tomorrow 2008-10-23 Sun Ray Connector for VMware VDM released 2008-10-14 From Sketchpad to ILoveSketch 2008-10-09 Desktop Virtualization on Xing 2008-10-06 User Experience Forum on Xing 2008-10-06 Sun Ray Connector for VMware VDM certified 2008-09-17 Virtual Clouds over Las Vegas 2008-09-14 Bill Verplank sketches metaphors 2008-09-04 End of Early Access - Sun Ray Connector for VMware 2008-08-27 Early Access: Sun Ray Connector for VMware Virtual Desktop Manager 2008-08-12 Sun Virtual Desktop Connector - Insides on Recycling Part 2 2008-07-20 Sun Virtual Desktop Connector - Insides on Recycling Part 3 2008-07-20 Sun Virtual Desktop Connector - Insides on Recycling 2008-07-20 lost in wiki space 2008-07-07 Evolution of the Desktop 2008-06-17 Virtual Desktop Webcast 2008-06-16 Woodstock 2008-06-16 What's a Desktop PC anyway? 2008-06-09 Virtual-T-Box 2008-06-05 Virtualization Glossary 2008-05-06 Five User Experience Principles 2008-04-25 Virtualization News Feed 2008-04-21 Acetylcholinesterase - Second Season 2008-04-18 Acetylcholinesterase - End of Signal 2007-12-31 Produkt-Management ist... 2007-10-22 Usability Verbände, Verteiler und Netzwerke. 2007-10-02 The Meaning is the Message 2007-09-28 Visualization Methods 2007-09-10 Inhouse und Open Source Projekte – Usability verankern und Synergien nutzen 2007-09-03 Der Schwabe Darth Vader entdeckt das Virale Marketing 2007-08-29 Dick Hardt 3.0 on Identity 2.0 2007-08-27 quality of written text depends on the tool 2007-07-27 podcasts for reboot9 2007-06-04 It is the user's itch that need to be scratched 2007-05-25 A duel at reboot9 2007-05-14 Taxonomien und Folksonomien - Tagging als neues HCI-Element 2007-05-10 Dueling Interaction Models of Personal-Computing and Web-Computing 2007-03-01 22.März: Weizenbaum. Rebel at Work. /Filmpremiere Hamburg 2007-02-25 Bruce Sterling at UbiComp 2006 /webcast 2006-11-12 FSOSS 2006 /webcasts 2006-11-10 Highway 101 2006-11-09 User Experience Roundtable Hamburg: EuroGEL 2006 2006-11-08 Douglas Adams' Hyperland (BBC 1990) 2006-10-08 Taxonomien und Folksonomien – Tagging als neues HCI-Element 2006-09-13 Usability im Unternehmen 2006-09-13 Doug does HyperScope 2006-08-26 TED Talks and TechTalks 2006-08-21 Kai Krause über seine Freundschaft zu Douglas Adams 2006-07-20 Rebel At Work: Film Portrait on Weizenbaum 2006-07-04 Gabriele Fischer, mp3 2006-06-07 Dick Hardt at ETech 06 2006-06-05 Weinberger: From Control to Conversation 2006-04-16 Eye Tracking at User Experience Roundtable Hamburg 2006-04-14 dropping knowledge 2006-04-09 GEL 2005 2006-03-13 slide photos of reboot7 2006-03-04 Dick Hardt on Identity 2.0 2006-02-28 User Experience Newsletter #13: Versioning 2006-02-03 Ester Dyson on Choice and Happyness 2006-02-02 Requirements-Engineering im Spannungsfeld von Individual- und Produktsoftware 2006-01-15 User Experience Newsletter #12: Intuition Quiz 2005-11-30 User Experience und Requirements-Engineering für Software-Projekte 2005-10-31 Ivan Sutherland on "Research and Fun" 2005-10-18 Ars Electronica / Mensch und Computer 2005 2005-09-14 60 Jahre nach Memex: Über die Unvereinbarkeit von Desktop- und Web-Paradigma 2005-08-31 reboot 7 2005-06-30

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  • Getting WCF Services in a Silverlight solution to play nice on deployment

    - by brendonpage
    I have come across 2 issues with deploying WCF services in a Silverlight solution, admittedly the one is more of a hiccup, and only occurs if you take the easy way out and reference your services through visual studio. The First Issue This occurs when you deploy your WFC services to an IIS server. When browse to the services using your web browser, you are greeted with “This collection already contains an address with scheme http.  There can be at most one address per scheme in this collection.”. When you make a call to this service from your Silverlight application, you get the extremely helpful “NotFound” error, this error message can be found in the error property of the event arguments on the complete event handler for that call. As it did with me this will leave most people scratching their head, because the very same services work just fine on the ASP.NET Development Web Server and on my local IIS server. Now I’m no server/hosting/IIS expert so I did a bit of searching when I first encountered this issue. I found out this happens because IIS supports multiple address bindings per protocol (http/https/ftp … etc) per web site, but WCF only supports binding to one address per protocol. This causes a problem when the WCF service is hosted on a site with multiple address bindings, because IIS provides all of the bindings to the host factory when running the service. While this problem occurs mainly on shared hosting solutions, it is not limited to shared hosting, it just seems like all shared hosting providers setup sites on their servers with multiple address bindings. For interests sake I added functionality to the example project attached to this post to dump the addresses given to the WCF service by IIS into a log file. This was the output on the shared hosting solution I use: http://mydomain.co.za/Services/TestService.svc http://www.mydomain.co.za/Services/TestService.svc http://mydomain-co-za.win13.wadns.net/Services/TestService.svc http://win13/Services/TestService.svc As you can see all these addresses are for the http protocol, which is where it all goes wrong for WCF. Fixes for the First Issue There are a few ways to get around this. The first being the easiest, target .NET 4! Yes that's right in .NET 4 WCF services support multiple addresses per protocol. This functionality is enabled by an option, which is on by default if you create a new project, you will need to turn on if you are upgrading to .NET 4. To do this set the multipleSiteBindingsEnabled property of the serviceHostingEnviroment tag in the web.config file to true, as shown below: <system.serviceModel>     <serviceHostingEnvironment multipleSiteBindingsEnabled="true" /> </system.serviceModel> Beware this ONLY works in .NET 4, so if you don’t have a server with .NET 4 installed on that you can deploy to, you will need to employ one of the other work a rounds. The second option will work for .NET 3.5 & 4. For this option all you need to do is modify the web.config file and add baseAddressPrefixFilters to the serviceHostingEnviroment tag as shown below: <system.serviceModel>     <serviceHostingEnvironment>         <baseAddressPrefixFilters>              <add prefix="http://www.mydomain.co.za"/>         </baseAddressPrefixFilters>     </serviceHostingEnvironment> </system.serviceModel> These will be used to filter the list of base addresses that IIS provides to the host factory. When specifying these prefix filters be sure to specify filters which will only allow 1 result through, otherwise the entire exercise will be pointless. There is however a problem with this work a round, you are only allowed to specify 1 prefix filter per protocol. Which means you can’t add filters for all your environments, this will therefore add to the list of things to do before deploying or switching dev machines. The third option is the one I currently employ, it will work for .NET 3, 3.5 & 4, although it is not needed for .NET 4. For this option you create a custom host factory which inherits from the ServiceHostFactory class. In the implementation of the ServiceHostFactory you employ logic to figure out which of the base addresses, that are give by IIS, to use when creating the service host. The logic you use to do this is completely up to you, I have seen quite a few solutions that simply statically reference an index from the list of base addresses, this works for most situations but falls short in others. For instance, if the order of the base addresses where to change, it might end up returning an address that only resolves on the servers local network, like the last one in the example I gave at the beginning. Another instance, if a request comes in on a different protocol, like https, you will be creating the service host using an address which is on the incorrect protocol, like http. To reliably find the correct address to use, I use the address that the service was requested on. To accomplish this I use the HttpContext, which requires the service to operate with AspNetCompatibilityRequirements set on. If for some reason running you services with AspNetCompatibilityRequirements on isn’t an option, you can still use this method, you will just have to come up with your own logic for selecting the correct address. First you will need to enable AspNetCompatibilityRequirements for your hosting environment, to do this you will need to set it to true in the web.config file as shown below: <system.serviceModel>     <serviceHostingEnvironment AspNetCompatibilityRequirements="true" /> </system.serviceModel> You will then need to mark any services that are going to use the custom host factory, to allow AspNetCompatibilityRequirements, as shown below: [AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)] public class TestService { } Now for the custom host factory, this is where the logic lives that selects the correct address to create service host with. The one i use is shown below: public class CustomHostFactory : ServiceHostFactory { protected override ServiceHost CreateServiceHost(Type serviceType, Uri[] baseAddresses) { // // Compose a prefix filter based on the requested uri // string prefixFilter = HttpContext.Current.Request.Url.Scheme + "://" + HttpContext.Current.Request.Url.DnsSafeHost; if (!HttpContext.Current.Request.Url.IsDefaultPort) { prefixFilter += ":" + HttpContext.Current.Request.Url.Port.ToString() + "/"; } // // Find a base address that matches the prefix filter // foreach (Uri baseAddress in baseAddresses) { if (baseAddress.OriginalString.StartsWith(prefixFilter)) { return new ServiceHost(serviceType, baseAddress); } } // // Throw exception if no matching base address was found // throw new Exception("Custom Host Factory: No base address matching '" + prefixFilter + "' was found."); } } The most important line in the custom host factory is the one that returns a new service host. This has to return a service host that specifies only one base address per protocol. Since I filter by the address the request came on in, I only need to create the service host with one address, since this address will always be of the correct protocol. Now you have a custom host factory you have to tell your services to use it. To do this you view the markup of the service by right clicking on it in the solution explorer and choosing “View Markup”. Then you add/set the value of the Factory property to the full namespace path of you custom host factory, as shown below. And that is it done, the service will now use the specified custom host factory. The Second Issue As I mentioned earlier this issue is more of a hiccup, but I thought worthy of a mention so I included it. This issue only occurs when you add a service reference to a Silverlight project. Visual Studio will generate a lot of code for you, part of that generated code is the ServiceReferences.ClientConfig file. This file stores the endpoint configuration that is used when accessing your services using the generated proxy classes. Here is what that file looks like: <configuration>     <system.serviceModel>         <bindings>             <customBinding>                 <binding name="CustomBinding_TestService">                     <binaryMessageEncoding />                     <httpTransport maxReceivedMessageSize="2147483647" maxBufferSize="2147483647" />                 </binding>                 <binding name="CustomBinding_BrokenService">                     <binaryMessageEncoding />                     <httpTransport maxReceivedMessageSize="2147483647" maxBufferSize="2147483647" />                 </binding>             </customBinding>         </bindings>         <client>             <endpoint address="http://localhost:49347/services/TestService.svc"                 binding="customBinding" bindingConfiguration="CustomBinding_TestService"                 contract="TestService.TestService" name="CustomBinding_TestService" />             <endpoint address="http://localhost:49347/Services/BrokenService.svc"                 binding="customBinding" bindingConfiguration="CustomBinding_BrokenService"                 contract="BrokenService.BrokenService" name="CustomBinding_BrokenService" />         </client>     </system.serviceModel> </configuration> As you will notice the addresses for the end points are set to the addresses of the services you added the service references from, so unless you are adding the service references from your live services, you will have to change these addresses before you deploy. This is little more than an annoyance really, but it adds to the list of things to do before you can deploy, and if left unchecked that list can get out of control. Fix for the Second Issue The way you would usually access a service added this way is to create an instance of the proxy class like so: BrokenServiceClient proxy = new BrokenServiceClient(); Closer inspection of these generated proxy classes reveals that there are a few overloaded constructors, one of which allows you to specify the end point address to use when creating the proxy. From here all you have to do is come up with some logic that will provide you with the relative path to your services. Since my WCF services are usually hosted in the same project as my Silverlight app I use the class shown below: public class ServiceProxyHelper { /// <summary> /// Create a broken service proxy /// </summary> /// <returns>A broken service proxy</returns> public static BrokenServiceClient CreateBrokenServiceProxy() { Uri address = new Uri(Application.Current.Host.Source, "../Services/BrokenService.svc"); return new BrokenServiceClient("CustomBinding_BrokenService", address.AbsoluteUri); } } Then I will create an instance of the proxy class using my service helper class like so: BrokenServiceClient proxy = ServiceProxyHelper.CreateBrokenServiceProxy(); The way this works is “Application.Current.Host.Source” will return the URL to the ClientBin folder the Silverlight app is hosted in, the “../Services/BrokenService.svc” is then used as the relative path to the service from the ClientBin folder, combined by the Uri object this gives me the URL to my service. The “CustomBinding_BrokenService” is a reference to the end point configuration in the ServiceReferences.ClientConfig file. Yes this means you still need the ServiceReferences.ClientConfig file. All this is doing is using a different end point address than the one specified in the ServiceReferences.ClientConfig file, all the other settings form the ServiceReferences.ClientConfig file are still used when creating the proxy. I have uploaded an example project which covers the custom host factory solution from the first issue and everything from the second issue. I included the code to write a list of base addresses to a log file in my implementation of the custom host factory, this is not need for the custom host factory to function and can safely be removed. Download (WCFServicesDeploymentExample.zip)

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  • What is SharePoint Out of the Box?

    - by Bil Simser
    It’s always fun in the blog-o-sphere and SharePoint bloggers always keep the pot boiling. Bjorn Furuknap recently posted a blog entry titled Why Out-of-the-Box Makes No Sense in SharePoint, quickly followed up by a rebuttal by Marc Anderson on his blog. Okay, now that we have all the players and the stage what’s the big deal? Bjorn started his post saying that you don’t use “out-of-the-box” (OOTB) SharePoint because it makes no sense. I have to disagree with his premise because what he calls OOTB is basically installing SharePoint and admiring it, but not using it. In his post he lays claim that modifying say the OOTB contacts list by removing (or I suppose adding) a column, now puts you in a situation where you’re no longer using the OOTB functionality. Really? Side note. Dear Internet, please stop comparing building software to building houses. Or comparing software architecture to building architecture. Or comparing web sites to making dinner. Are you trying to dumb down something so the general masses understand it? Comparing a technical skill to a construction operation isn’t the way to do this. Last time I checked, most people don’t know how to build houses and last time I checked people reading technical SharePoint blogs are generally technical people that understand the terms you use. Putting metaphors around software development to make it easy to understand is detrimental to the goal. </rant> Okay, where were we? Right, adding columns to lists means you are no longer using the OOTB functionality. Yeah, I still don’t get it. Another statement Bjorn makes is that using the OOTB functionality kills the flexibility SharePoint has in creating exactly what you want. IMHO this really flies in the absolute face of *where* SharePoint *really* shines. For the past year or so I’ve been leaning more and more towards OOTB solutions over custom development for the simple reason that its expensive to maintain systems and code and assets. SharePoint has enabled me to do this simply by providing the tools where I can give users what they need without cracking open up Visual Studio. This might be the fact that my day job is with a regulated company and there’s more scrutiny with spending money on anything new, but frankly that should be the position of any responsible developer, architect, manager, or PM. Do you really want to throw money away because some developer tells you that you need a custom web part when perhaps with some creative thinking or expectation setting with customers you can meet the need with what you already have. The way I read Bjorn’s terminology of “out-of-the-box” is install the software and tell people to go to a website and admire the OOTB system, but don’t change it! For those that know things like WordPress, DotNetNuke, SubText, Drupal or any of those content management/blogging systems, its akin to installing the software and setting up the “Hello World” blog post or page, then staring at it like it’s useful. “Yes, we are using WordPress!”. Then not adding a new post, creating a new category, or adding an About page. Perhaps I’m wrong in my interpretation. This leads us to what is OOTB SharePoint? To many people I’ve talked to the last few hours on twitter, email, etc. it is *not* just installing software but actually using it as it was fit for purpose. What’s the purpose of SharePoint then? It has many purposes, but using the OOTB templates Microsoft has given you the ability to collaborate on projects, author/share/publish documents, create pages, track items/contacts/tasks/etc. in a multi-user web based interface, and so on. Microsoft has pretty clear definitions of these different levels of SharePoint we’re talking about and I think it’s important for everyone to know what they are and what they mean. Personalization and Administration To me, this is the OOTB experience. You install the product and then are able to do things like create new lists, sites, edit and personalize pages, create new views, etc. Basically use the platform services available to you with Windows SharePoint Services (or SharePoint Foundation in 2010) to your full advantage. No code, no special tools needed, and very little user training required. Could you take someone who has never done anything in a website or piece of software and unleash them onto a site? Probably not. However I would argue that anyone who’s configured the Outlook reading layout or applied styles to a Word document probably won’t have too much difficulty in using SharePoint OUT OF THE BOX. Customization Here’s where things might get a bit murky but to me this is where you start looking at HTML/ASPX page code through SharePoint Designer, using jQuery scripts and plugging them into Web Part Pages via a Content Editor Web Part, and generally enhancing the site. The JavaScript debate might kick in here claiming it’s no different than C#, and frankly you can totally screw a site up with jQuery on a CEWP just as easily as you can with a C# delegate control deployed to the server file system. However (again, my blog, my opinion) the customization label comes in when I need to access the server (for example creating a custom theme) or have some kind of net-new element I add to the system that wasn’t there OOTB. It’s not content (like a new list or site), it’s code and does something functional. Development Here’s were the propeller hats come on and we’re talking algorithms and unit tests and compilers oh my. Software is deployed to the server, people are writing solutions after some kind of training (perhaps), there might be some specialized tools they use to craft and deploy the solutions, there’s the possibility of exceptions being thrown, etc. There are a lot of definitions here and just like customization it might get murky (do you let non-developers build solutions using development, i.e. jQuery/C#?). In my experience, it’s much more cost effective keeping solutions under the first two umbrellas than leaping into the third one. Arguably you could say that you can’t build useful solutions without *some* kind of code (even just some simple jQuery). I think you can get a *lot* of value just from using the OOTB experience and I don’t think you’re constraining your users that much. I’m not saying Marc or Bjorn are wrong. Like Obi-Wan stated, they’re both correct “from a certain point of view”. To me, SharePoint Out of the Box makes total sense and should not be dismissed. I just don’t agree with the premise that Bjorn is basing his statements on but that’s just my opinion and his is different and never the twain shall meet.

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  • Create PDF document using iTextSharp in ASP.Net 4.0 and MemoryMappedFile

    - by sreejukg
    In this article I am going to demonstrate how ASP.Net developers can programmatically create PDF documents using iTextSharp. iTextSharp is a software component, that allows developers to programmatically create or manipulate PDF documents. Also this article discusses the process of creating in-memory file, read/write data from/to the in-memory file utilizing the new feature MemoryMappedFile. I have a database of users, where I need to send a notice to all my users as a PDF document. The sending mail part of it is not covered in this article. The PDF document will contain the company letter head, to make it more official. I have a list of users stored in a database table named “tblusers”. For each user I need to send customized message addressed to them personally. The database structure for the users is give below. id Title Full Name 1 Mr. Sreeju Nair K. G. 2 Dr. Alberto Mathews 3 Prof. Venketachalam Now I am going to generate the pdf document that contains some message to the user, in the following format. Dear <Title> <FullName>, The message for the user. Regards, Administrator Also I have an image, bg.jpg that contains the background for the document generated. I have created .Net 4.0 empty web application project named “iTextSharpSample”. First thing I need to do is to download the iTextSharp dll from the source forge. You can find the url for the download here. http://sourceforge.net/projects/itextsharp/files/ I have extracted the Zip file and added the itextsharp.dll as a reference to my project. Also I have added a web form named default.aspx to my project. After doing all this, the solution explorer have the following view. In the default.aspx page, I inserted one grid view and associated it with a SQL Data source control that bind data from tblusers. I have added a button column in the grid view with text “generate pdf”. The output of the page in the browser is as follows. Now I am going to create a pdf document when the user clicking on the Generate PDF button. As I mentioned before, I am going to work with the file in memory, I am not going to create a file in the disk. I added an event handler for button by specifying onrowcommand event handler. My gridview source looks like <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataSourceID="SqlDataSource1" Width="481px" CellPadding="4" ForeColor="#333333" GridLines="None" onrowcommand="Generate_PDF" > ………………………………………………………………………….. ………………………………………………………………………….. </asp:GridView> In the code behind, I wrote the corresponding event handler. protected void Generate_PDF(object sender, GridViewCommandEventArgs e) { // The button click event handler code. // I am going to explain the code for this section in the remaining part of the article } The Generate_PDF method is straight forward, It get the title, fullname and message to some variables, then create the pdf using these variables. The code for getting data from the grid view is as follows // get the row index stored in the CommandArgument property int index = Convert.ToInt32(e.CommandArgument); // get the GridViewRow where the command is raised GridViewRow selectedRow = ((GridView)e.CommandSource).Rows[index]; string title = selectedRow.Cells[1].Text; string fullname = selectedRow.Cells[2].Text; string msg = @"There are some changes in the company policy, due to this matter you need to submit your latest address to us. Please update your contact details / personnal details by visiting the member area of the website. ................................... "; since I don’t want to save the file in the disk, I am going the new feature introduced in .Net framework 4, called Memory-Mapped Files. Using Memory-Mapped mapped file, you can created non-persisted memory mapped files, that are not associated with a file in a disk. So I am going to create a temporary file in memory, add the pdf content to it, then write it to the output stream. To read more about MemoryMappedFile, read this msdn article http://msdn.microsoft.com/en-us/library/dd997372.aspx The below portion of the code using MemoryMappedFile object to create a test pdf document in memory and perform read/write operation on file. The CreateViewStream() object will give you a stream that can be used to read or write data to/from file. The code is very straight forward and I included comment so that you can understand the code. using (MemoryMappedFile mmf = MemoryMappedFile.CreateNew("test1.pdf", 1000000)) { // Create a new pdf document object using the constructor. The parameters passed are document size, left margin, right margin, top margin and bottom margin. iTextSharp.text.Document d = new iTextSharp.text.Document(PageSize.A4, 72,72,172,72); //get an instance of the memory mapped file to stream object so that user can write to this using (MemoryMappedViewStream stream = mmf.CreateViewStream()) { // associate the document to the stream. PdfWriter.GetInstance(d, stream); /* add an image as bg*/ iTextSharp.text.Image jpg = iTextSharp.text.Image.GetInstance(Server.MapPath("Image/bg.png")); jpg.Alignment = iTextSharp.text.Image.UNDERLYING; jpg.SetAbsolutePosition(0, 0); //this is the size of my background letter head image. the size is in points. this will fit to A4 size document. jpg.ScaleToFit(595, 842); d.Open(); d.Add(jpg); d.Add(new Paragraph(String.Format("Dear {0} {1},", title, fullname))); d.Add(new Paragraph("\n")); d.Add(new Paragraph(msg)); d.Add(new Paragraph("\n")); d.Add(new Paragraph(String.Format("Administrator"))); d.Close(); } //read the file data byte[] b; using (MemoryMappedViewStream stream = mmf.CreateViewStream()) { BinaryReader rdr = new BinaryReader(stream); b = new byte[mmf.CreateViewStream().Length]; rdr.Read(b, 0, (int)mmf.CreateViewStream().Length); } Response.Clear(); Response.ContentType = "Application/pdf"; Response.BinaryWrite(b); Response.End(); } Press ctrl + f5 to run the application. First I got the user list. Click on the generate pdf icon. The created looks as follows. Summary: Creating pdf document using iTextSharp is easy. You will get lot of information while surfing the www. Some useful resources and references are mentioned below http://itextsharp.com/ http://www.mikesdotnetting.com/Article/82/iTextSharp-Adding-Text-with-Chunks-Phrases-and-Paragraphs http://somewebguy.wordpress.com/2009/05/08/itextsharp-simplify-your-html-to-pdf-creation/ Hope you enjoyed the article.

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  • Migrating from SQL Trace to Extended Events

    - by extended_events
    In SQL Server codenamed “Denali” we are moving our diagnostic tracing capabilities forward by building a system on top of Extended Events. With every new system you face the specter of migration which is always a bit of a hassle. I’m obviously motivated to see everyone move their diagnostic tracing systems over to the new extended events based system, so I wanted to make sure we lowered the bar for the migration process to help ease your trials. In my initial post on Denali CTP 1 I described a couple tables that we created that will help map the existing SQL Trace Event Classes to the equivalent Extended Events events. In this post I’ll describe the tables in a bit more details, explain the relationship between the SQL Trace objects (Event Class & Column) and Extended Event objects (Events & Actions) and at the end provide some sample code for a managed stored procedure that will take an existing SQL Trace session (eg. a trace that you can see in sys.Traces) and converts it into event session DDL. Can you relate? In some ways, SQL Trace and Extended Events is kind of like the Standard and Metric measuring systems in the United States. If you spend too much time trying to figure out how to convert between the two it will probably make your head hurt. It’s often better to just use the new system without trying to translate between the two. That said, people like to relate new things to the things they’re comfortable with, so, with some trepidation, I will now explain how these two systems are related to each other. First, some terms… SQL Trace is made up of Event Classes and Columns. The Event Class occurs as the result of some activity in the database engine, for example, SQL:Batch Completed fires when a batch has completed executing on the server. Each Event Class can have any number of Columns associated with it and those Columns contain the data that is interesting about the Event Class, such as the duration or database name. In Extended Events we have objects named Events, EventData field and Actions. The Event (some people call this an xEvent but I’ll stick with Event) is equivalent to the Event Class in SQL Trace since it is the thing that occurs as the result of some activity taking place in the server. An  EventData field (from now on I’ll just refer to these as fields) is a piece of information that is highly correlated with the event and is always included as part of the schema of an Event. An Action is something that can be associated with any Event and it will cause some additional “action” to occur when ever the parent Event occurs. Actions can do a number of different things for example, there are Actions that collect additional data and, take memory dumps. When mapping SQL Trace onto Extended Events, Columns are covered by a combination of both fields and Actions. Knowing exactly where a Column is covered by a field and where it is covered by an Action is a bit of an art, so we created the mapping tables to make you an Artist without the years of practice. Let me draw you a map. Event Mapping The table dbo.trace_xe_event_map exists in the master database with the following structure: Column_name Type trace_event_id smallint package_name nvarchar xe_event_name nvarchar By joining this table sys.trace_events using trace_event_id and to the sys.dm_xe_objects using xe_event_name you can get a fair amount of information about how Event Classes are related to Events. The most basic query this lends itself to is to match an Event Class with the corresponding Event. SELECT     t.trace_event_id,     t.name [event_class],     e.package_name,     e.xe_event_name FROM sys.trace_events t INNER JOIN dbo.trace_xe_event_map e     ON t.trace_event_id = e.trace_event_id There are a couple things you’ll notice as you peruse the output of this query: For the most part, the names of Events are fairly close to the original Event Class; eg. SP:CacheMiss == sp_cache_miss, and so on. We’ve mostly stuck to a one to one mapping between Event Classes and Events, but there are a few cases where we have combined when it made sense. For example, Data File Auto Grow, Log File Auto Grow, Data File Auto Shrink & Log File Auto Shrink are now all covered by a single event named database_file_size_change. This just seemed like a “smarter” implementation for this type of event, you can get all the same information from this single event (grow/shrink, Data/Log, Auto/Manual growth) without having multiple different events. You can use Predicates if you want to limit the output to just one of the original Event Class measures. There are some Event Classes that did not make the cut and were not migrated. These fall into two categories; there were a few Event Classes that had been deprecated, or that just did not make sense, so we didn’t migrate them. (You won’t find an Event related to mounting a tape – sorry.) The second class is bigger; with rare exception, we did not migrate any of the Event Classes that were related to Security Auditing using SQL Trace. We introduced the SQL Audit feature in SQL Server 2008 and that will be the compliance and auditing feature going forward. Doing this is a very deliberate decision to support separation of duties for DBAs. There are separate permissions required for SQL Audit and Extended Events tracing so you can assign these tasks to different people if you choose. (If you’re wondering, the permission for Extended Events is ALTER ANY EVENT SESSION, which is covered by CONTROL SERVER.) Action Mapping The table dbo.trace_xe_action_map exists in the master database with the following structure: Column_name Type trace_column_id smallint package_name nvarchar xe_action_name nvarchar You can find more details by joining this to sys.trace_columns on the trace_column_id field. SELECT     c.trace_column_id,     c.name [column_name],     a.package_name,     a.xe_action_name FROM sys.trace_columns c INNER JOIN    dbo.trace_xe_action_map a     ON c.trace_column_id = a.trace_column_id If you examine this list, you’ll notice that there are relatively few Actions that map to SQL Trace Columns given the number of Columns that exist. This is not because we forgot to migrate all the Columns, but because much of the data for individual Event Classes is included as part of the EventData fields of the equivalent Events so there is no need to specify them as Actions. Putting it all together If you’ve spent a bunch of time figuring out the inner workings of SQL Trace, and who hasn’t, then you probably know that the typically set of Columns you find associated with any given Event Class in SQL Profiler is not fix, but is determine by the contents of the table sys.trace_event_bindings. We’ve used this table along with the mapping tables to produce a list of Event + Action combinations that duplicate the SQL Profiler Event Class definitions using the following query, which you can also find in the Books Online topic How To: View the Extended Events Equivalents to SQL Trace Event Classes. USE MASTER; GO SELECT DISTINCT    tb.trace_event_id,    te.name AS 'Event Class',    em.package_name AS 'Package',    em.xe_event_name AS 'XEvent Name',    tb.trace_column_id,    tc.name AS 'SQL Trace Column',    am.xe_action_name as 'Extended Events action' FROM (sys.trace_events te LEFT OUTER JOIN dbo.trace_xe_event_map em    ON te.trace_event_id = em.trace_event_id) LEFT OUTER JOIN sys.trace_event_bindings tb    ON em.trace_event_id = tb.trace_event_id LEFT OUTER JOIN sys.trace_columns tc    ON tb.trace_column_id = tc.trace_column_id LEFT OUTER JOIN dbo.trace_xe_action_map am    ON tc.trace_column_id = am.trace_column_id ORDER BY te.name, tc.name As you might imagine, it’s also possible to map an existing trace definition to the equivalent event session by judicious use of fn_trace_geteventinfo joined with the two mapping tables. This query extracts the list of Events and Actions equivalent to the trace with ID = 1, which is most likely the Default Trace. You can find this query, along with a set of other queries and steps required to migrate your existing traces over to Extended Events in the Books Online topic How to: Convert an Existing SQL Trace Script to an Extended Events Session. USE MASTER; GO DECLARE @trace_id int SET @trace_id = 1 SELECT DISTINCT el.eventid, em.package_name, em.xe_event_name AS 'event'    , el.columnid, ec.xe_action_name AS 'action' FROM (sys.fn_trace_geteventinfo(@trace_id) AS el    LEFT OUTER JOIN dbo.trace_xe_event_map AS em       ON el.eventid = em.trace_event_id) LEFT OUTER JOIN dbo.trace_xe_action_map AS ec    ON el.columnid = ec.trace_column_id WHERE em.xe_event_name IS NOT NULL AND ec.xe_action_name IS NOT NULL You’ll notice in the output that the list doesn’t include any of the security audit Event Classes, as I wrote earlier, those were not migrated. But wait…there’s more! If this were an infomercial there’d by some obnoxious guy next to me blogging “Well Mike…that’s pretty neat, but I’m sure you can do more. Can’t you make it even easier to migrate from SQL Trace?”  Needless to say, I’d blog back, in an overly excited way, “You bet I can' obnoxious blogger side-kick!” What I’ve got for you here is a Extended Events Team Blog only special – this tool will not be sold in any store; it’s a special offer for those of you reading the blog. I’ve wrapped all the logic of pulling the configuration information out of an existing trace and and building the Extended Events DDL statement into a handy, dandy CLR stored procedure. Once you load the assembly and register the procedure you just supply the trace id (from sys.traces) and provide a name for the event session. Run the procedure and out pops the DDL required to create an equivalent session. Any aspects of the trace that could not be duplicated are included in comments within the DDL output. This procedure does not actually create the event session – you need to copy the DDL out of the message tab and put it into a new query window to do that. It also requires an existing trace (but it doesn’t have to be running) to evaluate; there is no functionality to parse t-sql scripts. I’m not going to spend a bunch of time explaining the code here – the code is pretty well commented and hopefully easy to follow. If not, you can always post comments or hit the feedback button to send us some mail. Sample code: TraceToExtendedEventDDL   Installing the procedure Just in case you’re not familiar with installing CLR procedures…once you’ve compile the assembly you can load it using a script like this: -- Context to master USE master GO -- Create the assembly from a shared location. CREATE ASSEMBLY TraceToXESessionConverter FROM 'C:\Temp\TraceToXEventSessionConverter.dll' WITH PERMISSION_SET = SAFE GO -- Create a stored procedure from the assembly. CREATE PROCEDURE CreateEventSessionFromTrace @trace_id int, @session_name nvarchar(max) AS EXTERNAL NAME TraceToXESessionConverter.StoredProcedures.ConvertTraceToExtendedEvent GO Enjoy! -Mike

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  • MVC 3 AdditionalMetadata Attribute with ViewBag to Render Dynamic UI

    - by Steve Michelotti
    A few months ago I blogged about using Model metadata to render a dynamic UI in MVC 2. The scenario in the post was that we might have a view model where the questions are conditionally displayed and therefore a dynamic UI is needed. To recap the previous post, the solution was to use a custom attribute called [QuestionId] in conjunction with an “ApplicableQuestions” collection to identify whether each question should be displayed. This allowed me to have a view model that looked like this: 1: [UIHint("ScalarQuestion")] 2: [DisplayName("First Name")] 3: [QuestionId("NB0021")] 4: public string FirstName { get; set; } 5: 6: [UIHint("ScalarQuestion")] 7: [DisplayName("Last Name")] 8: [QuestionId("NB0022")] 9: public string LastName { get; set; } 10: 11: [UIHint("ScalarQuestion")] 12: [QuestionId("NB0023")] 13: public int Age { get; set; } 14: 15: public IEnumerable<string> ApplicableQuestions { get; set; } At the same time, I was able to avoid repetitive IF statements for every single question in my view: 1: <%: Html.EditorFor(m => m.FirstName, new { applicableQuestions = Model.ApplicableQuestions })%> 2: <%: Html.EditorFor(m => m.LastName, new { applicableQuestions = Model.ApplicableQuestions })%> 3: <%: Html.EditorFor(m => m.Age, new { applicableQuestions = Model.ApplicableQuestions })%> by creating an Editor Template called “ScalarQuestion” that encapsulated the IF statement: 1: <%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl" %> 2: <%@ Import Namespace="DynamicQuestions.Models" %> 3: <%@ Import Namespace="System.Linq" %> 4: <% 5: var applicableQuestions = this.ViewData["applicableQuestions"] as IEnumerable<string>; 6: var questionAttr = this.ViewData.ModelMetadata.ContainerType.GetProperty(this.ViewData.ModelMetadata.PropertyName).GetCustomAttributes(typeof(QuestionIdAttribute), true) as QuestionIdAttribute[]; 7: string questionId = null; 8: if (questionAttr.Length > 0) 9: { 10: questionId = questionAttr[0].Id; 11: } 12: if (questionId != null && applicableQuestions.Contains(questionId)) { %> 13: <div> 14: <%: Html.Label("") %> 15: <%: Html.TextBox("", this.Model)%> 16: </div> 17: <% } %> You might want to go back and read the full post in order to get the full context. MVC 3 offers a couple of new features that make this scenario more elegant to implement. The first step is to use the new [AdditionalMetadata] attribute which, so far, appears to be an under appreciated new feature of MVC 3. With this attribute, I don’t need my custom [QuestionId] attribute anymore - now I can just write my view model like this: 1: [UIHint("ScalarQuestion")] 2: [DisplayName("First Name")] 3: [AdditionalMetadata("QuestionId", "NB0021")] 4: public string FirstName { get; set; } 5:   6: [UIHint("ScalarQuestion")] 7: [DisplayName("Last Name")] 8: [AdditionalMetadata("QuestionId", "NB0022")] 9: public string LastName { get; set; } 10:   11: [UIHint("ScalarQuestion")] 12: [AdditionalMetadata("QuestionId", "NB0023")] 13: public int Age { get; set; } Thus far, the documentation seems to be pretty sparse on the AdditionalMetadata attribute. It’s buried in the Other New Features section of the MVC 3 home page and, after showing the attribute on a view model property, it just says, “This metadata is made available to any display or editor template when a product view model is rendered. It is up to you to interpret the metadata information.” But what exactly does it look like for me to “interpret the metadata information”? Well, it turns out it makes the view much easier to work with. Here is the re-implemented ScalarQuestion template updated for MVC 3 and Razor: 1: @{ 2: object questionId; 3: ViewData.ModelMetadata.AdditionalValues.TryGetValue("QuestionId", out questionId); 4: if (ViewBag.applicableQuestions.Contains((string)questionId)) { 5: <div> 6: @Html.LabelFor(m => m) 7: @Html.TextBoxFor(m => m) 8: </div> 9: } 10: } So we’ve gone from 17 lines of code (in the MVC 2 version) to about 7-8 lines of code here. The first thing to notice is that in MVC 3 we now have a property called “AdditionalValues” that hangs off of the ModelMetadata property. This is automatically populated by any [AdditionalMetadata] attributes on the property. There is no more need for me to explicitly write Reflection code to GetCustomAttributes() and then check to see if those attributes were present. I can just call TryGetValue() on the dictionary to see if they were present. Secondly, the “applicableQuestions” anonymous type that I passed in from the calling view – in MVC 3 I now have a dynamic ViewBag property where I can just “dot into” the applicableQuestions with a nicer syntax than dictionary square bracket syntax. And there’s no problems calling the Contains() method on this dynamic object because at runtime the DLR has resolved that it is a generic List<string>. At this point you might be saying that, yes the view got much nicer than the MVC 2 version, but my view model got slightly worse.  In the previous version I had a nice [QuestionId] attribute but now, with the [AdditionalMetadata] attribute, I have to type the string “QuestionId” for every single property and hope that I don’t make a typo. Well, the good news is that it’s easy to create your own attributes that can participate in the metadata’s additional values. The key is that the attribute must implement that IMetadataAware interface and populate the AdditionalValues dictionary in the OnMetadataCreated() method: 1: public class QuestionIdAttribute : Attribute, IMetadataAware 2: { 3: public string Id { get; set; } 4:   5: public QuestionIdAttribute(string id) 6: { 7: this.Id = id; 8: } 9:   10: public void OnMetadataCreated(ModelMetadata metadata) 11: { 12: metadata.AdditionalValues["QuestionId"] = this.Id; 13: } 14: } This now allows me to encapuslate my “QuestionId” string in just one place and get back to my original attribute which can be used like this: [QuestionId(“NB0021”)]. The [AdditionalMetadata] attribute is a powerful and under-appreciated new feature of MVC 3. Combined with the dynamic ViewBag property, you can do some really interesting things with your applications with less code and ceremony.

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  • SQL SERVER – Concurrency Basics – Guest Post by Vinod Kumar

    - by pinaldave
    This guest post is by Vinod Kumar. Vinod Kumar has worked with SQL Server extensively since joining the industry over a decade ago. Working on various versions from SQL Server 7.0, Oracle 7.3 and other database technologies – he now works with the Microsoft Technology Center (MTC) as a Technology Architect. Let us read the blog post in Vinod’s own voice. Learning is always fun when it comes to SQL Server and learning the basics again can be more fun. I did write about Transaction Logs and recovery over my blogs and the concept of simplifying the basics is a challenge. In the real world we always see checks and queues for a process – say railway reservation, banks, customer supports etc there is a process of line and queue to facilitate everyone. Shorter the queue higher is the efficiency of system (a.k.a higher is the concurrency). Every database does implement this using checks like locking, blocking mechanisms and they implement the standards in a way to facilitate higher concurrency. In this post, let us talk about the topic of Concurrency and what are the various aspects that one needs to know about concurrency inside SQL Server. Let us learn the concepts as one-liners: Concurrency can be defined as the ability of multiple processes to access or change shared data at the same time. The greater the number of concurrent user processes that can be active without interfering with each other, the greater the concurrency of the database system. Concurrency is reduced when a process that is changing data prevents other processes from reading that data or when a process that is reading data prevents other processes from changing that data. Concurrency is also affected when multiple processes are attempting to change the same data simultaneously. Two approaches to managing concurrent data access: Optimistic Concurrency Model Pessimistic Concurrency Model Concurrency Models Pessimistic Concurrency Default behavior: acquire locks to block access to data that another process is using. Assumes that enough data modification operations are in the system that any given read operation is likely affected by a data modification made by another user (assumes conflicts will occur). Avoids conflicts by acquiring a lock on data being read so no other processes can modify that data. Also acquires locks on data being modified so no other processes can access the data for either reading or modifying. Readers block writer, writers block readers and writers. Optimistic Concurrency Assumes that there are sufficiently few conflicting data modification operations in the system that any single transaction is unlikely to modify data that another transaction is modifying. Default behavior of optimistic concurrency is to use row versioning to allow data readers to see the state of the data before the modification occurs. Older versions of the data are saved so a process reading data can see the data as it was when the process started reading and not affected by any changes being made to that data. Processes modifying the data is unaffected by processes reading the data because the reader is accessing a saved version of the data rows. Readers do not block writers and writers do not block readers, but, writers can and will block writers. Transaction Processing A transaction is the basic unit of work in SQL Server. Transaction consists of SQL commands that read and update the database but the update is not considered final until a COMMIT command is issued (at least for an explicit transaction: marked with a BEGIN TRAN and the end is marked by a COMMIT TRAN or ROLLBACK TRAN). Transactions must exhibit all the ACID properties of a transaction. ACID Properties Transaction processing must guarantee the consistency and recoverability of SQL Server databases. Ensures all transactions are performed as a single unit of work regardless of hardware or system failure. A – Atomicity C – Consistency I – Isolation D- Durability Atomicity: Each transaction is treated as all or nothing – it either commits or aborts. Consistency: ensures that a transaction won’t allow the system to arrive at an incorrect logical state – the data must always be logically correct.  Consistency is honored even in the event of a system failure. Isolation: separates concurrent transactions from the updates of other incomplete transactions. SQL Server accomplishes isolation among transactions by locking data or creating row versions. Durability: After a transaction commits, the durability property ensures that the effects of the transaction persist even if a system failure occurs. If a system failure occurs while a transaction is in progress, the transaction is completely undone, leaving no partial effects on data. Transaction Dependencies In addition to supporting all four ACID properties, a transaction might exhibit few other behaviors (known as dependency problems or consistency problems). Lost Updates: Occur when two processes read the same data and both manipulate the data, changing its value and then both try to update the original data to the new value. The second process might overwrite the first update completely. Dirty Reads: Occurs when a process reads uncommitted data. If one process has changed data but not yet committed the change, another process reading the data will read it in an inconsistent state. Non-repeatable Reads: A read is non-repeatable if a process might get different values when reading the same data in two reads within the same transaction. This can happen when another process changes the data in between the reads that the first process is doing. Phantoms: Occurs when membership in a set changes. It occurs if two SELECT operations using the same predicate in the same transaction return a different number of rows. Isolation Levels SQL Server supports 5 isolation levels that control the behavior of read operations. Read Uncommitted All behaviors except for lost updates are possible. Implemented by allowing the read operations to not take any locks, and because of this, it won’t be blocked by conflicting locks acquired by other processes. The process can read data that another process has modified but not yet committed. When using the read uncommitted isolation level and scanning an entire table, SQL Server can decide to do an allocation order scan (in page-number order) instead of a logical order scan (following page pointers). If another process doing concurrent operations changes data and move rows to a new location in the table, the allocation order scan can end up reading the same row twice. Also can happen if you have read a row before it is updated and then an update moves the row to a higher page number than your scan encounters later. Performing an allocation order scan under Read Uncommitted can cause you to miss a row completely – can happen when a row on a high page number that hasn’t been read yet is updated and moved to a lower page number that has already been read. Read Committed Two varieties of read committed isolation: optimistic and pessimistic (default). Ensures that a read never reads data that another application hasn’t committed. If another transaction is updating data and has exclusive locks on data, your transaction will have to wait for the locks to be released. Your transaction must put share locks on data that are visited, which means that data might be unavailable for others to use. A share lock doesn’t prevent others from reading but prevents them from updating. Read committed (snapshot) ensures that an operation never reads uncommitted data, but not by forcing other processes to wait. SQL Server generates a version of the changed row with its previous committed values. Data being changed is still locked but other processes can see the previous versions of the data as it was before the update operation began. Repeatable Read This is a Pessimistic isolation level. Ensures that if a transaction revisits data or a query is reissued the data doesn’t change. That is, issuing the same query twice within a transaction cannot pickup any changes to data values made by another user’s transaction because no changes can be made by other transactions. However, this does allow phantom rows to appear. Preventing non-repeatable read is a desirable safeguard but cost is that all shared locks in a transaction must be held until the completion of the transaction. Snapshot Snapshot Isolation (SI) is an optimistic isolation level. Allows for processes to read older versions of committed data if the current version is locked. Difference between snapshot and read committed has to do with how old the older versions have to be. It’s possible to have two transactions executing simultaneously that give us a result that is not possible in any serial execution. Serializable This is the strongest of the pessimistic isolation level. Adds to repeatable read isolation level by ensuring that if a query is reissued rows were not added in the interim, i.e, phantoms do not appear. Preventing phantoms is another desirable safeguard, but cost of this extra safeguard is similar to that of repeatable read – all shared locks in a transaction must be held until the transaction completes. In addition serializable isolation level requires that you lock data that has been read but also data that doesn’t exist. Ex: if a SELECT returned no rows, you want it to return no. rows when the query is reissued. This is implemented in SQL Server by a special kind of lock called the key-range lock. Key-range locks require that there be an index on the column that defines the range of values. If there is no index on the column, serializable isolation requires a table lock. Gets its name from the fact that running multiple serializable transactions at the same time is equivalent of running them one at a time. Now that we understand the basics of what concurrency is, the subsequent blog posts will try to bring out the basics around locking, blocking, deadlocks because they are the fundamental blocks that make concurrency possible. Now if you are with me – let us continue learning for SQL Server Locking Basics. Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: PostADay, SQL, SQL Authority, SQL Performance, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology Tagged: Concurrency

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  • Injection of banners in my webbrowsers possible malware

    - by Skadlig
    Recently I have started to suspect that I have some kind of virus on my computer. There are 3 symptoms: Banners are being displayed on pages that doesn't use commercials, for instance when viewing screen-shots on Steam. It is only displayed after the rest of the page has been loaded and seems to be injected into it. The whole page is replaced with a commercial with the option to skip the commercial. The page is replaced with a search window claiming that the page could not be found. I have tried to scan my computer with Antivir and Adaware but only found a couple of tracking cookies. I have run HijackThis but since this isn't really my area I haven't been able to discern what shouldn't be there except the line about zonealarm since I have uninstalled it. Is there anyone out there who is able to see if there is anything suspicious in the log-file at the end or has suggestions regarding programs that might be better to find the virus than Antivir and Adaware? Here is the whole (long) log: Logfile of Trend Micro HijackThis v2.0.2 Scan saved at 21:44:07, on 2010-04-15 Platform: Unknown Windows (WinNT 6.01.3504) MSIE: Internet Explorer v8.00 (8.00.7600.16385) Boot mode: Normal Running processes: C:\Windows\SysWOW64\HsMgr.exe C:\Program Files (x86)\Personal\bin\Personal.exe F:\Program Files (x86)\Apache Software Foundation\Apache2.2\bin\ApacheMonitor.exe C:\Program Files (x86)\Avira\AntiVir Desktop\avgnt.exe F:\Program Files (x86)\PowerISO\PWRISOVM.EXE C:\Program Files (x86)\Java\jre6\bin\jusched.exe C:\Program Files\ASUS Xonar DX Audio\Customapp\ASUSAUDIOCENTER.EXE F:\Program Files (x86)\Voddler\service\VNetManager.exe C:\Program Files (x86)\Emotum\Mobile Broadband\Mobile.exe F:\Program Files\Logitech\SetPoint\x86\SetPoint32.exe C:\Program Files (x86)\Lavasoft\Ad-Aware\AAWTray.exe F:\Program Files (x86)\Mozilla Firefox\firefox.exe F:\Program Files (x86)\Trend Micro\HijackThis\HijackThis.exe R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://go.microsoft.com/fwlink/?LinkId=54896 R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://go.microsoft.com/fwlink/?LinkId=69157 R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://go.microsoft.com/fwlink/?LinkId=69157 R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://go.microsoft.com/fwlink/?LinkId=54896 R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://go.microsoft.com/fwlink/?LinkId=54896 R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://go.microsoft.com/fwlink/?LinkId=69157 R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant = R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch = R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Local Page = C:\Windows\SysWOW64\blank.htm R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = F2 - REG:system.ini: UserInit=userinit.exe O2 - BHO: AcroIEHelperStub - {18DF081C-E8AD-4283-A596-FA578C2EBDC3} - C:\Program Files (x86)\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll O2 - BHO: gwprimawega - {83bb5261-81ec-25ae-4adf-e88936738525} - C:\Windows\SysWow64\aZfJupUw.dll O2 - BHO: ZoneAlarm Toolbar Registrar - {8A4A36C2-0535-4D2C-BD3D-496CB7EED6E3} - C:\Program Files\CheckPoint\ZAForceField\WOW64\TrustChecker\bin\TrustCheckerIEPlugin.dll (file missing) O2 - BHO: Windows Live inloggningshjälpen - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files (x86)\Common Files\Microsoft Shared\Windows Live\WindowsLiveLogin.dll O2 - BHO: Java(tm) Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - C:\Program Files (x86)\Java\jre6\bin\jp2ssv.dll O3 - Toolbar: ZoneAlarm Toolbar - {EE2AC4E5-B0B0-4EC6-88A9-BCA1A32AB107} - C:\Program Files\CheckPoint\ZAForceField\WOW64\TrustChecker\bin\TrustCheckerIEPlugin.dll (file missing) O4 - HKLM..\Run: [avgnt] "C:\Program Files (x86)\Avira\AntiVir Desktop\avgnt.exe" /min O4 - HKLM..\Run: [PWRISOVM.EXE] f:\Program Files (x86)\PowerISO\PWRISOVM.EXE O4 - HKLM..\Run: [SunJavaUpdateSched] "C:\Program Files (x86)\Java\jre6\bin\jusched.exe" O4 - HKLM..\Run: [QuickTime Task] "F:\Program Files (x86)\QuickTime\QTTask.exe" -atboottime O4 - HKLM..\Run: [Adobe Reader Speed Launcher] "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\Reader_sl.exe" O4 - HKLM..\Run: [VoddlerNet Manager] f:\Program Files (x86)\Voddler\service\VNetManager.exe O4 - HKCU..\Run: [Steam] "f:\program files (x86)\steam\steam.exe" -silent O4 - HKCU..\Run: [msnmsgr] "C:\Program Files (x86)\Windows Live\Messenger\msnmsgr.exe" /background O4 - Global Startup: BankID Security Application.lnk = C:\Program Files (x86)\Personal\bin\Personal.exe O4 - Global Startup: Logitech SetPoint.lnk = ? O4 - Global Startup: Monitor Apache Servers.lnk = F:\Program Files (x86)\Apache Software Foundation\Apache2.2\bin\ApacheMonitor.exe O13 - Gopher Prefix: O16 - DPF: {1E54D648-B804-468d-BC78-4AFFED8E262F} (System Requirements Lab) - http://www.nvidia.com/content/DriverDownload/srl/3.0.0.4/srl_bin/sysreqlab_nvd.cab O16 - DPF: {4871A87A-BFDD-4106-8153-FFDE2BAC2967} (DLM Control) - http://dlcdnet.asus.com/pub/ASUS/misc/dlm-activex-2.2.5.0.cab O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://fpdownload2.macromedia.com/get/shockwave/cabs/flash/swflash.cab O17 - HKLM\System\CCS\Services\Tcpip..{5F7DB2E1-29C4-4299-A483-B68B19E9F015}: NameServer = 195.54.122.221 195.54.122.211 O17 - HKLM\System\CS1\Services\Tcpip..{5F7DB2E1-29C4-4299-A483-B68B19E9F015}: NameServer = 195.54.122.221 195.54.122.211 O17 - HKLM\System\CS2\Services\Tcpip..{5F7DB2E1-29C4-4299-A483-B68B19E9F015}: NameServer = 195.54.122.221 195.54.122.211 O23 - Service: @%SystemRoot%\system32\Alg.exe,-112 (ALG) - Unknown owner - C:\Windows\System32\alg.exe (file missing) O23 - Service: Avira AntiVir Scheduler (AntiVirSchedulerService) - Avira GmbH - C:\Program Files (x86)\Avira\AntiVir Desktop\sched.exe O23 - Service: Avira AntiVir Guard (AntiVirService) - Avira GmbH - C:\Program Files (x86)\Avira\AntiVir Desktop\avguard.exe O23 - Service: Apache2.2 - Apache Software Foundation - F:\Program Files (x86)\Apache Software Foundation\Apache2.2\bin\httpd.exe O23 - Service: Dragon Age: Origins - Content Updater (DAUpdaterSvc) - BioWare - F:\Program Files (x86)\Dragon Age\bin_ship\DAUpdaterSvc.Service.exe O23 - Service: Device Error Recovery Service (dgdersvc) - Devguru Co., Ltd. - C:\Windows\system32\dgdersvc.exe O23 - Service: @%SystemRoot%\system32\efssvc.dll,-100 (EFS) - Unknown owner - C:\Windows\System32\lsass.exe (file missing) O23 - Service: @%systemroot%\system32\fxsresm.dll,-118 (Fax) - Unknown owner - C:\Windows\system32\fxssvc.exe (file missing) O23 - Service: @keyiso.dll,-100 (KeyIso) - Unknown owner - C:\Windows\system32\lsass.exe (file missing) O23 - Service: SAMSUNG KiesAllShare Service (KiesAllShare) - Unknown owner - F:\Program Files (x86)\Samsung\Kies\WiselinkPro\WiselinkPro.exe O23 - Service: Lavasoft Ad-Aware Service - Lavasoft - C:\Program Files (x86)\Lavasoft\Ad-Aware\AAWService.exe O23 - Service: Logitech Bluetooth Service (LBTServ) - Logitech, Inc. - C:\Program Files\Common Files\Logishrd\Bluetooth\LBTServ.exe O23 - Service: @comres.dll,-2797 (MSDTC) - Unknown owner - C:\Windows\System32\msdtc.exe (file missing) O23 - Service: MySQL - Unknown owner - F:\Program.exe (file missing) O23 - Service: @%SystemRoot%\System32\netlogon.dll,-102 (Netlogon) - Unknown owner - C:\Windows\system32\lsass.exe (file missing) O23 - Service: NVIDIA Display Driver Service (nvsvc) - Unknown owner - C:\Windows\system32\nvvsvc.exe (file missing) O23 - Service: Sony Ericsson OMSI download service (OMSI download service) - Unknown owner - f:\Program Files (x86)\Sony Ericsson\Sony Ericsson PC Suite\SupServ.exe O23 - Service: @%systemroot%\system32\psbase.dll,-300 (ProtectedStorage) - Unknown owner - C:\Windows\system32\lsass.exe (file missing) O23 - Service: @%systemroot%\system32\Locator.exe,-2 (RpcLocator) - Unknown owner - C:\Windows\system32\locator.exe (file missing) O23 - Service: @%SystemRoot%\system32\samsrv.dll,-1 (SamSs) - Unknown owner - C:\Windows\system32\lsass.exe (file missing) O23 - Service: ServiceLayer - Nokia. - C:\Program Files (x86)\PC Connectivity Solution\ServiceLayer.exe O23 - Service: @%SystemRoot%\system32\snmptrap.exe,-3 (SNMPTRAP) - Unknown owner - C:\Windows\System32\snmptrap.exe (file missing) O23 - Service: @%systemroot%\system32\spoolsv.exe,-1 (Spooler) - Unknown owner - C:\Windows\System32\spoolsv.exe (file missing) O23 - Service: @%SystemRoot%\system32\sppsvc.exe,-101 (sppsvc) - Unknown owner - C:\Windows\system32\sppsvc.exe (file missing) O23 - Service: Steam Client Service - Valve Corporation - C:\Program Files (x86)\Common Files\Steam\SteamService.exe O23 - Service: @%SystemRoot%\system32\ui0detect.exe,-101 (UI0Detect) - Unknown owner - C:\Windows\system32\UI0Detect.exe (file missing) O23 - Service: @%SystemRoot%\system32\vaultsvc.dll,-1003 (VaultSvc) - Unknown owner - C:\Windows\system32\lsass.exe (file missing) O23 - Service: @%SystemRoot%\system32\vds.exe,-100 (vds) - Unknown owner - C:\Windows\System32\vds.exe (file missing) O23 - Service: VoddlerNet - Voddler - f:\Program Files (x86)\Voddler\service\voddler.exe O23 - Service: @%systemroot%\system32\vssvc.exe,-102 (VSS) - Unknown owner - C:\Windows\system32\vssvc.exe (file missing) O23 - Service: @%systemroot%\system32\wbengine.exe,-104 (wbengine) - Unknown owner - C:\Windows\system32\wbengine.exe (file missing) O23 - Service: @%Systemroot%\system32\wbem\wmiapsrv.exe,-110 (wmiApSrv) - Unknown owner - C:\Windows\system32\wbem\WmiApSrv.exe (file missing) O23 - Service: @%PROGRAMFILES%\Windows Media Player\wmpnetwk.exe,-101 (WMPNetworkSvc) - Unknown owner - C:\Program Files (x86)\Windows Media Player\wmpnetwk.exe (file missing) -- End of file - 8958 bytes

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  • C#: Adding Functionality to 3rd Party Libraries With Extension Methods

    - by James Michael Hare
    Ever have one of those third party libraries that you love but it's missing that one feature or one piece of syntactical candy that would make it so much more useful?  This, I truly think, is one of the best uses of extension methods.  I began discussing extension methods in my last post (which you find here) where I expounded upon what I thought were some rules of thumb for using extension methods correctly.  As long as you keep in line with those (or similar) rules, they can often be useful for adding that little extra functionality or syntactical simplification for a library that you have little or no control over. Oh sure, you could take an open source project, download the source and add the methods you want, but then every time the library is updated you have to re-add your changes, which can be cumbersome and error prone.  And yes, you could possibly extend a class in a third party library and override features, but that's only if the class is not sealed, static, or constructed via factories. This is the perfect place to use an extension method!  And the best part is, you and your development team don't need to change anything!  Simply add the using for the namespace the extensions are in! So let's consider this example.  I love log4net!  Of all the logging libraries I've played with, it, to me, is one of the most flexible and configurable logging libraries and it performs great.  But this isn't about log4net, well, not directly.  So why would I want to add functionality?  Well, it's missing one thing I really want in the ILog interface: ability to specify logging level at runtime. For example, let's say I declare my ILog instance like so:     using log4net;     public class LoggingTest     {         private static readonly ILog _log = LogManager.GetLogger(typeof(LoggingTest));         ...     }     If you don't know log4net, the details aren't important, just to show that the field _log is the logger I have gotten from log4net. So now that I have that, I can log to it like so:     _log.Debug("This is the lowest level of logging and just for debugging output.");     _log.Info("This is an informational message.  Usual normal operation events.");     _log.Warn("This is a warning, something suspect but not necessarily wrong.");     _log.Error("This is an error, some sort of processing problem has happened.");     _log.Fatal("Fatals usually indicate the program is dying hideously."); And there's many flavors of each of these to log using string formatting, to log exceptions, etc.  But one thing there isn't: the ability to easily choose the logging level at runtime.  Notice, the logging levels above are chosen at compile time.  Of course, you could do some fun stuff with lambdas and wrap it, but that would obscure the simplicity of the interface.  And yes there is a Logger property you can dive down into where you can specify a Level, but the Level properties don't really match the ILog interface exactly and then you have to manually build a LogEvent and... well, it gets messy.  I want something simple and sexy so I can say:     _log.Log(someLevel, "This will be logged at whatever level I choose at runtime!");     Now, some purists out there might say you should always know what level you want to log at, and for the most part I agree with them.  For the most party the ILog interface satisfies 99% of my needs.  In fact, for most application logging yes you do always know the level you will be logging at, but when writing a utility class, you may not always know what level your user wants. I'll tell you, one of my favorite things is to write reusable components.  If I had my druthers I'd write framework libraries and shared components all day!  And being able to easily log at a runtime-chosen level is a big need for me.  After all, if I want my code to really be re-usable, I shouldn't force a user to deal with the logging level I choose. One of my favorite uses for this is in Interceptors -- I'll describe Interceptors in my next post and some of my favorites -- for now just know that an Interceptor wraps a class and allows you to add functionality to an existing method without changing it's signature.  At the risk of over-simplifying, it's a very generic implementation of the Decorator design pattern. So, say for example that you were writing an Interceptor that would time method calls and emit a log message if the method call execution time took beyond a certain threshold of time.  For instance, maybe if your database calls take more than 5,000 ms, you want to log a warning.  Or if a web method call takes over 1,000 ms, you want to log an informational message.  This would be an excellent use of logging at a generic level. So here was my personal wish-list of requirements for my task: Be able to determine if a runtime-specified logging level is enabled. Be able to log generically at a runtime-specified logging level. Have the same look-and-feel of the existing Debug, Info, Warn, Error, and Fatal calls.    Having the ability to also determine if logging for a level is on at runtime is also important so you don't spend time building a potentially expensive logging message if that level is off.  Consider an Interceptor that may log parameters on entrance to the method.  If you choose to log those parameter at DEBUG level and if DEBUG is not on, you don't want to spend the time serializing those parameters. Now, mine may not be the most elegant solution, but it performs really well since the enum I provide all uses contiguous values -- while it's never guaranteed, contiguous switch values usually get compiled into a jump table in IL which is VERY performant - O(1) - but even if it doesn't, it's still so fast you'd never need to worry about it. So first, I need a way to let users pass in logging levels.  Sure, log4net has a Level class, but it's a class with static members and plus it provides way too many options compared to ILog interface itself -- and wouldn't perform as well in my level-check -- so I define an enum like below.     namespace Shared.Logging.Extensions     {         // enum to specify available logging levels.         public enum LoggingLevel         {             Debug,             Informational,             Warning,             Error,             Fatal         }     } Now, once I have this, writing the extension methods I need is trivial.  Once again, I would typically /// comment fully, but I'm eliminating for blogging brevity:     namespace Shared.Logging.Extensions     {         // the extension methods to add functionality to the ILog interface         public static class LogExtensions         {             // Determines if logging is enabled at a given level.             public static bool IsLogEnabled(this ILog logger, LoggingLevel level)             {                 switch (level)                 {                     case LoggingLevel.Debug:                         return logger.IsDebugEnabled;                     case LoggingLevel.Informational:                         return logger.IsInfoEnabled;                     case LoggingLevel.Warning:                         return logger.IsWarnEnabled;                     case LoggingLevel.Error:                         return logger.IsErrorEnabled;                     case LoggingLevel.Fatal:                         return logger.IsFatalEnabled;                 }                                 return false;             }             // Logs a simple message - uses same signature except adds LoggingLevel             public static void Log(this ILog logger, LoggingLevel level, object message)             {                 switch (level)                 {                     case LoggingLevel.Debug:                         logger.Debug(message);                         break;                     case LoggingLevel.Informational:                         logger.Info(message);                         break;                     case LoggingLevel.Warning:                         logger.Warn(message);                         break;                     case LoggingLevel.Error:                         logger.Error(message);                         break;                     case LoggingLevel.Fatal:                         logger.Fatal(message);                         break;                 }             }             // Logs a message and exception to the log at specified level.             public static void Log(this ILog logger, LoggingLevel level, object message, Exception exception)             {                 switch (level)                 {                     case LoggingLevel.Debug:                         logger.Debug(message, exception);                         break;                     case LoggingLevel.Informational:                         logger.Info(message, exception);                         break;                     case LoggingLevel.Warning:                         logger.Warn(message, exception);                         break;                     case LoggingLevel.Error:                         logger.Error(message, exception);                         break;                     case LoggingLevel.Fatal:                         logger.Fatal(message, exception);                         break;                 }             }             // Logs a formatted message to the log at the specified level.              public static void LogFormat(this ILog logger, LoggingLevel level, string format,                                          params object[] args)             {                 switch (level)                 {                     case LoggingLevel.Debug:                         logger.DebugFormat(format, args);                         break;                     case LoggingLevel.Informational:                         logger.InfoFormat(format, args);                         break;                     case LoggingLevel.Warning:                         logger.WarnFormat(format, args);                         break;                     case LoggingLevel.Error:                         logger.ErrorFormat(format, args);                         break;                     case LoggingLevel.Fatal:                         logger.FatalFormat(format, args);                         break;                 }             }         }     } So there it is!  I didn't have to modify the log4net source code, so if a new version comes out, i can just add the new assembly with no changes.  I didn't have to subclass and worry about developers not calling my sub-class instead of the original.  I simply provide the extension methods and it's as if the long lost extension methods were always a part of the ILog interface! Consider a very contrived example using the original interface:     // using the original ILog interface     public class DatabaseUtility     {         private static readonly ILog _log = LogManager.Create(typeof(DatabaseUtility));                 // some theoretical method to time         IDataReader Execute(string statement)         {             var timer = new System.Diagnostics.Stopwatch();                         // do DB magic                                    // this is hard-coded to warn, if want to change at runtime tough luck!             if (timer.ElapsedMilliseconds > 5000 && _log.IsWarnEnabled)             {                 _log.WarnFormat("Statement {0} took too long to execute.", statement);             }             ...         }     }     Now consider this alternate call where the logging level could be perhaps a property of the class          // using the original ILog interface     public class DatabaseUtility     {         private static readonly ILog _log = LogManager.Create(typeof(DatabaseUtility));                 // allow logging level to be specified by user of class instead         public LoggingLevel ThresholdLogLevel { get; set; }                 // some theoretical method to time         IDataReader Execute(string statement)         {             var timer = new System.Diagnostics.Stopwatch();                         // do DB magic                                    // this is hard-coded to warn, if want to change at runtime tough luck!             if (timer.ElapsedMilliseconds > 5000 && _log.IsLogEnabled(ThresholdLogLevel))             {                 _log.LogFormat(ThresholdLogLevel, "Statement {0} took too long to execute.",                     statement);             }             ...         }     } Next time, I'll show one of my favorite uses for these extension methods in an Interceptor.

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  • Summary of Oracle E-Business Suite Technology Webcasts and Training

    - by BillSawyer
    Last Updated: November 16, 2011We're glad to hear that you've been finding our ATG Live Webcast series to be useful.  If you missed a webcast, you can download the presentation materials and listen to the recordings below. We're collecting other learning-related materials right now.  We'll update this summary with pointers to new training resources on an ongoing basis.  ATG Live Webcast Replays All of the ATG Live Webcasts are hosted by the Oracle University Knowledge Center.  In order to access the replays, you will need a free Oracle.com account. You can register for an Oracle.com account here.If you are a first-time OUKC user, you will have to accept the Terms of Use. Sign-in with your Oracle.com account, or if you don't already have one, use the link provided on the sign-in screen to create an account. After signing in, accept the Terms of Use. Upon completion of these steps, you will be directed to the replay. You only need to accept the Terms of Use once. Your acceptance will be noted on your account for all future OUKC replays and event registrations. 1. E-Business Suite R12 Oracle Application Framework (OAF) Rich User Interface Enhancements (Presentation) Prabodh Ambale (Senior Manager, ATG Development) and Gustavo Jiminez (Development Manager, ATG Development) offer a comprehensive review of the latest user interface enhancements and updates to OA Framework in EBS 12.  The webcast provides a detailed look at new features designed to enhance usability, including new capabilities for personalization and extensions, and features that support the use of dashboards and web services. (January 2011) 2. E-Business Suite R12 Service Oriented Architectures (SOA) Using the E-Business Suite Adapter (Presentation, Viewlet) Neeraj Chauhan (Product Manager, ATG Development) reviews the Service Oriented Architecture (SOA) capabilities within E-Business Suite 12, focussing on using the E-Business Suite Adapter to integrate EBS with third-party applications via web services, and orchestrate services and distributed transactions across disparate applications. (February 2011) 3. Deploying Oracle VM Templates for Oracle E-Business Suite and Oracle PeopleSoft Enterprise Applications Ivo Dujmovic (Director, ATG Development) reviews the latest capabilities for using Oracle VM to deploy virtualized EBS database and application tier instances using prebuilt EBS templates, wire those virtualized instances together using the EBS virtualization kit, and take advantage of live migration of user sessions between failing application tier nodes.  (February 2011) 4. How to Reduce Total Cost of Ownership (TCO) Using Oracle E-Business Suite Management Packs (Presentation) Angelo Rosado (Product Manager, ATG Development) provides an overview of how EBS sysadmins can make their lives easier with the Management Packs for Oracle E-Business Suite Release 12.  This session highlights key features in Application Management Pack (AMP) and Application Change Management Pack) that can automate or streamline system configurations, monitor EBS performance and uptime, keep multiple EBS environments in sync with patches and configurations, and create patches for your own EBS customizations and apply them with Oracle's own patching tools.  (June 2011) 5. Upgrading E-Business Suite 11i Customizations to R12 (Presentation) Sara Woodhull (Principal Product Manager, ATG Development) provides an overview of how E-Business Suite developers can manage and upgrade existing EBS 11i customizations to R12.  Sara covers methods for comparing customizations between Release 11i and 12, managing common customization types, managing deprecated technologies, and more. (July 2011) 6. Tuning All Layers of E-Business Suite (Part 1 of 3) (Presentation) Lester Gutierrez, Senior Architect, and Deepak Bhatnagar, Senior Manager, from the E-Business Suite Application Performance team, lead Tuning All Layers of E-Business Suite (Part 1 of 3). This webcast provides an overview of how Oracle E-Business Suite system administrators, DBAs, developers, and implementers can improve E-Business Suite performance by following a performance tuning framework. Part 1 focuses on the performance triage approach, tuning applications modules, upgrade performance best practices, and tuning the database tier. This ATG Live Webcast is an expansion of the performance sessions at conferences that are perennial favourites with hardcore Apps DBAs. (August 2011)  7. Oracle E-Business Suite Directions: Deployment and System Administration (Presentation) Max Arderius, Manager Applications Technology Group, and Ivo Dujmovic, Director Applications Technology group, lead Oracle E-Business Suite Directions: Deployment and System Administration covering important changes in E-Business Suite R12.2. The changes discussed in this presentation include Oracle E-Business Suite architecture, installation, upgrade, WebLogic Server integration, online patching, and cloning. This webcast provides an overview of how Oracle E-Business Suite system administrators, DBAs, developers, and implementers can prepare themselves for these changes in R12.2 of Oracle E-Business Suite. (October 2011) Oracle University Courses For a general listing of all Oracle University courses related to E-Business Suite Technology, use the Oracle University E-Business Suite Technology course catalog link. Oracle University E-Business Suite Technology Course Catalog 1. R12 Oracle Applications System Administrator Fundamentals In this course students learn concepts and functions that are critical to the System Administrator role in implementing and managing the Oracle E-Business Suite. Topics covered include configuring security and user management, configuring flexfields, managing concurrent processing, and setting up other essential features such as profile options and printing. In addition, configuration and maintenance of an Oracle E-Business Suite through Oracle Applications Manager is discussed. Students also learn the fundamentals of Oracle Workflow including its setup. The System Administrator Fundamentals course provides the foundation needed to effectively control security and ensure smooth operations for an E-Business Suite installation. Demonstrations and hands-on practice reinforce the fundamental concepts of configuring an Oracle E-Business Suite, as well as handling day-to-day system administrator tasks. 2. R12.x Install/Patch/Maintain Oracle E-Business Suite This course will be applicable for customers who have implemented Oracle E-Business Suite Release 12 or Oracle E-Business Suite 12.1. This course explains how to go about installing and maintaining an Oracle E-Business Suite Release 12.x system. Both Standard and Express installation types are covered in detail. Maintenance topics include a detailed examination of the standard tools and utilities, and an in-depth look at patching an Oracle E-Business Suite system. After this course, students will be able to make informed decisions about how to install an Oracle E-Business Suite system that meets their specific requirements, and how to maintain the system afterwards. The extensive hands-on practices include performing an installation on a Linux system, navigating the file system to locate key files, running the standard maintenance tools and utilities, applying patches, and carrying out cloning operations. 3. R12.x Extend Oracle Applications: Building OA Framework Applications This class is a hands-on lab-intensive course that will keep the student busy and active for the duration of the course. While the course covers the fundamentals that support OA Framework-based applications, the course is really an exercise in J2EE programming. Over the duration of the course, the student will create an OA Framework-based application that selects, inserts, updates, and deletes data from a R12 Oracle Applications instance. 4. R12.x Extend Oracle Applications: Customizing OA Framework Applications This course has been significantly changed from the prior version to include additional deployments. The course doesn't teach the specifics of configuration of each product. That is left to the product-specific courses. What the course does cover is the general methods of building, personalizing, and extending OA Framework-based pages within the E-Business Suite. Additionally, the course covers the methods to deploy those types of customizations. The course doesn't include discussion of the Oracle Forms-based pages within the E-Business Suite. 5. R12.x Extend Oracle Applications: OA Framework Personalizations Personalization is the ability within an E-Business Suite instance to make changes to the look and behavior of OA Framework-based pages without programming. And, personalizations are likely to survive patches and upgrades, increasing their utility. This course will systematically walk you through the myriad of personalization options, starting with simple examples and increasing in complexity from there. 6. E-Business Suite: BI Publisher 5.6.3 for Developers Starting with the basic concepts, architecture, and underlying standards of Oracle XML Publisher, this course will lead a student through a progress of exercises building their expertise. By the end of the course, the student should be able to create Oracle XML Publisher RTF templates and data templates. They should also be able to deploy and maintain a BI Publisher report in an E-Business Suite instance. Students will also be introduced to Oracle BI Publisher Enterprise. 7. R12.x Implement Oracle Workflow This course provides an overview of the architecture and features of Oracle Workflow and the benefits of using Oracle Workflow in an e-business environment. You can learn how to design workflow processes to automate and streamline business processes, and how to define event subscriptions to perform processing triggered by business events. Students also learn how to respond to workflow notifications, how to administer and monitor workflow processes, and what setup steps are required for Oracle Workflow. Demonstrations and hands-on practice reinforce the fundamental concepts. 8. R12.x Oracle E-Business Suite Essentials for Implementers Oracle R12.1 E-Business Essentials for Implementers is a course that provides a functional foundation for any E-Business Suite Fundamentals course.

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  • Entity Framework v1 &ndash; tips and Tricks Part 3

    - by Rohit Gupta
    General Tips on Entity Framework v1 & Linq to Entities: ToTraceString() If you need to know the underlying SQL that the EF generates for a Linq To Entities query, then use the ToTraceString() method of the ObjectQuery class. (or use LINQPAD) Note that you need to cast the LINQToEntities query to ObjectQuery before calling TotraceString() as follows: 1: string efSQL = ((ObjectQuery)from c in ctx.Contact 2: where c.Address.Any(a => a.CountryRegion == "US") 3: select c.ContactID).ToTraceString(); ================================================================================ MARS or MultipleActiveResultSet When you create a EDM Model (EDMX file) from the database using Visual Studio, it generates a connection string with the same name as the name of the EntityContainer in CSDL. In the ConnectionString so generated it sets the MultipleActiveResultSet attribute to true by default. So if you are running the following query then it streams multiple readers over the same connection: 1: using (BAEntities context = new BAEntities()) 2: { 3: var cons = 4: from con in context.Contacts 5: where con.FirstName == "Jose" 6: select con; 7: foreach (var c in cons) 8: { 9: if (c.AddDate < new System.DateTime(2007, 1, 1)) 10: { 11: c.Addresses.Load(); 12: } 13: } 14: } ================================================================================= Explicitly opening and closing EntityConnection When you call ToList() or foreach on a LINQToEntities query the EF automatically closes the connection after all the records from the query have been consumed. Thus if you need to run many LINQToEntities queries over the same connection then explicitly open and close the connection as follows: 1: using (BAEntities context = new BAEntities()) 2: { 3: context.Connection.Open(); 4: var cons = from con in context.Contacts where con.FirstName == "Jose" 5: select con; 6: var conList = cons.ToList(); 7: var allCustomers = from con in context.Contacts.OfType<Customer>() 8: select con; 9: var allcustList = allCustomers.ToList(); 10: context.Connection.Close(); 11: } ====================================================================== Dispose ObjectContext only if required After you retrieve entities using the ObjectContext and you are not explicitly disposing the ObjectContext then insure that your code does consume all the records from the LinqToEntities query by calling .ToList() or foreach statement, otherwise the the database connection will remain open and will be closed by the garbage collector when it gets to dispose the ObjectContext. Secondly if you are making updates to the entities retrieved using LinqToEntities then insure that you dont inadverdently dispose of the ObjectContext after the entities are retrieved and before calling .SaveChanges() since you need the SAME ObjectContext to keep track of changes made to the Entities (by using ObjectStateEntry objects). So if you do need to explicitly dispose of the ObjectContext do so only after calling SaveChanges() and only if you dont need to change track the entities retrieved any further. ======================================================================= SQL InjectionAttacks under control with EFv1 LinqToEntities and LinqToSQL queries are parameterized before they are sent to the DB hence they are not vulnerable to SQL Injection attacks. EntitySQL may be slightly vulnerable to attacks since it does not use parameterized queries. However since the EntitySQL demands that the query be valid Entity SQL syntax and valid native SQL syntax at the same time. So the only way one can do a SQLInjection Attack is by knowing the SSDL of the EDM Model and be able to write the correct EntitySQL (note one cannot append regular SQL since then the query wont be a valid EntitySQL syntax) and append it to a parameter. ====================================================================== Improving Performance You can convert the EntitySets and AssociationSets in a EDM Model into precompiled Views using the edmgen utility. for e.g. the Customer Entity can be converted into a precompiled view using edmgen and all LinqToEntities query against the contaxt.Customer EntitySet will use the precompiled View instead of the EntitySet itself (the same being true for relationships (EntityReference & EntityCollections of a Entity)). The advantage being that when using precompiled views the performance will be much better. The syntax for generating precompiled views for a existing EF project is : edmgen /mode:ViewGeneration /inssdl:BAModel.ssdl /incsdl:BAModel.csdl /inmsl:BAModel.msl /p:Chap14.csproj Note that this will only generate precompiled views for EntitySets and Associations and not for existing LinqToEntities queries in the project.(for that use CompiledQuery.Compile<>) Secondly if you have a LinqToEntities query that you need to run multiple times, then one should precompile the query using CompiledQuery.Compile method. The CompiledQuery.Compile<> method accepts a lamda expression as a parameter, which denotes the LinqToEntities query  that you need to precompile. The following is a example of a lamda that we can pass into the CompiledQuery.Compile() method 1: Expression<Func<BAEntities, string, IQueryable<Customer>>> expr = (BAEntities ctx1, string loc) => 2: from c in ctx1.Contacts.OfType<Customer>() 3: where c.Reservations.Any(r => r.Trip.Destination.DestinationName == loc) 4: select c; Then we call the Compile Query as follows: 1: var query = CompiledQuery.Compile<BAEntities, string, IQueryable<Customer>>(expr); 2:  3: using (BAEntities ctx = new BAEntities()) 4: { 5: var loc = "Malta"; 6: IQueryable<Customer> custs = query.Invoke(ctx, loc); 7: var custlist = custs.ToList(); 8: foreach (var item in custlist) 9: { 10: Console.WriteLine(item.FullName); 11: } 12: } Note that if you created a ObjectQuery or a Enitity SQL query instead of the LINQToEntities query, you dont need precompilation for e.g. 1: An Example of EntitySQL query : 2: string esql = "SELECT VALUE c from Contacts AS c where c is of(BAGA.Customer) and c.LastName = 'Gupta'"; 3: ObjectQuery<Customer> custs = CreateQuery<Customer>(esql); 1: An Example of ObjectQuery built using ObjectBuilder methods: 2: from c in Contacts.OfType<Customer>().Where("it.LastName == 'Gupta'") 3: select c This is since the Query plan is cached and thus the performance improves a bit, however since the ObjectQuery or EntitySQL query still needs to materialize the results into Entities hence it will take the same amount of performance hit as with LinqToEntities. However note that not ALL EntitySQL based or QueryBuilder based ObjectQuery plans are cached. So if you are in doubt always create a LinqToEntities compiled query and use that instead ============================================================ GetObjectStateEntry Versus GetObjectByKey We can get to the Entity being referenced by the ObjectStateEntry via its Entity property and there are helper methods in the ObjectStateManager (osm.TryGetObjectStateEntry) to get the ObjectStateEntry for a entity (for which we know the EntityKey). Similarly The ObjectContext has helper methods to get an Entity i.e. TryGetObjectByKey(). TryGetObjectByKey() uses GetObjectStateEntry method under the covers to find the object, however One important difference between these 2 methods is that TryGetObjectByKey queries the database if it is unable to find the object in the context, whereas TryGetObjectStateEntry only looks in the context for existing entries. It will not make a trip to the database ============================================================= POCO objects with EFv1: To create POCO objects that can be used with EFv1. We need to implement 3 key interfaces: IEntityWithKey IEntityWithRelationships IEntityWithChangeTracker Implementing IEntityWithKey is not mandatory, but if you dont then we need to explicitly provide values for the EntityKey for various functions (for e.g. the functions needed to implement IEntityWithChangeTracker and IEntityWithRelationships). Implementation of IEntityWithKey involves exposing a property named EntityKey which returns a EntityKey object. Implementation of IEntityWithChangeTracker involves implementing a method named SetChangeTracker since there can be multiple changetrackers (Object Contexts) existing in memory at the same time. 1: public void SetChangeTracker(IEntityChangeTracker changeTracker) 2: { 3: _changeTracker = changeTracker; 4: } Additionally each property in the POCO object needs to notify the changetracker (objContext) that it is updating itself by calling the EntityMemberChanged and EntityMemberChanging methods on the changeTracker. for e.g.: 1: public EntityKey EntityKey 2: { 3: get { return _entityKey; } 4: set 5: { 6: if (_changeTracker != null) 7: { 8: _changeTracker.EntityMemberChanging("EntityKey"); 9: _entityKey = value; 10: _changeTracker.EntityMemberChanged("EntityKey"); 11: } 12: else 13: _entityKey = value; 14: } 15: } 16: ===================== Custom Property ==================================== 17:  18: [EdmScalarPropertyAttribute(IsNullable = false)] 19: public System.DateTime OrderDate 20: { 21: get { return _orderDate; } 22: set 23: { 24: if (_changeTracker != null) 25: { 26: _changeTracker.EntityMemberChanging("OrderDate"); 27: _orderDate = value; 28: _changeTracker.EntityMemberChanged("OrderDate"); 29: } 30: else 31: _orderDate = value; 32: } 33: } Finally you also need to create the EntityState property as follows: 1: public EntityState EntityState 2: { 3: get { return _changeTracker.EntityState; } 4: } The IEntityWithRelationships involves creating a property that returns RelationshipManager object: 1: public RelationshipManager RelationshipManager 2: { 3: get 4: { 5: if (_relManager == null) 6: _relManager = RelationshipManager.Create(this); 7: return _relManager; 8: } 9: } ============================================================ Tip : ProviderManifestToken – change EDMX File to use SQL 2008 instead of SQL 2005 To use with SQL Server 2008, edit the EDMX file (the raw XML) changing the ProviderManifestToken in the SSDL attributes from "2005" to "2008" ============================================================= With EFv1 we cannot use Structs to replace a anonymous Type while doing projections in a LINQ to Entities query. While the same is supported with LINQToSQL, it is not with LinqToEntities. For e.g. the following is not supported with LinqToEntities since only parameterless constructors and initializers are supported in LINQ to Entities. (the same works with LINQToSQL) 1: public struct CompanyInfo 2: { 3: public int ID { get; set; } 4: public string Name { get; set; } 5: } 6: var companies = (from c in dc.Companies 7: where c.CompanyIcon == null 8: select new CompanyInfo { Name = c.CompanyName, ID = c.CompanyId }).ToList(); ;

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  • Silverlight Recruiting Application Part 6 - Adding an Interview Scheduling Module/View

    Between the last post and this one I went ahead and carried the ideas for the Jobs module and view into the Applicants module and view- they're both doing more or less the same thing, except with different objects being at their core.  Made for an easy cut-and-paste operation with a few items being switched from one to another.  Now that we have the ability to add postings and applicants, wouldn't it be nice if we could schedule an interview?  Of course it would! Scheduling Module I think you get the drift from previous posts that these project structures start looking somewhat similar.  The interview scheduling module is no different than the rest- it gets a SchedulingModule.cs file at the root that inherits from IModule, and there is a single SchedulerView.xsml and SchedulerViewModel.cs setup for our V+VM.  We have one unique concern as we enter into this- RadScheduler deals with AppointmentsSource, not ItemsSource, so there are some special considerations to take into account when planning this module. First, I need something which inherits from AppointmentBase.  This is the core of the RadScheduler appointment, and if you are planning to do any form of custom appointment, you'll want it to inherit from this.  Then you can add-on functionality as needed.  Here is my addition to the mix, the InterviewAppointment: 01.public class InterviewAppointment : AppointmentBase 02.{ 03.    private int _applicantID; 04.    public int ApplicantID 05.    { 06.        get { return this._applicantID; } 07.        set 08.        { 09.            if (_applicantID != value) 10.            { 11.                _applicantID = value; 12.                OnPropertyChanged("ApplicantID"); 13.            } 14.        } 15.    } 16.   17.    private int _postingID; 18.    public int PostingID 19.    { 20.        get { return _postingID; } 21.        set 22.        { 23.            if (_postingID != value) 24.            { 25.                _postingID = value; 26.                OnPropertyChanged("PostingID"); 27.            } 28.        } 29.    } 30.   31.    private string _body; 32.    public string Body 33.    { 34.        get { return _body; } 35.        set 36.        { 37.            if (_body != value) 38.            { 39.                _body = value; 40.                OnPropertyChanged("Body"); 41.            } 42.        } 43.    } 44.   45.    private int _interviewID; 46.    public int InterviewID 47.    { 48.        get { return _interviewID; } 49.        set 50.        { 51.            if (_interviewID != value) 52.            { 53.                _interviewID = value; 54.                OnPropertyChanged("InterviewID"); 55.            } 56.        } 57.    } 58.   59.    public override IAppointment Copy() 60.    { 61.        IAppointment appointment = new InterviewAppointment(); 62.        appointment.CopyFrom(this);             63.        return appointment; 64.    } 65.   66.    public override void CopyFrom(IAppointment other) 67.    {             68.        base.CopyFrom(other); 69.        var appointment = other as InterviewAppointment; 70.        if (appointment != null) 71.        { 72.            ApplicantID = appointment.ApplicantID; 73.            PostingID = appointment.PostingID; 74.            Body = appointment.Body; 75.            InterviewID = appointment.InterviewID; 76.        } 77.    } 78.} Nothing too exciting going on here, we just make sure that our custom fields are persisted (specifically set in CopyFrom at the bottom) and notifications are fired- otherwise this ends up exactly like the standard appointment as far as interactions, etc.  But if we've got custom appointment items... that also means we need to customize what our appointment dialog window will look like. Customizing the Edit Appointment Dialog This initially sounds a lot more intimidating than it really is.  The first step here depends on what you're dealing with for theming, but for ease of everything I went ahead and extracted my templates in Blend for RadScheduler so I could modify it as I pleased.  For the faint of heart, the RadScheduler template is a few thousand lines of goodness since there are some very complex things going on in that control.  I've gone ahead and trimmed down the template parts I don't need as much as possible, so what is left is all that is relevant to the Edit Appointment Dialog.  Here's the resulting Xaml, with line numbers, so I can explain further: 001.<UserControl.Resources> 002.    <!-- begin Necessary Windows 7 Theme Resources for EditAppointmentTemplate --> 003.    <helpers:DataContextProxy x:Key="DataContextProxy" /> 004.       005.    <telerik:Windows7Theme x:Key="Theme" /> 006.    <SolidColorBrush x:Key="DialogWindowBackground" 007.                     Color="White" /> 008.    <SolidColorBrush x:Key="CategorySelectorBorderBrush" 009.                     Color="#FFB1B1B1" /> 010.    <LinearGradientBrush x:Key="RadToolBar_InnerBackground" 011.                         EndPoint="0.5,1" 012.                         StartPoint="0.5,0"> 013.        <GradientStop Color="#FFFDFEFF" 014.                      Offset="0" /> 015.        <GradientStop Color="#FFDDE9F7" 016.                      Offset="1" /> 017.        <GradientStop Color="#FFE6F0FA" 018.                      Offset="0.5" /> 019.        <GradientStop Color="#FFDCE6F4" 020.                      Offset="0.5" /> 021.    </LinearGradientBrush> 022.    <Style x:Key="FormElementTextBlockStyle" 023.           TargetType="TextBlock"> 024.        <Setter Property="HorizontalAlignment" 025.                Value="Right" /> 026.        <Setter Property="VerticalAlignment" 027.                Value="Top" /> 028.        <Setter Property="Margin" 029.                Value="15, 15, 0, 2" /> 030.    </Style> 031.    <Style x:Key="FormElementStyle" 032.           TargetType="FrameworkElement"> 033.        <Setter Property="Margin" 034.                Value="10, 10, 0, 2" /> 035.    </Style> 036.    <SolidColorBrush x:Key="GenericShallowBorderBrush" 037.                     Color="#FF979994" /> 038.    <telerik:BooleanToVisibilityConverter x:Key="BooleanToVisibilityConverter" /> 039.    <telerikScheduler:ImportanceToBooleanConverter x:Key="ImportanceToBooleanConverter" /> 040.    <telerikScheduler:NullToVisibilityConverter x:Key="NullToVisibilityConverter" /> 041.    <telerikScheduler:InvertedNullToVisibilityConverter x:Key="InvertedNullToVisibilityConverter" /> 042.    <scheduler:ResourcesSeparatorConverter x:Key="ResourcesSeparatorConverter" /> 043.    <DataTemplate x:Key="IconDataEditTemplate"> 044.        <Image Source="/Telerik.Windows.Controls.Scheduler;component/Themes/Office/Images/cal.png" 045.               Margin="3,3,0,0" 046.               Width="16" 047.               Height="16" /> 048.    </DataTemplate> 049.    <DataTemplate x:Key="SingleSelectionTemplate"> 050.        <Grid VerticalAlignment="Stretch" 051.              HorizontalAlignment="Stretch"> 052.            <Grid.RowDefinitions> 053.                <RowDefinition Height="Auto" /> 054.            </Grid.RowDefinitions> 055.            <Grid.ColumnDefinitions> 056.                <ColumnDefinition Width="Auto" 057.                                  MinWidth="84" /> 058.                <ColumnDefinition Width="Auto" 059.                                  MinWidth="200" /> 060.            </Grid.ColumnDefinitions> 061.            <TextBlock x:Name="SelectionNameLabel" 062.                       Margin="0,13,4,2" 063.                       Text="{Binding ResourceType.DisplayName}" 064.                       Style="{StaticResource FormElementTextBlockStyle}" 065.                       Grid.Column="0" /> 066.            <telerikInput:RadComboBox ItemsSource="{Binding ResourceItems}" 067.                                      Width="185" 068.                                      Margin="5,10,20,2" 069.                                      HorizontalAlignment="Left" 070.                                      Grid.Column="1" 071.                                      ClearSelectionButtonVisibility="Visible" 072.                                      ClearSelectionButtonContent="Clear All" 073.                                      DisplayMemberPath="Resource.DisplayName" 074.                                      telerik:StyleManager.Theme="{StaticResource Theme}" 075.                                      SelectedItem="{Binding SelectedItem, Mode=TwoWay}" /> 076.        </Grid> 077.    </DataTemplate> 078.    <DataTemplate x:Key="MultipleSelectionTemplate"> 079.        <Grid VerticalAlignment="Stretch" 080.              HorizontalAlignment="Stretch"> 081.            <Grid.RowDefinitions> 082.                <RowDefinition Height="Auto" /> 083.            </Grid.RowDefinitions> 084.            <Grid.ColumnDefinitions> 085.                <ColumnDefinition Width="Auto" 086.                                  MinWidth="84" /> 087.                <ColumnDefinition Width="Auto" 088.                                  MinWidth="200" /> 089.            </Grid.ColumnDefinitions> 090.            <TextBlock x:Name="SelectionNameLabel" 091.                       Grid.Column="0" 092.                       Text="{Binding ResourceType.DisplayName}" 093.                       Margin="0,13,4,2" 094.                       Style="{StaticResource FormElementTextBlockStyle}" /> 095.            <telerikInput:RadComboBox Grid.Column="1" 096.                                      Width="185" 097.                                      HorizontalAlignment="Left" 098.                                      Margin="5,10,20,2" 099.                                      ItemsSource="{Binding ResourceItems}" 100.                                      SelectedIndex="{Binding SelectedIndex, Mode=TwoWay}" 101.                                      ClearSelectionButtonVisibility="Visible" 102.                                      ClearSelectionButtonContent="Clear All" 103.                                      telerik:StyleManager.Theme="{StaticResource Theme}"> 104.                <telerikInput:RadComboBox.ItemTemplate> 105.                    <DataTemplate> 106.                        <Grid HorizontalAlignment="Stretch" 107.                              VerticalAlignment="Stretch"> 108.                            <CheckBox VerticalAlignment="Center" 109.                                      HorizontalContentAlignment="Stretch" 110.                                      VerticalContentAlignment="Center" 111.                                      IsChecked="{Binding IsChecked, Mode=TwoWay}" 112.                                      Content="{Binding Resource.DisplayName}"> 113.                                <CheckBox.ContentTemplate> 114.                                    <DataTemplate> 115.                                        <TextBlock HorizontalAlignment="Stretch" 116.                                                   VerticalAlignment="Stretch" 117.                                                   Text="{Binding Content, RelativeSource={RelativeSource TemplatedParent}}" /> 118.                                    </DataTemplate> 119.                                </CheckBox.ContentTemplate> 120.                            </CheckBox> 121.                        </Grid> 122.                    </DataTemplate> 123.                </telerikInput:RadComboBox.ItemTemplate> 124.            </telerikInput:RadComboBox> 125.        </Grid> 126.    </DataTemplate> 127.    <scheduler:ResourceTypeTemplateSelector x:Key="ItemTemplateSelector" 128.                                            MultipleSelectionTemplate="{StaticResource MultipleSelectionTemplate}" 129.                                            SingleSelectionTemplate="{StaticResource SingleSelectionTemplate}" /> 130.    <!-- end Necessary Windows 7 Theme Resources for EditAppointmentTemplate -->  131.       132.    <ControlTemplate x:Key="EditAppointmentTemplate" 133.                     TargetType="telerikScheduler:AppointmentDialogWindow"> 134.        <StackPanel Background="{TemplateBinding Background}" 135.                    UseLayoutRounding="True"> 136.            <StackPanel Grid.Row="0" 137.                        Orientation="Horizontal" 138.                        Background="{StaticResource RadToolBar_InnerBackground}" 139.                        Grid.ColumnSpan="2" 140.                        Height="0"> 141.                <!-- Recurrence buttons --> 142.                <Border Margin="1,1,0,0" 143.                        Background="#50000000" 144.                        HorizontalAlignment="Left" 145.                        VerticalAlignment="Center" 146.                        Width="2" 147.                        Height="16"> 148.                    <Border Margin="0,0,1,1" 149.                            Background="#80FFFFFF" 150.                            HorizontalAlignment="Left" 151.                            Width="1" /> 152.                </Border> 153.                <Border Margin="1,1,0,0" 154.                        Background="#50000000" 155.                        HorizontalAlignment="Left" 156.                        VerticalAlignment="Center" 157.                        Width="2" 158.                        Height="16"> 159.                    <Border Margin="0,0,1,1" 160.                            Background="#80FFFFFF" 161.                            HorizontalAlignment="Left" 162.                            Width="1" /> 163.                </Border> 164.                <TextBlock telerik:LocalizationManager.ResourceKey="ShowAs" 165.                           VerticalAlignment="Center" 166.                           Margin="5,0,0,0" /> 167.                <telerikInput:RadComboBox ItemsSource="{TemplateBinding TimeMarkers}" 168.                                          Width="100" 169.                                          Height="20" 170.                                          VerticalAlignment="Center" 171.                                          Margin="5,0,0,0" 172.                                          ClearSelectionButtonVisibility="Visible" 173.                                          ClearSelectionButtonContent="Clear" 174.                                          SelectedItem="{Binding TimeMarker,RelativeSource={RelativeSource TemplatedParent},Mode=TwoWay}" 175.                                          telerik:StyleManager.Theme="{StaticResource Theme}"> 176.                    <telerikInput:RadComboBox.ItemTemplate> 177.                        <DataTemplate> 178.                            <StackPanel Orientation="Horizontal"> 179.                                <Rectangle Fill="{Binding TimeMarkerBrush}" 180.                                           Margin="2" 181.                                           Width="12" 182.                                           Height="12" /> 183.                                <TextBlock Text="{Binding TimeMarkerName}" 184.                                           Margin="2" /> 185.                            </StackPanel> 186.                        </DataTemplate> 187.                    </telerikInput:RadComboBox.ItemTemplate> 188.                </telerikInput:RadComboBox> 189.                <telerik:RadToggleButton x:Name="High" 190.                                         BorderThickness="0" 191.                                         Background="{StaticResource RadToolBar_InnerBackground}" 192.                                         DataContext="{TemplateBinding EditedAppointment}" 193.                                         telerik:StyleManager.Theme="{StaticResource Theme}" 194.                                         IsChecked="{Binding Importance,Mode=TwoWay, Converter={StaticResource ImportanceToBooleanConverter},ConverterParameter=High}" 195.                                         Margin="2,2,0,2" 196.                                         Width="23" 197.                                         Height="23" 198.                                         HorizontalContentAlignment="Center" 199.                                         ToolTipService.ToolTip="High importance" 200.                                         CommandParameter="High" 201.                                         Command="telerikScheduler:RadSchedulerCommands.SetAppointmentImportance"> 202.                    <StackPanel HorizontalAlignment="Center"> 203.                        <Path Stretch="Fill" 204.                              Height="10" 205.                              HorizontalAlignment="Center" 206.                              VerticalAlignment="Top" 207.                              Width="5.451" 208.                              Data="M200.39647,58.840393 C200.39337,58.336426 201.14566,57.683922 202.56244,57.684292 C204.06589,57.684685 204.73764,58.357765 204.72783,58.992363 C205.04649,61.795574 203.04713,64.181099 202.47388,66.133446 C201.93753,64.154961 199.9471,61.560352 200.39647,58.840393 z"> 209.                            <Path.Fill> 210.                                <LinearGradientBrush EndPoint="1.059,0.375" 211.                                                     StartPoint="-0.457,0.519"> 212.                                    <GradientStop Color="#FFFF0606" 213.                                                  Offset="0.609" /> 214.                                    <GradientStop Color="#FFBF0303" 215.                                                  Offset="0.927" /> 216.                                </LinearGradientBrush> 217.                            </Path.Fill> 218.                        </Path> 219.                        <Ellipse Height="3" 220.                                 HorizontalAlignment="Center" 221.                                 Margin="0,-1,0,0" 222.                                 VerticalAlignment="Top" 223.                                 Width="3"> 224.                            <Ellipse.Fill> 225.                                <RadialGradientBrush> 226.                                    <GradientStop Color="#FFFF0606" 227.                                                  Offset="0" /> 228.                                    <GradientStop Color="#FFBF0303" 229.                                                  Offset="1" /> 230.                                </RadialGradientBrush> 231.                            </Ellipse.Fill> 232.                        </Ellipse> 233.                    </StackPanel> 234.                </telerik:RadToggleButton> 235.                <telerik:RadToggleButton x:Name="Low" 236.                                         HorizontalContentAlignment="Center" 237.                                         BorderThickness="0" 238.                                         Background="{StaticResource RadToolBar_InnerBackground}" 239.                                         DataContext="{TemplateBinding EditedAppointment}" 240.                                         IsChecked="{Binding Importance,Mode=TwoWay, Converter={StaticResource ImportanceToBooleanConverter},ConverterParameter=Low}" 241.                                         Margin="0,2,0,2" 242.                                         Width="23" 243.                                         Height="23" 244.                                         ToolTipService.ToolTip="Low importance" 245.                                         CommandParameter="Low" 246.                                         telerik:StyleManager.Theme="{StaticResource Theme}" 247.                                         Command="telerikScheduler:RadSchedulerCommands.SetAppointmentImportance"> 248.                    <Path Stretch="Fill" 249.                          Height="12" 250.                          HorizontalAlignment="Center" 251.                          VerticalAlignment="Top" 252.                          Width="9" 253.                          Data="M222.40353,60.139881 L226.65768,60.139843 L226.63687,67.240196 L229.15347,67.240196 L224.37816,71.394943 L219.65274,67.240196 L222.37572,67.219345 z" 254.                          Stroke="#FF0365A7"> 255.                        <Path.Fill> 256.                            <LinearGradientBrush EndPoint="1.059,0.375" 257.                                                 StartPoint="-0.457,0.519"> 258.                                <GradientStop Color="#FFBBE4FF" /> 259.                                <GradientStop Color="#FF024572" 260.                                              Offset="0.836" /> 261.                                <GradientStop Color="#FF43ADF4" 262.                                              Offset="0.466" /> 263.                            </LinearGradientBrush> 264.                        </Path.Fill> 265.                    </Path> 266.                </telerik:RadToggleButton> 267.            </StackPanel > 268.            <Border DataContext="{TemplateBinding EditedAppointment}" 269.                    Background="{Binding Category.CategoryBrush}" 270.                    Visibility="{Binding Category,Converter={StaticResource NullToVisibilityConverter}}" 271.                    CornerRadius="3" 272.                    Height="20" 273.                    Margin="5,10,5,0"> 274.                <TextBlock Text="{Binding Category.DisplayName}" 275.                           VerticalAlignment="Center" 276.                           Margin="5,0,0,0" /> 277.            </Border> 278.            <Grid VerticalAlignment="Stretch" 279.                  HorizontalAlignment="Stretch" 280.                  DataContext="{TemplateBinding EditedAppointment}" 281.                  Background="{TemplateBinding Background}"> 282.                <Grid.RowDefinitions> 283.                    <RowDefinition Height="Auto" /> 284.                    <RowDefinition Height="Auto" /> 285.                    <RowDefinition Height="Auto" /> 286.                    <RowDefinition Height="Auto" /> 287.                    <RowDefinition Height="Auto" /> 288.                    <RowDefinition Height="Auto" /> 289.                    <RowDefinition Height="Auto" /> 290.                    <RowDefinition Height="Auto" /> 291.                    <RowDefinition Height="Auto" /> 292.                    <RowDefinition Height="Auto" /> 293.                </Grid.RowDefinitions> 294.                <Grid.ColumnDefinitions> 295.                    <ColumnDefinition Width="Auto" 296.                                      MinWidth="100" /> 297.                    <ColumnDefinition Width="Auto" 298.                                      MinWidth="200" /> 299.                </Grid.ColumnDefinitions> 300.                <!-- Subject --> 301.                <TextBlock x:Name="SubjectLabel" 302.                           Grid.Row="0" 303.                           Grid.Column="0" 304.                           Margin="0,15,0,2" 305.                           telerik:LocalizationManager.ResourceKey="Subject" 306.                           Style="{StaticResource FormElementTextBlockStyle}" /> 307.                <TextBox x:Name="Subject" 308.                         Grid.Row="0" 309.                         Grid.Column="1" 310.                         MinHeight="22" 311.                         Padding="4 2" 312.                         Width="340" 313.                         HorizontalAlignment="Left" 314.                         Text="{Binding Subject, Mode=TwoWay}" 315.                         MaxLength="255" 316.                         telerik:StyleManager.Theme="{StaticResource Theme}" 317.                         Margin="10,12,20,2" /> 318.                <!-- Description --> 319.                <TextBlock x:Name="DescriptionLabel" 320.                           Grid.Row="1" 321.                           Grid.Column="0" 322.                           Margin="0,13,0,2" 323.                           telerik:LocalizationManager.ResourceKey="Body" 324.                           Style="{StaticResource FormElementTextBlockStyle}" /> 325.                <TextBox x:Name="Body" 326.                         VerticalAlignment="top" 327.                         Grid.Row="1" 328.                         Grid.Column="1" 329.                         Height="Auto" 330.                         MaxHeight="82" 331.                         Width="340" 332.                         HorizontalAlignment="Left" 333.                         MinHeight="22" 334.                         Padding="4 2" 335.                         TextWrapping="Wrap" 336.                         telerik:StyleManager.Theme="{StaticResource Theme}" 337.                         Text="{Binding Body, Mode=TwoWay}" 338.                         AcceptsReturn="true" 339.                         Margin="10,10,20,2" 340.                         HorizontalScrollBarVisibility="Auto" 341.                         VerticalScrollBarVisibility="Auto" /> 342.                <!-- Start/End date --> 343.                <TextBlock x:Name="StartDateLabel" 344.                           Grid.Row="2" 345.                           Grid.Column="0" 346.                           Margin="0,13,0,2" 347.                           telerik:LocalizationManager.ResourceKey="StartTime" 348.                           Style="{StaticResource FormElementTextBlockStyle}" /> 349.                <telerikScheduler:DateTimePicker x:Name="StartDateTime" 350.                                                 Height="22" 351.                                                 Grid.Row="2" 352.                                                 Grid.Column="1" 353.                                                 HorizontalAlignment="Left" 354.                                                 Margin="10,10,20,2" 355.                                                 Style="{StaticResource FormElementStyle}" 356.                                                 SelectedDateTime="{Binding Start, Mode=TwoWay}" 357.                                                 telerikScheduler:StartEndDatePicker.EndPicker="{Binding ElementName=EndDateTime}" 358.                                                 IsTabStop="False" 359.                                                 IsEnabled="False" /> 360.                <TextBlock x:Name="EndDateLabel" 361.                           Grid.Row="3" 362.                           Grid.Column="0" 363.                           Margin="0,13,0,2" 364.                           telerik:LocalizationManager.ResourceKey="EndTime" 365.                           Style="{StaticResource FormElementTextBlockStyle}" /> 366.                <telerikScheduler:DateTimePicker x:Name="EndDateTime" 367.                                                 Height="22" 368.                                                 Grid.Row="3" 369.                                                 Grid.Column="1" 370.                                                 HorizontalAlignment="Left" 371.                                                 Margin="10,10,20,2" 372.                                                 Style="{StaticResource FormElementStyle}" 373.                                                 IsTabStop="False" 374.                                                 IsEnabled="False" 375.                                                 SelectedDateTime="{Binding End, Mode=TwoWay}" /> 376.                <!-- Is-all-day selector --> 377.                <CheckBox x:Name="AllDayEventCheckbox" 378.                          IsChecked="{Binding IsAllDayEvent, Mode=TwoWay}" 379.                          Grid.Row="4" 380.                          Grid.Column="1" 381.                          Margin="10,10,20,2" 382.                          HorizontalAlignment="Left" 383.                          telerik:StyleManager.Theme="{StaticResource Theme}" 384.                          telerik:LocalizationManager.ResourceKey="AllDayEvent"> 385.                    <telerik:CommandManager.InputBindings> 386.                        <telerik:InputBindingCollection> 387.                            <telerik:MouseBinding Command="telerikScheduler:RadSchedulerCommands.ChangeTimePickersVisibility" 388.                                                  Gesture="LeftClick" /> 389.                        </telerik:InputBindingCollection> 390.                    </telerik:CommandManager.InputBindings> 391.                </CheckBox> 392.                <Grid Grid.Row="5" 393.                      Grid.ColumnSpan="2"> 394.                    <Grid.ColumnDefinitions> 395.                        <ColumnDefinition Width="Auto" 396.                                          MinWidth="100" /> 397.                        <ColumnDefinition Width="Auto" 398.                                          MinWidth="200" /> 399.                    </Grid.ColumnDefinitions> 400.                    <Grid.RowDefinitions> 401.                        <RowDefinition Height="Auto" /> 402.                        <RowDefinition Height="Auto" /> 403.                    </Grid.RowDefinitions> 404.                    <TextBlock Text="Applicant" 405.                               Margin="0,13,0,2" 406.                               Style="{StaticResource FormElementTextBlockStyle}" /> 407.                    <telerikInput:RadComboBox IsEditable="False" 408.                                              Grid.Column="1" 409.                                              Height="24" 410.                                              VerticalAlignment="Center" 411.                                              ItemsSource="{Binding Source={StaticResource DataContextProxy}, Path=DataSource.ApplicantList}" 412.                                              SelectedValue="{Binding ApplicantID, Mode=TwoWay}" 413.                                              SelectedValuePath="ApplicantID" 414.                                              DisplayMemberPath="FirstName" /> 415.                       416.                    <TextBlock Text="Job" 417.                               Margin="0,13,0,2" 418.                               Grid.Row="1" 419.                               Style="{StaticResource FormElementTextBlockStyle}" /> 420.                    <telerikInput:RadComboBox IsEditable="False" 421.                                              Grid.Column="1" 422.                                              Grid.Row="1" 423.                                              Height="24" 424.                                              VerticalAlignment="Center" 425.                                              ItemsSource="{Binding Source={StaticResource DataContextProxy}, Path=DataSource.JobsList}" 426.                                              SelectedValue="{Binding PostingID, Mode=TwoWay}" 427.                                              SelectedValuePath="PostingID" 428.                                              DisplayMemberPath="JobTitle"/> 429.                </Grid> 430.                    <!-- Resources --> 431.                <Grid x:Name="ResourcesLayout" 432.                      Grid.Row="7" 433.                      Grid.Column="0" 434.                      Grid.ColumnSpan="2" 435.                      MaxHeight="130" 436.                      Margin="20,5,20,0"> 437.                    <Border Margin="0" 438.                            BorderThickness="1" 439.                            BorderBrush="{StaticResource GenericShallowBorderBrush}" 440.                            Visibility="{Binding ElementName=ResourcesScrollViewer, Path=ComputedVerticalScrollBarVisibility}"></Border> 441.                    <ScrollViewer x:Name="ResourcesScrollViewer" 442.                                  IsTabStop="false" 443.                                  Grid.Row="6" 444.                                  Grid.Column="0" 445.                                  Grid.ColumnSpan="2" 446.                                  Margin="1" 447.                                  telerik:StyleManager.Theme="{StaticResource Theme}" 448.                                  VerticalScrollBarVisibility="Auto"> 449.                        <scheduler:ResourcesItemsControl x:Name="PART_Resources" 450.                                                         HorizontalAlignment="Left" 451.                                                         Padding="0,2,0,5" 452.                                                         IsTabStop="false" 453.                                                         ItemsSource="{TemplateBinding ResourceTypeModels}" 454.                                                         ItemTemplateSelector="{StaticResource ItemTemplateSelector}" /> 455.                    </ScrollViewer> 456.                </Grid> 457.                <StackPanel x:Name="FooterControls" 458.                            Margin="5 10 10 10" 459.                            Grid.Row="8" 460.                            Grid.Column="1" 461.                            HorizontalAlignment="Left" 462.                            Orientation="Horizontal"> 463.                    <telerik:RadButton x:Name="OKButton" 464.                                       Margin="5" 465.                                       Padding="10 0" 466.                                       MinWidth="80" 467.                                       Command="telerikScheduler:RadSchedulerCommands.SaveAppointment" 468.                                       telerik:StyleManager.Theme="{StaticResource Theme}" 469.                                       telerikNavigation:RadWindow.ResponseButton="Accept" 470.                                       telerik:LocalizationManager.ResourceKey="SaveAndCloseCommandText"> 471.                    </telerik:RadButton> 472.                    <telerik:RadButton x:Name="CancelButton" 473.                                       Margin="5" 474.                                       Padding="10 0" 475.                                       MinWidth="80" 476.                                       telerik:LocalizationManager.ResourceKey="Cancel" 477.                                       telerik:StyleManager.Theme="{StaticResource Theme}" 478.                                       telerikNavigation:RadWindow.ResponseButton="Cancel" 479.                                       Command="telerik:WindowCommands.Close"> 480.                    </telerik:RadButton> 481.                </StackPanel> 482.            </Grid> 483.            <vsm:VisualStateManager.VisualStateGroups> 484.                <vsm:VisualStateGroup x:Name="RecurrenceRuleState"> 485.                    <vsm:VisualState x:Name="RecurrenceRuleIsNull"> 486.                        <Storyboard> 487.                            <ObjectAnimationUsingKeyFrames Storyboard.TargetName="StartDateTime" 488.                                                           Storyboard.TargetProperty="IsEnabled" 489.                                                           Duration="0"> 490.                                <DiscreteObjectKeyFrame KeyTime="0" 491.                                                        Value="True" /> 492.                            </ObjectAnimationUsingKeyFrames> 493.                            <ObjectAnimationUsingKeyFrames Storyboard.TargetName="EndDateTime" 494.                                                           Storyboard.TargetProperty="IsEnabled" 495.                                                           Duration="0"> 496.                                <DiscreteObjectKeyFrame KeyTime="0" 497.                                                        Value="True" /> 498.                            </ObjectAnimationUsingKeyFrames> 499.                            <ObjectAnimationUsingKeyFrames Storyboard.TargetName="AllDayEventCheckbox" 500.                                                           Storyboard.TargetProperty="IsEnabled" 501.                                                           Duration="0"> 502.                                <DiscreteObjectKeyFrame KeyTime="0" 503.                                                        Value="True" /> 504.                            </ObjectAnimationUsingKeyFrames> 505.                        </Storyboard> 506.                    </vsm:VisualState> 507.                    <vsm:VisualState x:Name="RecurrenceRuleIsNotNull"> 508.                        <Storyboard> 509.                            <ObjectAnimationUsingKeyFrames Storyboard.TargetName="StartDateTime" 510.                                                           Storyboard.TargetProperty="IsEnabled" 511.                                                           Duration="0"> 512.                                <DiscreteObjectKeyFrame KeyTime="0" 513.                                                        Value="False" /> 514.                            </ObjectAnimationUsingKeyFrames> 515.                            <ObjectAnimationUsingKeyFrames Storyboard.TargetName="EndDateTime" 516.                                                           Storyboard.TargetProperty="IsEnabled" 517.                                                           Duration="0"> 518.                                <DiscreteObjectKeyFrame KeyTime="0" 519.                                                        Value="False" /> 520.                            </ObjectAnimationUsingKeyFrames> 521.                            <ObjectAnimationUsingKeyFrames Storyboard.TargetName="AllDayEventCheckbox" 522.                                                           Storyboard.TargetProperty="IsEnabled" 523.                                                           Duration="0"> 524.                                <DiscreteObjectKeyFrame KeyTime="0" 525.                                                        Value="False" /> 526.                            </ObjectAnimationUsingKeyFrames> 527.                        </Storyboard> 528.                    </vsm:VisualState> 529.                </vsm:VisualStateGroup> 530.            </vsm:VisualStateManager.VisualStateGroups> 531.        </StackPanel> 532.    </ControlTemplate> 533.    <DataTemplate x:Key="AppointmentDialogWindowHeaderDataTemplate"> 534.        <StackPanel Orientation="Horizontal" 535.                    MaxWidth="400"> 536.            <TextBlock telerik:LocalizationManager.ResourceKey="Event" 537.                       Visibility="{Binding Appointment.IsAllDayEvent, Converter={StaticResource BooleanToVisibilityConverter}}" /> 538.            <TextBlock telerik:LocalizationManager.ResourceKey="Appointment" 539.                       Visibility="{Binding Appointment.IsAllDayEvent, Converter={StaticResource InvertedBooleanToVisibilityConverter}}" /> 540.            <TextBlock Text=" - " /> 541.            <TextBlock x:Name="SubjectTextBlock" 542.                       Visibility="{Binding Appointment.Subject, Converter={StaticResource NullToVisibilityConverter}}" 543.                       Text="{Binding Appointment.Subject}" /> 544.            <TextBlock telerik:LocalizationManager.ResourceKey="Untitled" 545.                       Visibility="{Binding Appointment.Subject, Converter={StaticResource InvertedNullToVisibilityConverter}}" /> 546.        </StackPanel> 547.    </DataTemplate> 548.    <Style x:Key="EditAppointmentStyle" 549.           TargetType="telerikScheduler:AppointmentDialogWindow"> 550.        <Setter Property="IconTemplate" 551.                Value="{StaticResource IconDataEditTemplate}" /> 552.        <Setter Property="HeaderTemplate" 553.                Value="{StaticResource AppointmentDialogWindowHeaderDataTemplate}" /> 554.        <Setter Property="Background" 555.                Value="{StaticResource DialogWindowBackground}" /> 556.        <Setter Property="Template" 557.                Value="{StaticResource EditAppointmentTemplate}" /> 558.    </Style> 559.</UserControl.Resources> The first line there is the DataContextProxy I mentioned previously- we use that again to work a bit of magic in this template. Where we start getting into the dialog in question is line 132, but line 407 is where things start getting interesting.  The ItemsSource is pointing at a list that exists in my ViewModel (or code-behind, if it is used as a DataContext), the SelectedValue is the item I am actually binding from the applicant (note the TwoWay binding), and SelectedValuePath and DisplayMemberPath ensure the proper applicant is being displayed from the collection.  You will also see similar starting on line 420 where I do the same for the Jobs we'll be displaying. Just to wrap-up the Xaml, here's the RadScheduler declaraction that ties this all together and will be the main focus of our view: 01.<telerikScheduler:RadScheduler x:Name="xJobsScheduler" 02.                  Grid.Row="1" 03.                  Grid.Column="1" 04.                  Width="800" 05.                  MinWidth="600" 06.                  Height="500" 07.                  MinHeight="300" 08.                  AppointmentsSource="{Binding Interviews}" 09.                  EditAppointmentStyle="{StaticResource EditAppointmentStyle}" 10.                  command:AppointmentAddedEventClass.Command="{Binding AddAppointmentCommand}" 11.                  command:ApptCreatedEventClass.Command="{Binding ApptCreatingCommand}" 12.                  command:ApptEditedEventClass.Command="{Binding ApptEditedCommand}" 13.                  command:ApptDeletedEventClass.Command="{Binding ApptDeletedCommand}"> 14.</telerikScheduler:RadScheduler> Now, we get to the ViewModel and what it takes to get that rigged up.  And for those of you who remember the jobs post, those command:s in the Xaml are pointing to attached behavior commands that reproduce the respective events.  This becomes very handy when we're setting up the code-behind version. ;) ViewModel I've been liking this approach so far, so I'm going to put the entire ViewModel here and then go into the lines of interest.  Of course, feel free to ask me questions about anything that isn't clear (by line number, ideally) so I can help out if I have missed anything important: 001.public class SchedulerViewModel : ViewModelBase 002.{ 003.    private readonly IEventAggregator eventAggregator; 004.    private readonly IRegionManager regionManager; 005.   006.    public RecruitingContext context; 007.   008.    private ObservableItemCollection<InterviewAppointment> _interviews = new ObservableItemCollection<InterviewAppointment>(); 009.    public ObservableItemCollection<InterviewAppointment> Interviews 010.    { 011.        get { return _interviews; } 012.        set 013.        { 014.            if (_interviews != value) 015.            { 016.                _interviews = value; 017.                NotifyChanged("Interviews"); 018.            } 019.        } 020.    } 021.   022.    private QueryableCollectionView _jobsList; 023.    public QueryableCollectionView JobsList 024.    { 025.        get { return this._jobsList; } 026.        set 027.        { 028.            if (this._jobsList != value) 029.            { 030.                this._jobsList = value; 031.                this.NotifyChanged("JobsList"); 032.            } 033.        } 034.    } 035.   036.    private QueryableCollectionView _applicantList; 037.    public QueryableCollectionView ApplicantList 038.    { 039.        get { return _applicantList; } 040.        set 041.        { 042.            if (_applicantList != value) 043.            { 044.                _applicantList = value; 045.                NotifyChanged("ApplicantList"); 046.            } 047.        } 048.    } 049.   050.    public DelegateCommand<object> AddAppointmentCommand { get; set; } 051.    public DelegateCommand<object> ApptCreatingCommand { get; set; } 052.    public DelegateCommand<object> ApptEditedCommand { get; set; } 053.    public DelegateCommand<object> ApptDeletedCommand { get; set; } 054.   055.    public SchedulerViewModel(IEventAggregator eventAgg, IRegionManager regionmanager) 056.    { 057.        // set Unity items 058.        this.eventAggregator = eventAgg; 059.        this.regionManager = regionmanager; 060.   061.        // load our context 062.        context = new RecruitingContext(); 063.        LoadOperation<Interview> loadOp = context.Load(context.GetInterviewsQuery()); 064.        loadOp.Completed += new EventHandler(loadOp_Completed); 065.   066.        this._jobsList = new QueryableCollectionView(context.JobPostings); 067.        context.Load(context.GetJobPostingsQuery()); 068.   069.        this._applicantList = new QueryableCollectionView(context.Applicants); 070.        context.Load(context.GetApplicantsQuery()); 071.   072.        AddAppointmentCommand = new DelegateCommand<object>(this.AddAppt); 073.        ApptCreatingCommand = new DelegateCommand<object>(this.ApptCreating); 074.        ApptEditedCommand = new DelegateCommand<object>(this.ApptEdited); 075.        ApptDeletedCommand = new DelegateCommand<object>(this.ApptDeleted); 076.   077.    } 078.   079.    void loadOp_Completed(object sender, EventArgs e) 080.    { 081.        LoadOperation loadop = sender as LoadOperation; 082.   083.        foreach (var ent in loadop.Entities) 084.        { 085.            _interviews.Add(EntityToAppointment(ent as Interview)); 086.        } 087.    } 088.   089.    #region Appointment Adding 090.   091.    public void AddAppt(object obj) 092.    { 093.        // now we have a new InterviewAppointment to add to our QCV :) 094.        InterviewAppointment newInterview = obj as InterviewAppointment; 095.   096.        this.context.Interviews.Add(AppointmentToEntity(newInterview)); 097.        this.context.SubmitChanges((s) => 098.        { 099.            ActionHistory myAction = new ActionHistory(); 100.            myAction.InterviewID = newInterview.InterviewID; 101.            myAction.PostingID = newInterview.PostingID; 102.            myAction.ApplicantID = newInterview.ApplicantID; 103.            myAction.Description = String.Format("Interview with {0} has been created by {1}", newInterview.ApplicantID.ToString(), "default user"); 104.            myAction.TimeStamp = DateTime.Now; 105.            eventAggregator.GetEvent<AddActionEvent>().Publish(myAction); 106.        } 107.            , null); 108.    } 109.   110.    public void ApptCreating(object obj) 111.    { 112.        // handled in the behavior, just a placeholder to ensure it runs :) 113.    } 114.   115.    #endregion 116.   117.    #region Appointment Editing 118.   119.    public void ApptEdited(object obj) 120.    { 121.        Interview editedInterview = (from x in context.Interviews 122.                            where x.InterviewID == (obj as InterviewAppointment).InterviewID 123.                            select x).SingleOrDefault(); 124.   125.        CopyAppointmentEdit(editedInterview, obj as InterviewAppointment); 126.   127.        context.SubmitChanges((s) => { 128.            ActionHistory myAction = new ActionHistory(); 129.            myAction.InterviewID = editedInterview.InterviewID; 130.            myAction.PostingID = editedInterview.PostingID; 131.            myAction.ApplicantID = editedInterview.ApplicantID; 132.            myAction.Description = String.Format("Interview with {0} has been modified by {1}", editedInterview.ApplicantID.ToString(), "default user"); 133.            myAction.TimeStamp = DateTime.Now; 134.            eventAggregator.GetEvent<AddActionEvent>().Publish(myAction); } 135.            , null); 136.    } 137.   138.    #endregion 139.   140.    #region Appointment Deleting 141.   142.    public void ApptDeleted(object obj) 143.    { 144.        Interview deletedInterview = (from x in context.Interviews 145.                                      where x.InterviewID == (obj as InterviewAppointment).InterviewID 146.                                      select x).SingleOrDefault(); 147.   148.        context.Interviews.Remove(deletedInterview); 149.        context.SubmitChanges((s) => 150.        { 151.            ActionHistory myAction = new ActionHistory(); 152.            myAction.InterviewID = deletedInterview.InterviewID; 153.            myAction.PostingID = deletedInterview.PostingID; 154.            myAction.ApplicantID = deletedInterview.ApplicantID; 155.            myAction.Description = String.Format("Interview with {0} has been deleted by {1}", deletedInterview.ApplicantID.ToString(), "default user"); 156.            myAction.TimeStamp = DateTime.Now; 157.            eventAggregator.GetEvent<AddActionEvent>().Publish(myAction); 158.        } 159.            , null); 160.    } 161.   162.    #endregion 163.   164.    #region Appointment Helpers :) 165.   166.    public Interview AppointmentToEntity(InterviewAppointment ia) 167.    { 168.        Interview newInterview = new Interview(); 169.        newInterview.Subject = ia.Subject; 170.        newInterview.Body = ia.Body; 171.        newInterview.Start = ia.Start; 172.        newInterview.End = ia.End; 173.        newInterview.ApplicantID = ia.ApplicantID; 174.        newInterview.PostingID = ia.PostingID; 175.        newInterview.InterviewID = ia.InterviewID; 176.   177.        return newInterview; 178.    } 179.   180.    public InterviewAppointment EntityToAppointment(Interview ia) 181.    { 182.        InterviewAppointment newInterview = new InterviewAppointment(); 183.        newInterview.Subject = ia.Subject; 184.        newInterview.Body = ia.Body; 185.        newInterview.Start = ia.Start; 186.        newInterview.End = ia.End; 187.        newInterview.ApplicantID = ia.ApplicantID; 188.        newInterview.PostingID = ia.PostingID; 189.        newInterview.InterviewID = ia.InterviewID; 190.   191.        return newInterview; 192.    } 193.   194.    public void CopyAppointmentEdit(Interview entityInterview, InterviewAppointment appointmentInterview) 195.    { 196.        entityInterview.Subject = appointmentInterview.Subject; 197.        entityInterview.Body = appointmentInterview.Body; 198.        entityInterview.Start = appointmentInterview.Start; 199.        entityInterview.End = appointmentInterview.End; 200.        entityInterview.ApplicantID = appointmentInterview.ApplicantID; 201.        entityInterview.PostingID = appointmentInterview.PostingID; 202.    } 203.   204.    #endregion 205.} One thing we're doing here which you won't see in any of the other ViewModels is creating a duplicate collection.  I know this is something which will be fixed down the line for using RadScheduler, simplifying this process, but with WCF RIA changing as it does I wanted to ensure functionality would remain consistent as I continued development on this application.  So, I do a little bit of duplication, but for the greater good.  This all takes place starting on line 79, so for every entity that comes back we add it to the collection that is bound to RadScheduler.  Otherwise, the DelegateCommands that you see correspond directly to the events they are named after.  In each case, rather than sending over the full event arguments, I just send in the appointment in question (coming through as the object obj in all cases) so I can add (line 91), edit (line 119), and delete appointments (line 142) like normal.  This just ensures they get updated back to my database.  Also, the one bit of code you won't see is for the Appointment Creating (line 110) event- that is because in the command I've created I simply make the replacement I need to: 1.void element_AppointmentCreating(object sender, AppointmentCreatingEventArgs e) 2.{ 3.    e.NewAppointment = new InterviewAppointment(); 4.    base.ExecuteCommand(); 5.} And the ViewModel is none the wiser, the appointments just work as far as it is concerned since as they are created they become InterviewAppointments.  End result?  I've customized my EditAppointmentDialog as follows: And adding, editing, and deleting appointments works like a charm.  I can even 'edit' by moving appointments around RadScheduler, so as they are dropped into a timeslot they perform their full edit routine and things get updated. And then, the Code-Behind Version Perhaps the thing I like the most about doing one then the other is I get to steal 90% or more of the code from the MVVM version.  For example, the only real changes to the Code-Behind Xaml file exist in the control declaration, in which I use events instead of attached-behavior-event-commands: 01.<telerikScheduler:RadScheduler x:Name="xJobsScheduler" 02.                  Grid.Row="1" 03.                  Grid.Column="1" 04.                  Width="800" 05.                  MinWidth="600" 06.                  Height="500" 07.                  MinHeight="300" 08.                  EditAppointmentStyle="{StaticResource EditAppointmentStyle}" 09.                  AppointmentAdded="xJobsScheduler_AppointmentAdded" 10.                  AppointmentCreating="xJobsScheduler_AppointmentCreating" 11.                  AppointmentEdited="xJobsScheduler_AppointmentEdited" 12.                  AppointmentDeleted="xJobsScheduler_AppointmentDeleted"> 13.</telerikScheduler:RadScheduler> Easy, right?  Otherwise, all the same styling in UserControl.Resources was re-used, right down to the DataContextProxy that lets us bind to a collection from our viewmodel (in this case, our code-behind) to use within the DataTemplate.  The code conversion gets even easier, as I could literally copy and paste almost everything from the ViewModel to my Code-Behind, just a matter of pasting the right section into the right event.  Here's the code-behind as proof: 001.public partial class SchedulingView : UserControl, INotifyPropertyChanged 002.{ 003.    public RecruitingContext context; 004.   005.    private QueryableCollectionView _jobsList; 006.    public QueryableCollectionView JobsList 007.    { 008.        get { return this._jobsList; } 009.        set 010.        { 011.            if (this._jobsList != value) 012.            { 013.                this._jobsList = value; 014.                this.NotifyChanged("JobsList"); 015.            } 016.        } 017.    } 018.   019.    private QueryableCollectionView _applicantList; 020.    public QueryableCollectionView ApplicantList 021.    { 022.        get { return _applicantList; } 023.        set 024.        { 025.            if (_applicantList != value) 026.            { 027.                _applicantList = value; 028.                NotifyChanged("ApplicantList"); 029.            } 030.        } 031.    } 032.   033.    private ObservableItemCollection<InterviewAppointment> _interviews = new ObservableItemCollection<InterviewAppointment>(); 034.    public ObservableItemCollection<InterviewAppointment> Interviews 035.    { 036.        get { return _interviews; } 037.        set 038.        { 039.            if (_interviews != value) 040.            { 041.                _interviews = value; 042.                NotifyChanged("Interviews"); 043.            } 044.        } 045.    } 046.   047.    public SchedulingView() 048.    { 049.        InitializeComponent(); 050.   051.        this.DataContext = this; 052.   053.        this.Loaded += new RoutedEventHandler(SchedulingView_Loaded); 054.    } 055.   056.    void SchedulingView_Loaded(object sender, RoutedEventArgs e) 057.    { 058.        this.xJobsScheduler.AppointmentsSource = Interviews; 059.   060.        context = new RecruitingContext(); 061.           062.        LoadOperation loadop = context.Load(context.GetInterviewsQuery()); 063.        loadop.Completed += new EventHandler(loadop_Completed); 064.   065.        this._applicantList = new QueryableCollectionView(context.Applicants); 066.        context.Load(context.GetApplicantsQuery()); 067.   068.        this._jobsList = new QueryableCollectionView(context.JobPostings); 069.        context.Load(context.GetJobPostingsQuery()); 070.    } 071.   072.    void loadop_Completed(object sender, EventArgs e) 073.    { 074.        LoadOperation loadop = sender as LoadOperation; 075.   076.        _interviews.Clear(); 077.   078.        foreach (var ent in loadop.Entities) 079.        { 080.            _interviews.Add(EntityToAppointment(ent as Interview)); 081.        } 082.    } 083.   084.    private void xJobsScheduler_AppointmentAdded(object sender, Telerik.Windows.Controls.AppointmentAddedEventArgs e) 085.    { 086.        // now we have a new InterviewAppointment to add to our QCV :) 087.        InterviewAppointment newInterview = e.Appointment as InterviewAppointment; 088.   089.        this.context.Interviews.Add(AppointmentToEntity(newInterview)); 090.        this.context.SubmitChanges((s) => 091.        { 092.            ActionHistory myAction = new ActionHistory(); 093.            myAction.InterviewID = newInterview.InterviewID; 094.            myAction.PostingID = newInterview.PostingID; 095.            myAction.ApplicantID = newInterview.ApplicantID; 096.            myAction.Description = String.Format("Interview with {0} has been created by {1}", newInterview.ApplicantID.ToString(), "default user"); 097.            myAction.TimeStamp = DateTime.Now; 098.            context.ActionHistories.Add(myAction); 099.            context.SubmitChanges(); 100.        } 101.            , null); 102.    } 103.   104.    private void xJobsScheduler_AppointmentCreating(object sender, Telerik.Windows.Controls.AppointmentCreatingEventArgs e) 105.    { 106.        e.NewAppointment = new InterviewAppointment(); 107.    } 108.   109.    private void xJobsScheduler_AppointmentEdited(object sender, Telerik.Windows.Controls.AppointmentEditedEventArgs e) 110.    { 111.        Interview editedInterview = (from x in context.Interviews 112.                                     where x.InterviewID == (e.Appointment as InterviewAppointment).InterviewID 113.                                     select x).SingleOrDefault(); 114.   115.        CopyAppointmentEdit(editedInterview, e.Appointment as InterviewAppointment); 116.   117.        context.SubmitChanges((s) => 118.        { 119.            ActionHistory myAction = new ActionHistory(); 120.            myAction.InterviewID = editedInterview.InterviewID; 121.            myAction.PostingID = editedInterview.PostingID; 122.            myAction.ApplicantID = editedInterview.ApplicantID; 123.            myAction.Description = String.Format("Interview with {0} has been modified by {1}", editedInterview.ApplicantID.ToString(), "default user"); 124.            myAction.TimeStamp = DateTime.Now; 125.            context.ActionHistories.Add(myAction); 126.            context.SubmitChanges(); 127.        } 128.            , null); 129.    } 130.   131.    private void xJobsScheduler_AppointmentDeleted(object sender, Telerik.Windows.Controls.AppointmentDeletedEventArgs e) 132.    { 133.        Interview deletedInterview = (from x in context.Interviews 134.                                      where x.InterviewID == (e.Appointment as InterviewAppointment).InterviewID 135.                                      select x).SingleOrDefault(); 136.   137.        context.Interviews.Remove(deletedInterview); 138.        context.SubmitChanges((s) => 139.        { 140.            ActionHistory myAction = new ActionHistory(); 141.            myAction.InterviewID = deletedInterview.InterviewID; 142.            myAction.PostingID = deletedInterview.PostingID; 143.            myAction.ApplicantID = deletedInterview.ApplicantID; 144.            myAction.Description = String.Format("Interview with {0} has been deleted by {1}", deletedInterview.ApplicantID.ToString(), "default user"); 145.            myAction.TimeStamp = DateTime.Now; 146.            context.ActionHistories.Add(myAction); 147.            context.SubmitChanges(); 148.        } 149.            , null); 150.    } 151.   152.    #region Appointment Helpers :) 153.   154.    public Interview AppointmentToEntity(InterviewAppointment ia) 155.    { 156.        Interview newInterview = new Interview(); 157.        newInterview.Subject = ia.Subject; 158.        newInterview.Body = ia.Body; 159.        newInterview.Start = ia.Start; 160.        newInterview.End = ia.End; 161.        newInterview.ApplicantID = ia.ApplicantID; 162.        newInterview.PostingID = ia.PostingID; 163.        newInterview.InterviewID = ia.InterviewID; 164.   165.        return newInterview; 166.    } 167.   168.    public InterviewAppointment EntityToAppointment(Interview ia) 169.    { 170.        InterviewAppointment newInterview = new InterviewAppointment(); 171.        newInterview.Subject = ia.Subject; 172.        newInterview.Body = ia.Body; 173.        newInterview.Start = ia.Start; 174.        newInterview.End = ia.End; 175.        newInterview.ApplicantID = ia.ApplicantID; 176.        newInterview.PostingID = ia.PostingID; 177.        newInterview.InterviewID = ia.InterviewID; 178.   179.        return newInterview; 180.    } 181.   182.    public void CopyAppointmentEdit(Interview entityInterview, InterviewAppointment appointmentInterview) 183.    { 184.        entityInterview.Subject = appointmentInterview.Subject; 185.        entityInterview.Body = appointmentInterview.Body; 186.        entityInterview.Start = appointmentInterview.Start; 187.        entityInterview.End = appointmentInterview.End; 188.        entityInterview.ApplicantID = appointmentInterview.ApplicantID; 189.        entityInterview.PostingID = appointmentInterview.PostingID; 190.    } 191.   192.    #endregion 193.   194.    #region INotifyPropertyChanged Members 195.   196.    public event PropertyChangedEventHandler PropertyChanged; 197.   198.    public void NotifyChanged(string propertyName) 199.    { 200.        if (string.IsNullOrEmpty(propertyName)) 201.            throw new ArgumentException("propertyName"); 202.   203.        PropertyChanged(this, new PropertyChangedEventArgs(propertyName)); 204.    } 205.   206.    #endregion 207.} Nice... right? :) One really important thing to note as well.  See on line 51 where I set the DataContext before the Loaded event?  This is super important, as if you don't have this set before the usercontrol is loaded, the DataContextProxy has no context to use and your EditAppointmentDialog Job/Applicant dropdowns will be blank and empty.  Trust me on this, took a little bit of debugging to figure out that by setting the DataContext post-loaded would only lead to disaster and frustration.  Otherwise, the only other real difference is that instead of sending an ActionHistory item through an event to get added to the database and saved, I do those right in the callback from submitting.  The Result Again, I only have to post one picture because these bad boys used nearly identical code for both the MVVM and the code-behind views, so our end result is... So what have we learned here today?  One, for the most part this MVVM thing is somewhat easy.  Yeah, you sometimes have to write a bunch of extra code, but with the help of a few useful snippits you can turn the process into a pretty streamlined little workflow.  Heck, this story gets even easier as you can see in this blog post by Michael Washington- specifically run a find on 'InvokeCommandAction' and you'll see the section regarding the command on TreeView in Blend 4.  Brilliant!  MVVM never looked so sweet! Otherwise, it is business as usual with RadScheduler for Silverlight whichever path you're choosing for your development.  Between now and the next post, I'll be cleaning up styles a bit (those RadComboBoxes are a little too close to my labels!) and adding some to the RowDetailsViews for Applicants and Jobs, so you can see all the info for an appointment in the dropdown tab view.  Otherwise, we're about ready to call a wrap on this oneDid you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • SQL – NuoDB and Third Party Explorer – SQuirreL SQL Client, SQL Workbench/J and DbVisualizer

    - by Pinal Dave
    I recently wrote a four-part series on how I started to learn about and begin my journey with NuoDB. Big Data is indeed a big world and the learning of the Big Data is like spaghetti – no one knows in reality where to start, so I decided to learn it with the help of NuoDB. You can download NuoDB and continue your journey with me as well. Part 1 – Install NuoDB in 90 Seconds Part 2 – Manage NuoDB Installation Part 3 – Explore NuoDB Database Part 4 – Migrate from SQL Server to NuoDB …and in this blog post we will try to answer the most asked question about NuoDB. “I like the NuoDB Explorer but can I connect to NuoDB from my preferred Graphical User Interface?” Honestly, I did not expect this question to be asked of me so many times but from the question it is clear that we developers absolutely want to learn new things and along with that we do want to continue to use our most efficient developer tools. Now here is the answer to the question: “Absolutely, you can continue to use any of the following most popular SQL clients.” NuoDB supports the three most popular 3rd-party SQL clients. In all the leading development environments there are always more than one database installed and managing each of them with a different tool is often a very difficult task. Developers like to use one tool, which can control most of the databases. Once developers are familiar with one database tool it is very difficult for them to switch to another tool. This is particularly difficult when we developers find that tool to be the key reason for our efficiency. Let us see how to install each of the NuoDB supported 3rd party tools along with a quick tutorial on how to go about using them. SQuirreL SQL Client First download SQuirreL Universal SQL client. On the Windows platform you can double-click on the file and it will install the SQuirrel client. Once it is installed, open the application and it will bring up the following screen. Now go to the Drivers tab on the left side and scroll it down. You will find NuoDB mentioned there. Now right click over it and click on Modify Driver. Now here is where you need to make sure that you make proper entries or your client will not work with the database. Enter following values: Name: NuoDB Example URL: jdbc:com:nuodb://localhost:48004/test Website URL: http://www.nuodb.com Now click on the Extra Class Path tab and Add the location of the nuodbjdbc.jar file. If you are following my blog posts and have installed NuoDB in the default location, you will find the default path as C:\Program Files\NuoDB\jar\nuodbjdbc.jar. The class name of the driver is automatically populated. Once you click OK you will see that there is a small icon displayed to the left of NuoDB, which shows that you have successfully configured and installed the NuoDB driver. Now click on the tab of Alias tab and you can notice that it is empty. Now click on the big Plus icon and it will open screen of adding an alias. “Alias” means nothing more than adding a database to your system. The database name of the original installation can be anything and, if you wish, you can register the database with any other alternative name. Here are the details you should fill into the Alias screen below. Name: Test (or your preferred alias) Driver: NuoDB URL: jdbc:com:nuodb://localhost:48004/test (This is for test database) User Name: dba (This is the username which I entered for test Database) Password: goalie (This is the password which I entered for test Database) Check Auto Logon and Connect at Startup and click on OK. That’s it! You are done. On the right side you will see a table name and on the left side you will see various tabs with all the relevant details from respective table. You can see various metadata, schemas, data types and other information in the table. In addition, you can also generate script and do various important tasks related to database. You can see how easy it is to configure NuoDB with the SQuirreL Client and get going with it immediately. SQL Workbench/J This is another wonderful client tool, which works very well with NuoDB. The best part is that in the Driver dropdown you will see NuoDB being mentioned there. Click here to download  SQL Workbench/J Universal SQL client. The download process is straight forward and the installation is a very easy process for SQL Workbench/J. As soon as you open the client, you will notice on following screen the NuoDB driver when selecting a New Connection Profile. Select NuoDB from the drop down and click on OK. In the driver information, enter following details: Driver: NuoDB (com.nuodb.jdbc.Driver) URL: jdbc:com.nuodb://localhost/test Username: dba Password: goalie While clicking on OK, it will bring up the following pop-up. Click Yes to edit the driver information. Click on OK and it will bring you to following screen. This is the screen where you can perform various tasks. You can write any SQL query you want and it will instantly show you the results. Now click on the database icon, which you see right on the left side of the word User=dba.  Once you click on Database Explorer, you can perform various database related tasks. As a developer, one of my favorite tasks is to look at the source of the table as it gives me a proper view of the structure of the database. I find SQL Workbench/J very efficient in doing the same. DbVisualizer DBVisualizer is another great tool, which helps you to connect to NuoDB and retrieve database information in your desired format. A developer who is familiar with DBVisualizer will find this client to be very easy to work with. The installation of the DBVisualizer is very pretty straight forward. When we open the client, it will bring us to the following screen. As a first step we need to set up the driver. Go to Tools >> Driver Manager. It will bring up following screen where we set up the diver. Click on Create Driver and it will open up the driver settings on the right side. On the right side of the area where it displays Driver Settings please enter the following values- Name: NuoDB URL Format: jdbc:com.nuodb://localhost:48004/test Now under the driver path, click on the folder icon and it will ask for the location of the jar file. Provide the path as a C:\Program Files\NuoDB\jar\nuodbjdbc.jar and click OK. You will notice there is a green button displayed at the bottom right corner. This means the driver is configured properly. Once driver is configured properly, we can go to Create Database Connection and create a database. If the pop up show up for the Wizard. Click on No Wizard and continue to enter the settings manually. Here is the Database Connection screen. This screen can be bit tricky. Here are the settings you need to remember to enter. Name: NuoDB Database Type: Generic Driver: NuoDB Database URL: jdbc:com.nuodb://localhost:48004/test Database Userid: dba Database Password: goalie Once you enter the values, click on Connect. Once Connect is pressed, it will change the button value to Reconnect if the connection is successfully established and it will show the connection details on lthe eft side. When we further explore the NuoDB, we can see various tables created in our test application. We can further click on the right side screen and see various details on the table. If you click on the Data Tab, it will display the entire data of the table. The Tools menu also has some very interesting and cool features like Driver Manager, Data Monitor and SQL History. Summary Well, this was a relatively long post but I find it is extremely essential to cover all the three important clients, which we developers use in our daily database development. Here is my question to you? Which one of the following is your favorite NuoDB 3rd-Party Database Client? (Pick One) SQuirreL SQL Client SQL Workbench/J DbVisualizer I will be very much eager to read your experience about NuoDB. You can download NuoDB from here. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Big Data, PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology Tagged: NuoDB

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  • SQL SERVER – Introduction to SQL Server 2014 In-Memory OLTP

    - by Pinal Dave
    In SQL Server 2014 Microsoft has introduced a new database engine component called In-Memory OLTP aka project “Hekaton” which is fully integrated into the SQL Server Database Engine. It is optimized for OLTP workloads accessing memory resident data. In-memory OLTP helps us create memory optimized tables which in turn offer significant performance improvement for our typical OLTP workload. The main objective of memory optimized table is to ensure that highly transactional tables could live in memory and remain in memory forever without even losing out a single record. The most significant part is that it still supports majority of our Transact-SQL statement. Transact-SQL stored procedures can be compiled to machine code for further performance improvements on memory-optimized tables. This engine is designed to ensure higher concurrency and minimal blocking. In-Memory OLTP alleviates the issue of locking, using a new type of multi-version optimistic concurrency control. It also substantially reduces waiting for log writes by generating far less log data and needing fewer log writes. Points to remember Memory-optimized tables refer to tables using the new data structures and key words added as part of In-Memory OLTP. Disk-based tables refer to your normal tables which we used to create in SQL Server since its inception. These tables use a fixed size 8 KB pages that need to be read from and written to disk as a unit. Natively compiled stored procedures refer to an object Type which is new and is supported by in-memory OLTP engine which convert it into machine code, which can further improve the data access performance for memory –optimized tables. Natively compiled stored procedures can only reference memory-optimized tables, they can’t be used to reference any disk –based table. Interpreted Transact-SQL stored procedures, which is what SQL Server has always used. Cross-container transactions refer to transactions that reference both memory-optimized tables and disk-based tables. Interop refers to interpreted Transact-SQL that references memory-optimized tables. Using In-Memory OLTP In-Memory OLTP engine has been available as part of SQL Server 2014 since June 2013 CTPs. Installation of In-Memory OLTP is part of the SQL Server setup application. The In-Memory OLTP components can only be installed with a 64-bit edition of SQL Server 2014 hence they are not available with 32-bit editions. Creating Databases Any database that will store memory-optimized tables must have a MEMORY_OPTIMIZED_DATA filegroup. This filegroup is specifically designed to store the checkpoint files needed by SQL Server to recover the memory-optimized tables, and although the syntax for creating the filegroup is almost the same as for creating a regular filestream filegroup, it must also specify the option CONTAINS MEMORY_OPTIMIZED_DATA. Here is an example of a CREATE DATABASE statement for a database that can support memory-optimized tables: CREATE DATABASE InMemoryDB ON PRIMARY(NAME = [InMemoryDB_data], FILENAME = 'D:\data\InMemoryDB_data.mdf', size=500MB), FILEGROUP [SampleDB_mod_fg] CONTAINS MEMORY_OPTIMIZED_DATA (NAME = [InMemoryDB_mod_dir], FILENAME = 'S:\data\InMemoryDB_mod_dir'), (NAME = [InMemoryDB_mod_dir], FILENAME = 'R:\data\InMemoryDB_mod_dir') LOG ON (name = [SampleDB_log], Filename='L:\log\InMemoryDB_log.ldf', size=500MB) COLLATE Latin1_General_100_BIN2; Above example code creates files on three different drives (D:  S: and R:) for the data files and in memory storage so if you would like to run this code kindly change the drive and folder locations as per your convenience. Also notice that binary collation was specified as Windows (non-SQL). BIN2 collation is the only collation support at this point for any indexes on memory optimized tables. It is also possible to add a MEMORY_OPTIMIZED_DATA file group to an existing database, use the below command to achieve the same. ALTER DATABASE AdventureWorks2012 ADD FILEGROUP hekaton_mod CONTAINS MEMORY_OPTIMIZED_DATA; GO ALTER DATABASE AdventureWorks2012 ADD FILE (NAME='hekaton_mod', FILENAME='S:\data\hekaton_mod') TO FILEGROUP hekaton_mod; GO Creating Tables There is no major syntactical difference between creating a disk based table or a memory –optimized table but yes there are a few restrictions and a few new essential extensions. Essentially any memory-optimized table should use the MEMORY_OPTIMIZED = ON clause as shown in the Create Table query example. DURABILITY clause (SCHEMA_AND_DATA or SCHEMA_ONLY) Memory-optimized table should always be defined with a DURABILITY value which can be either SCHEMA_AND_DATA or  SCHEMA_ONLY the former being the default. A memory-optimized table defined with DURABILITY=SCHEMA_ONLY will not persist the data to disk which means the data durability is compromised whereas DURABILITY= SCHEMA_AND_DATA ensures that data is also persisted along with the schema. Indexing Memory Optimized Table A memory-optimized table must always have an index for all tables created with DURABILITY= SCHEMA_AND_DATA and this can be achieved by declaring a PRIMARY KEY Constraint at the time of creating a table. The following example shows a PRIMARY KEY index created as a HASH index, for which a bucket count must also be specified. CREATE TABLE Mem_Table ( [Name] VARCHAR(32) NOT NULL PRIMARY KEY NONCLUSTERED HASH WITH (BUCKET_COUNT = 100000), [City] VARCHAR(32) NULL, [State_Province] VARCHAR(32) NULL, [LastModified] DATETIME NOT NULL, ) WITH (MEMORY_OPTIMIZED = ON, DURABILITY = SCHEMA_AND_DATA); Now as you can see in the above query example we have used the clause MEMORY_OPTIMIZED = ON to make sure that it is considered as a memory optimized table and not just a normal table and also used the DURABILITY Clause= SCHEMA_AND_DATA which means it will persist data along with metadata and also you can notice this table has a PRIMARY KEY mentioned upfront which is also a mandatory clause for memory-optimized tables. We will talk more about HASH Indexes and BUCKET_COUNT in later articles on this topic which will be focusing more on Row and Index storage on Memory-Optimized tables. So stay tuned for that as well. Now as we covered the basics of Memory Optimized tables and understood the key things to remember while using memory optimized tables, let’s explore more using examples to understand the Performance gains using memory-optimized tables. I will be using the database which i created earlier in this article i.e. InMemoryDB in the below Demo Exercise. USE InMemoryDB GO -- Creating a disk based table CREATE TABLE dbo.Disktable ( Id INT IDENTITY, Name CHAR(40) ) GO CREATE NONCLUSTERED INDEX IX_ID ON dbo.Disktable (Id) GO -- Creating a memory optimized table with similar structure and DURABILITY = SCHEMA_AND_DATA CREATE TABLE dbo.Memorytable_durable ( Id INT NOT NULL PRIMARY KEY NONCLUSTERED Hash WITH (bucket_count =1000000), Name CHAR(40) ) WITH (MEMORY_OPTIMIZED = ON, DURABILITY = SCHEMA_AND_DATA) GO -- Creating an another memory optimized table with similar structure but DURABILITY = SCHEMA_Only CREATE TABLE dbo.Memorytable_nondurable ( Id INT NOT NULL PRIMARY KEY NONCLUSTERED Hash WITH (bucket_count =1000000), Name CHAR(40) ) WITH (MEMORY_OPTIMIZED = ON, DURABILITY = SCHEMA_only) GO -- Now insert 100000 records in dbo.Disktable and observe the Time Taken DECLARE @i_t bigint SET @i_t =1 WHILE @i_t<= 100000 BEGIN INSERT INTO dbo.Disktable(Name) VALUES('sachin' + CONVERT(VARCHAR,@i_t)) SET @i_t+=1 END -- Do the same inserts for Memory table dbo.Memorytable_durable and observe the Time Taken DECLARE @i_t bigint SET @i_t =1 WHILE @i_t<= 100000 BEGIN INSERT INTO dbo.Memorytable_durable VALUES(@i_t, 'sachin' + CONVERT(VARCHAR,@i_t)) SET @i_t+=1 END -- Now finally do the same inserts for Memory table dbo.Memorytable_nondurable and observe the Time Taken DECLARE @i_t bigint SET @i_t =1 WHILE @i_t<= 100000 BEGIN INSERT INTO dbo.Memorytable_nondurable VALUES(@i_t, 'sachin' + CONVERT(VARCHAR,@i_t)) SET @i_t+=1 END The above 3 Inserts took 1.20 minutes, 54 secs, and 2 secs respectively to insert 100000 records on my machine with 8 Gb RAM. This proves the point that memory-optimized tables can definitely help businesses achieve better performance for their highly transactional business table and memory- optimized tables with Durability SCHEMA_ONLY is even faster as it does not bother persisting its data to disk which makes it supremely fast. Koenig Solutions is one of the few organizations which offer IT training on SQL Server 2014 and all its updates. Now, I leave the decision on using memory_Optimized tables on you, I hope you like this article and it helped you understand  the fundamentals of IN-Memory OLTP . Reference: Pinal Dave (http://blog.sqlauthority.com)Filed under: PostADay, SQL, SQL Authority, SQL Performance, SQL Query, SQL Server, SQL Tips and Tricks, T SQL Tagged: Koenig

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  • CodePlex Daily Summary for Wednesday, February 23, 2011

    CodePlex Daily Summary for Wednesday, February 23, 2011Popular ReleasesSQL Server CLR Function for Address Correction and Geocoding: Release 2.1: Adds support for the User Key argument in Process function calls.ClosedXML - The easy way to OpenXML: ClosedXML 0.45.2: New on this release: 1) Added data validation. See Data Validation 2) Deleting or clearing cells deletes the hyperlinks too. New on v0.45.1 1) Fixed issues 6237, 6240 New on v0.45.2 1) Fixed issues 6257, 6266 New Examples Data ValidationCrystalbyte Equinox (LINQ to IMAP): Equinox Alpha Release v0.3.0.0: Fixed bugsFixed issue introduced in last release; No connection could be established since the client did not read the welcome message during the initial connection attempt. Contact names are now being properly parsed into the envelope Introduced featuresImplemented SMTP support, the client is contained inside the Crystalbyte.Equinox.Smtp.dll which was added to the current release.OMEGA CMS: OMEGA CMA - Alpha 0.2: A few fixes for OMEGA Framework (DLL) A few tweeks for OMEGA CMSJSLint for Visual Studio 2010: 1.2.4: Bug Fix release.Coding4Fun Tools: Coding4Fun.Phone.Toolkit v1.2: New control, Toast Prompt! Removed progress bar since Silverlight Toolkit Feb 2010 has it.Umbraco CMS: Umbraco 4.7: Service release fixing 31 issues. A full changelog will be available with the final stable release of 4.7 Important when upgradingUpgrade as if it was a patch release (update /bin, /umbraco and /umbraco_client). For general upgrade information follow the guide found at http://our.umbraco.org/wiki/install-and-setup/upgrading-an-umbraco-installation 4.7 requires the .NET 4.0 framework Web.Config changes Update the web web.config to include the 4 changes found in (they're clearly marked in...HubbleDotNet - Open source full-text search engine: V1.1.0.0: Add Sqlite3 DBAdapter Add App Report when Query Cache is Collecting. Improve the performance of index through Synchronize. Add top 0 feature so that we can only get count of the result. Improve the score calculating algorithm of match. Let the score of the record that match all items large then others. Add MySql DBAdapter Improve performance for multi-fields sort . Using hash table to access the Payload data. The version before used bin search. Using heap sort instead of qui...Silverlight????[???]: silverlight????[???]2.0: ???????,?????,????????silverlight????。DBSourceTools: DBSourceTools_1.3.0.0: Release 1.3.0.0 Changed editors from FireEdit to ICSharpCode.TextEditor. Complete re-vamp of Intellisense ( further testing needed). Hightlight Field and Table Names in sql scripts. Added field dropdown on all tables and views in DBExplorer. Added data option for viewing data in Tables. Fixed comment / uncomment bug as reported by tareq. Included Synonyms in scripting engine ( nickt_ch ).IronPython: 2.7 Release Candidate 1: We are pleased to announce the first Release Candidate for IronPython 2.7. This release contains over two dozen bugs fixed in preparation for 2.7 Final. See the release notes for 60193 for details and what has already been fixed in the earlier 2.7 prereleases. - IronPython TeamCaliburn Micro: A Micro-Framework for WPF, Silverlight and WP7: Caliburn.Micro 1.0 RC: This is the official Release Candicate for Caliburn.Micro 1.0. The download contains the binaries, samples and VS templates. VS Templates The templates included are designed for situations where the Caliburn.Micro source needs to be embedded within a single project solution. This was targeted at government and other organizations that expressed specific requirements around using an open source project like this. NuGet This release does not have a corresponding NuGet package. The NuGet pack...Caliburn: A Client Framework for WPF and Silverlight: Caliburn 2.0 RC: This is the official Release Candidate for Caliburn 2.0. It contains all binaries, samples and generated code docs.Chiave File Encryption: Chiave 0.9: Application for file encryption and decryption using 512 Bit rijndael encyrption algorithm with simple to use UI. Its written in C# and compiled in .Net version 3.5. It incorporates features of Windows 7 like Jumplists, Taskbar progress and Aero Glass. Feedbacks are Welcome!....Rawr: Rawr 4.0.20 Beta: Rawr is now web-based. The link to use Rawr4 is: http://elitistjerks.com/rawr.phpThis is the Cataclysm Beta Release. More details can be found at the following link http://rawr.codeplex.com/Thread/View.aspx?ThreadId=237262 As of the 4.0.16 release, you can now also begin using the new Downloadable WPF version of Rawr!This is a pre-alpha release of the WPF version, there are likely to be a lot of issues. If you have a problem, please follow the Posting Guidelines and put it into the Issue Trac...PowerGUI Visual Studio Extension: PowerGUI VSX 1.3.2: New FeaturesPowerGUI Console Tool Window PowerShell Project Type PowerGUI 2.4 SupportMiniTwitter: 1.66: MiniTwitter 1.66 ???? ?? ?????????? 2 ??????????????????? User Streams ?????????Windows Phone 7 Isolated Storage Explorer: WP7 Isolated Storage Explorer v1.0 Beta: Current release features:WPF desktop explorer client Visual Studio integrated tool window explorer client (Visual Studio 2010 Professional and above) Supported operations: Refresh (isolated storage information), Add Folder, Add Existing Item, Download File, Delete Folder, Delete File Explorer supports operations running on multiple remote applications at the same time Explorer detects application disconnect (1-2 second delay) Explorer confirms operation completed status Explorer d...Image.Viewer: 2011: First version of 2011Silverlight Toolkit: Silverlight for Windows Phone Toolkit - Feb 2011: Silverlight for Windows Phone Toolkit OverviewSilverlight for Windows Phone Toolkit offers developers additional controls for Windows Phone application development, designed to match the rich user experience of the Windows Phone 7. Suggestions? Features? Questions? Ask questions in the Create.msdn.com forum. Add bugs or feature requests to the Issue Tracker. Help us shape the Silverlight Toolkit with your feedback! Please clearly indicate that the work items and issues are for the phone t...New Projects.Net Dating & Social Software Suite: A free, open source dating and social software suite. Dot Net Dating Suite uses the latest features in .Net combined with experienced developers efforts. This allows us to deliver professional public SEO websites with the support of an enterprise enabled administration suite.AllegroSharp: Biblioteka zapewniajaca obsluge serwisu aukcyjnego Allegro.pl w oparciu o udostepniona publicznie usluge Allegro Web API.asdfasdfasdf: asdfasdfasdfauto: auto siteAWS Monitor: A web app utilizing the Amazon Web Services API with a focus on browsing through and analyzing data graphically, mostly from CloudWatch - the API providing metrics about the usage of all the Amazon Web Services such as EC2 (Cloud Computing) and ELB (Elastic Load Balancing).Calculation of FEM using DirectX Libraries: Calculation of FEM using DirectX LibrariesCART: System CART (Creative Application to Remedy Traffics) poprawi przepustowosc infrastruktury drogowej i plynnosci ruchu pojazdów w aglomeracjach miejskich. Chaining Assertion for MSTest: Chaining Assertion for MSTest. Simpleness Assert Extension Method on Object. This provides only one .cs file.CodeFirst Membership Provider: Custom Membership Provider based on SimpleMembershipProvider using Entity Framework Code-First, intended for use in ASP.NET MVC 3. Thanks to ASP.NET Web Pages team for building a simple membership provider :PFourSquareSharp: Simple OAuth2 Implementation of FourSquare API in .NETHelix Engine: The Helix Engine is an Isometric Rendering Engine for SilverlightLighthouse - Versatile Unit Test Runner for Silverlight: Lighthouse provides you with set of simple but powerful tools to run Silverlight Unit Tests from Command Line, Windows Test Runner Application and from Resharper plugin for Visual Studio.MISCE: Designs for a Minimal Instruction Set Computer for Education along with a simulator/compiler written in Excel. A computer "from first principles" that utilises a minimal instruction set and can be built for demonstration purposes as part of a technology or computing course. Oh My Log: Oh My Log inventorises eventlog files from Windows Servers in a network. Clean and simple sysadmin tool. OSIS Interop Tests: These are the tests created for use by the OSIS working group (http://osis.idcommons.net) to test interoperability features of user-centric solutions during interop events.Program Options: Parse command line optionsSearchable Property Updater for Microsoft Dynamics CRM 2011: Searchable Property Updater makes it easier for Microsoft Dynamics CRM 2011 customizers to bulk change the "Active for advanced find" property of entities attributesSilverlight Bolo: silverlight bolo cloneSimulacia a vizualizacia vlasov: simulacia a vizualizacia vlasov pomocou GPUSmartkernel: Smartkernel:Framework,Example,Platform,Tool,AppSusuCMS: SusuCMSSwimlanes for Scrum: Swimlanes Taskboard for Scrum Team Projects with TFS setup using SfTS (Scrum for Team System) V3 templateteamdoer: These are the actual source codes that power teamdoer.com - a simple collaborative task/project management software apptiencd: Tiencd projectVG Current Item Display Web Part: VG Current Item Display Web Part allows to display current SharePoint item metadata. For example if you put it on to the Web Part page or list item form it will display the custom view of the current item properties. Output is easily customized with XSLT file.Virtual Interactive Shopper: Addin for SeeMe Rehabilitation System. More information about the SeeMe system can be found at http://www.brontesprocessing.com/health/SeeMeVisual Studio Strategy Manager: Provide a way to create code generation strategies and to manage them in Visual Studio 2010. Strategies can interact with Visual Studio events like document events (saved, closed, opened), building event or DSL Tools events (model element created, deleted, modified..).VMarket: <project name>VMarket</project name> <programming language>asp.net</programming language> <project description> VMarket is virtual market systems which allow users to act as seller or buyer and manage their property online </project description>webclerk: webclerk's project based on microsoft techWebTest: Just Test!Work efficiency (WE) ????????: Work efficiency ???????? ????: ???? ????zrift: nothing here, move along

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  • CodePlex Daily Summary for Monday, April 26, 2010

    CodePlex Daily Summary for Monday, April 26, 2010New Projects.Net 4.0 WPF Twitter Client: A .Net 4.0 Twitter client application built in WPF using PrismAop 权限管理 license授权: 授权管理 Aop应用asp.mvc example with ajax: asp.mvc example with ajaxBojinx: Flex 4 Framework and Management utilities IOC Container Flexible and powerful event management and handling Create your own Processors and Annotat...Browser Gallese: Il Browser Gallese serve per andare in internet quasi SICURO e GratiseaaCaletti: 2. Semester project @ ÅrhusEnki Char 2 BIN: A program that converts characters to binary and vice versaFsGame: A wrapper over xna to improve its usage from F#jouba Images Converter: Convert piles of images to all key formats at one go! Make quick adjustments - resize, rotate. Get your pictures ready to be printed or uploaded to...MVC2 RESTful Library: A RESTFul Library using ASP.NET MVC 2.0My Schedule Tool: Schedule can be used to create simple or complex schedules for executing tens. NAntDefineTasks: NAnt Define Tasks allows you to define NAnt tasks in terms of other NAnt tasks, instead of having to write any C# code. PowerShell Admin Modules: PAM supplies a number of PowerShell modules satisfying the needs of Windows administrators. By pulling together functions for adminsitering files a...Search Youtube Direct: Another project By URPROB This is a sample application that take search videos from youtube. The videos are shown with different attributes catagor...Simple Site Template: Simple Site Template 一个为了方便网站项目框架模板~Slaff's demo project: this is my demo projectSSIS Credit Card Number Validator 08 (CCNV08): Credit Card Number Validator 08 (CCNV08) is a Custom SSIS Data Flow Transformation Component for SQL Server 2008 that determines whether the given ...Su-Lekhan: Su-Lekhan is lite weight source code editor with refactoring support which is extensible to multiple languagesV-Data: V-Data es una herramienta de calidad de datos (Data Quality) que mejora considerablemente la calidad de la información disponible en cualquier sist...zy26: zy26 was here...New ReleasesActive Directory User Properties Change: Source Code v 1.0: Full Source Code + Database Creation SQL Script You need to change some values in web.config and DataAccess.vb. Hope you will get the most benefit!!Bojinx: Bojinx Core V4.5: V 4.5 Stable buildBrowser Gallese: Browser 1.0.0.9: Il Browser Gallese va su internet veloce,gratis e Sicuro dalla nascita Su questo sito ci sono i fle d'istallazione e il codice sorgente scritti con...CSS 360 Planetary Calendar: LCO: Documents for the LCO MilestoneGArphics: Backgrounds: GArphics examples converted into PNG-images with a resolution of 1680x1050.GArphics: Beta v0.8: Beta v0.8. Includes built-in examples and a lot of new settings.Helium Frog Animator: Helium Frog Flow Diagram: This file contains a flow diagram showing how the program functions. The image is in .bmp format.Highlighterr for Visual C++ 2010: Highlighterr for Visual C++ 2010 Test Release: Seems I'm updating this on a daily basis now, I keep finding things to add/fix. So stay tuned for updates! Current Version: 1.02 Now picks up chan...HTML Ruby: 6.22.2: Slightly improved performance on inserted ruby Cleaned up the code someiTuner - The iTunes Companion: iTuner 1.2.3767 Beta 3: Beta 3 is requires iTunes 9.1.0.79 or later A Librarian status panel showing active and queued Librarian scanners. This will be hidden behind the ...Jet Login Tool (JetLoginTool): Logout - 1.5.3765.28026: Changed: Will logout from Jet if the "Stop" button is hit Fixed: Bug where A notification is received that the engine has stopped, but it hasn't ...jouba Images Converter: Release: The first beta release for Images ConverterKeep Focused - an enhanced tool for Time Management using Pomodoro Technique: Release 0.3 Alpha: Release Notes (Release 0.3 Alpha) The alpha preview provides the basic functionality used by the Pomodoro Technique. Files 1. Keep Focused Exe...Mercurial to Team Foundation Server Work Item Hook: Version 0.2: Changes Include: Eliminates the need for the Suds package by hand-rolling its own soap implementation Ability to specify columns and computed col...Mews: Mews.Application V0.8: Installation InstuctionsNew Features16569 16571 Fixed Issues16668 Missing Features16567 Known Remaining IssuesLarge text-only articles require la...MiniTwitter: 1.12: MiniTwitter 1.12 更新内容 注意 このバージョンは開発中につき、正式リリースまでに複数回更新されることがあります。 また不安定かもしれませんので、新機能を試したいという方以外には 1.11 をお勧めします。 追加 List 機能に仮対応 タイムラインの振り分け条件として...Multiwfn: multiwfn1.3.1_binary: multiwfn1.3.1_binaryMultiwfn: multiwfn1.3.1_source: multiwfn1.3.1_sourceMVC2 RESTful Library: Source Code: VS2010 Source CodeMy Schedule Tool: MyScheduleTool 0.1: Initial version for MyScheduleTool. If you have any comments about the project, please let me know. My email is cmicmobile@gmail.comNestoria.NET: Nestoria.NET 0.8.1: Provides access to the Nestoria API. Documentation contains a basic getting started guide. Please visit Darren Edge's blog for ongoing developmen...OgmoXNA: OgmoXNA Binaries: Binary release libraries for OgmoXNA and OgmoXNA content pipeline extensions. Includes both Windows and Xbox360 binaries in separate directories.OgmoXNA: OgmoXNA Source: NOTE: THE ASSETS PROVIDED IN THE DEMO GAME DISTRIBUTED WITH THIS SOURCE ARE PROPERTY OF MATT THORSON, AND ARE NOT TO BE USED FOR ANY OTHER PROJECT...PokeIn Comet Ajax Library: PokeIn v07 x64: New FeaturesInstant Client Disconnected Detection Disable Server Push Technology OptionPokeIn Comet Ajax Library: PokeIn v07 x86: New FeaturesInstant Client Disconnected Detection Disable Server Push Technology OptionPowerShell Admin Modules: PAM 0.1: Version 0.1 includes share moduleRehost Image: 1.3.8: Added option to remove resolution/size text from the thumbnails of uploaded images in ImageShack. Fixed issue with FTP servers that give back jun...Site Directory for SharePoint 2010 (from Microsoft Consulting Services, UK): v1.3: Same as v1.2 with the following changes: Source Code and WSP updated to SharePoint 2010 and Visual Studio 2010 RTM releases Fields seperated into...SSIS Credit Card Number Validator 08 (CCNV08): CCNV08-1004Apr-R1: Version Released in Apr 2010SSIS Twitter Suite: v2.0: Upgraded Twitter Task to SSIS 2008sTASKedit: sTASKedit v0.7 Alpha: Features:Import of v56 (CN 1.3.6 v101) and v79 (PWI 1.4.2 v312) tasks.data files Export to v56 (Client) and v55 (Server) Clone & Delete Tasks ...StyleCop for ReSharper: StyleCop for ReSharper 5.0.14724.1: StyleCop for ReSharper 5.0.14724.1 =============== StyleCop 4.3.3.0 ReSharper 5.0.1659.36 Visual Studio 2008 / Visual Studio 2010 Fixes === G...Windows Live ID SSO Luminis Integration: Version 1.2: This new version has been updated for accomodating the new release of the Windows Live SSO Toolkit v4.2.WPF Application Framework (WAF): WPF Application Framework (WAF) 1.0.0.11: Version: 1.0.0.11 (Milestone 11): This release contains the source code of the WPF Application Framework (WAF) and the sample applications. Requi...XAML Code Snippets addin for Visual Studio 2010: Release for VS 2010 RTM: Release built for Visual Studio 2010 RTMXP-More: 1.0: Release Notes Improved VM folder recognition Added About window Added input validation and exception handling If exist, vud and vpcbackupfile...Most Popular ProjectsRawrWBFS ManagerAJAX Control ToolkitSilverlight ToolkitMicrosoft SQL Server Product Samples: Databasepatterns & practices – Enterprise LibraryWindows Presentation Foundation (WPF)ASP.NETMicrosoft SQL Server Community & SamplesPHPExcelMost Active Projectspatterns & practices – Enterprise LibraryRawrGMap.NET - Great Maps for Windows Forms & PresentationBlogEngine.NETParticle Plot PivotNB_Store - Free DotNetNuke Ecommerce Catalog ModuleDotNetZip LibraryFarseer Physics EngineN2 CMSpatterns & practices: Composite WPF and Silverlight

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  • Option Trading: Getting the most out of the event session options

    - by extended_events
    You can control different aspects of how an event session behaves by setting the event session options as part of the CREATE EVENT SESSION DDL. The default settings for the event session options are designed to handle most of the common event collection situations so I generally recommend that you just use the defaults. Like everything in the real world though, there are going to be a handful of “special cases” that require something different. This post focuses on identifying the special cases and the correct use of the options to accommodate those cases. There is a reason it’s called Default The default session options specify a total event buffer size of 4 MB with a 30 second latency. Translating this into human terms; this means that our default behavior is that the system will start processing events from the event buffer when we reach about 1.3 MB of events or after 30 seconds, which ever comes first. Aside: What’s up with the 1.3 MB, I thought you said the buffer was 4 MB?The Extended Events engine takes the total buffer size specified by MAX_MEMORY (4MB by default) and divides it into 3 equally sized buffers. This is done so that a session can be publishing events to one buffer while other buffers are being processed. There are always at least three buffers; how to get more than three is covered later. Using this configuration, the Extended Events engine can “keep up” with most event sessions on standard workloads. Why is this? The fact is that most events are small, really small; on the order of a couple hundred bytes. Even when you start considering events that carry dynamically sized data (eg. binary, text, etc.) or adding actions that collect additional data, the total size of the event is still likely to be pretty small. This means that each buffer can likely hold thousands of events before it has to be processed. When the event buffers are finally processed there is an economy of scale achieved since most targets support bulk processing of the events so they are processed at the buffer level rather than the individual event level. When all this is working together it’s more likely that a full buffer will be processed and put back into the ready queue before the remaining buffers (remember, there are at least three) are full. I know what you’re going to say: “My server is exceptional! My workload is so massive it defies categorization!” OK, maybe you weren’t going to say that exactly, but you were probably thinking it. The point is that there are situations that won’t be covered by the Default, but that’s a good place to start and this post assumes you’ve started there so that you have something to look at in order to determine if you do have a special case that needs different settings. So let’s get to the special cases… What event just fired?! How about now?! Now?! If you believe the commercial adage from Heinz Ketchup (Heinz Slow Good Ketchup ad on You Tube), some things are worth the wait. This is not a belief held by most DBAs, particularly DBAs who are looking for an answer to a troubleshooting question fast. If you’re one of these anxious DBAs, or maybe just a Program Manager doing a demo, then 30 seconds might be longer than you’re comfortable waiting. If you find yourself in this situation then consider changing the MAX_DISPATCH_LATENCY option for your event session. This option will force the event buffers to be processed based on your time schedule. This option only makes sense for the asynchronous targets since those are the ones where we allow events to build up in the event buffer – if you’re using one of the synchronous targets this option isn’t relevant. Avoid forgotten events by increasing your memory Have you ever had one of those days where you keep forgetting things? That can happen in Extended Events too; we call it dropped events. In order to optimizes for server performance and help ensure that the Extended Events doesn’t block the server if to drop events that can’t be published to a buffer because the buffer is full. You can determine if events are being dropped from a session by querying the dm_xe_sessions DMV and looking at the dropped_event_count field. Aside: Should you care if you’re dropping events?Maybe not – think about why you’re collecting data in the first place and whether you’re really going to miss a few dropped events. For example, if you’re collecting query duration stats over thousands of executions of a query it won’t make a huge difference to miss a couple executions. Use your best judgment. If you find that your session is dropping events it means that the event buffer is not large enough to handle the volume of events that are being published. There are two ways to address this problem. First, you could collect fewer events – examine you session to see if you are over collecting. Do you need all the actions you’ve specified? Could you apply a predicate to be more specific about when you fire the event? Assuming the session is defined correctly, the next option is to change the MAX_MEMORY option to a larger number. Picking the right event buffer size might take some trial and error, but a good place to start is with the number of dropped events compared to the number you’ve collected. Aside: There are three different behaviors for dropping events that you specify using the EVENT_RETENTION_MODE option. The default is to allow single event loss and you should stick with this setting since it is the best choice for keeping the impact on server performance low.You’ll be tempted to use the setting to not lose any events (NO_EVENT_LOSS) – resist this urge since it can result in blocking on the server. If you’re worried that you’re losing events you should be increasing your event buffer memory as described in this section. Some events are too big to fail A less common reason for dropping an event is when an event is so large that it can’t fit into the event buffer. Even though most events are going to be small, you might find a condition that occasionally generates a very large event. You can determine if your session is dropping large events by looking at the dm_xe_sessions DMV once again, this time check the largest_event_dropped_size. If this value is larger than the size of your event buffer [remember, the size of your event buffer, by default, is max_memory / 3] then you need a large event buffer. To specify a large event buffer you set the MAX_EVENT_SIZE option to a value large enough to fit the largest event dropped based on data from the DMV. When you set this option the Extended Events engine will create two buffers of this size to accommodate these large events. As an added bonus (no extra charge) the large event buffer will also be used to store normal events in the cases where the normal event buffers are all full and waiting to be processed. (Note: This is just a side-effect, not the intended use. If you’re dropping many normal events then you should increase your normal event buffer size.) Partitioning: moving your events to a sub-division Earlier I alluded to the fact that you can configure your event session to use more than the standard three event buffers – this is called partitioning and is controlled by the MEMORY_PARTITION_MODE option. The result of setting this option is fairly easy to explain, but knowing when to use it is a bit more art than science. First the science… You can configure partitioning in three ways: None, Per NUMA Node & Per CPU. This specifies the location where sets of event buffers are created with fairly obvious implication. There are rules we follow for sub-dividing the total memory (specified by MAX_MEMORY) between all the event buffers that are specific to the mode used: None: 3 buffers (fixed)Node: 3 * number_of_nodesCPU: 2.5 * number_of_cpus Here are some examples of what this means for different Node/CPU counts: Configuration None Node CPU 2 CPUs, 1 Node 3 buffers 3 buffers 5 buffers 6 CPUs, 2 Node 3 buffers 6 buffers 15 buffers 40 CPUs, 5 Nodes 3 buffers 15 buffers 100 buffers   Aside: Buffer size on multi-processor computersAs the number of Nodes or CPUs increases, the size of the event buffer gets smaller because the total memory is sub-divided into more pieces. The defaults will hold up to this for a while since each buffer set is holding events only from the Node or CPU that it is associated with, but at some point the buffers will get too small and you’ll either see events being dropped or you’ll get an error when you create your session because you’re below the minimum buffer size. Increase the MAX_MEMORY setting to an appropriate number for the configuration. The most likely reason to start partitioning is going to be related to performance. If you notice that running an event session is impacting the performance of your server beyond a reasonably expected level [Yes, there is a reasonably expected level of work required to collect events.] then partitioning might be an answer. Before you partition you might want to check a few other things: Is your event retention set to NO_EVENT_LOSS and causing blocking? (I told you not to do this.) Consider changing your event loss mode or increasing memory. Are you over collecting and causing more work than necessary? Consider adding predicates to events or removing unnecessary events and actions from your session. Are you writing the file target to the same slow disk that you use for TempDB and your other high activity databases? <kidding> <not really> It’s always worth considering the end to end picture – if you’re writing events to a file you can be impacted by I/O, network; all the usual stuff. Assuming you’ve ruled out the obvious (and not so obvious) issues, there are performance conditions that will be addressed by partitioning. For example, it’s possible to have a successful event session (eg. no dropped events) but still see a performance impact because you have many CPUs all attempting to write to the same free buffer and having to wait in line to finish their work. This is a case where partitioning would relieve the contention between the different CPUs and likely reduce the performance impact cause by the event session. There is no DMV you can check to find these conditions – sorry – that’s where the art comes in. This is  largely a matter of experimentation. On the bright side you probably won’t need to to worry about this level of detail all that often. The performance impact of Extended Events is significantly lower than what you may be used to with SQL Trace. You will likely only care about the impact if you are trying to set up a long running event session that will be part of your everyday workload – sessions used for short term troubleshooting will likely fall into the “reasonably expected impact” category. Hey buddy – I think you forgot something OK, there are two options I didn’t cover: STARTUP_STATE & TRACK_CAUSALITY. If you want your event sessions to start automatically when the server starts, set the STARTUP_STATE option to ON. (Now there is only one option I didn’t cover.) I’m going to leave causality for another post since it’s not really related to session behavior, it’s more about event analysis. - Mike Share this post: email it! | bookmark it! | digg it! | reddit! | kick it! | live it!

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