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• Java EE/GlassFish Adoption Story by Kerry Wilson/Vanderbilt University

  - by reza_rahman

  Kerry Wilson is a Software Engineer at the Vanderbilt University Medical Center. He served in a consultant role to design a lightweight systems integration solution for the next generation Foundations Recovery Network using GlassFish, Java EE 6, JPA, @Scheduled EJBs, CDI, JAX-RS and JSF. He lives in Nashville, TN where he helps organize the Nashville Java User Group. Kerry shared his Java EE/GlassFish adoption story at the JavaOne 2013 Sunday GlassFish community event - check out the video below: Here is the slide deck for his talk: GlassFish Story by Kerry Wilson/Vanderbilt University Medical Center from glassfish Kerry outlined some of the details of the implementation and emphasized the fact that Java EE can be a great solution for applications that are considered small/lightweight. He mentioned the productivity gains through the modern Java EE programming model centered on annotations, POJOs and zero-configuration - comparing it with competing frameworks that aim towards similar productivity for lightweight applications. Kerry also stressed the quality of the excellent NetBeans integration with GlassFish and the need for community self-support in free, non-commercial open source projects like GlassFish.

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• Intro On AppFabric on EndPoint.tv (Steve & Danny)

  - by Benny Mathew

  http://channel9.msdn.com/shows/Endpoint/endpointtv-Pro-Windows-Server-AppFabric/   Here is a nice intro to Windows Server Appfabric by a good friend and colleague Steve and Danny.Cutting through all the hype and misunderstandings especially between AppFabric in the Cloud vs. Windows Server AppFabric. Also on when to position BizTalk versus Windows Server AppFabric.

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• Java EE/GlassFish Adoption Story by Kerry Wilson/Vanderbilt University

  - by reza_rahman

  Kerry Wilson is a Software Engineer at the Vanderbilt University Medical Center. He served in a consultant role to design a lightweight systems integration solution for the next generation Foundations Recovery Network using GlassFish, Java EE 6, JPA, @Scheduled EJBs, CDI, JAX-RS and JSF. He shared his story at the JavaOne 2013 Sunday GlassFish community event - check out the video below: Kerry outlined some of the details of the implementation and emphasized the fact that Java EE can be a great solution for applications that are considered small/lightweight. He mentioned the productivity gains through the modern Java EE programming model centered on annotations, POJOs and zero-configuration - comparing it with competing frameworks that aim towards similar productivity for lightweight applications. Kerry also stressed the quality of the excellent NetBeans integration with GlassFish and the need for community self-support in free, non-commercial open source projects like GlassFish. You can check out the details of his story on the GlassFish stories blog. Do you have a Java EE/GlassFish adoption story to share? Let us know and we will highlight it for the community.

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• CEO Is the New CRM

  - by andrea.mulder

  Danny Rippon launched his blogging career last week with The Marketer outlining how CRM has evolved from managing customer data to 'CEM' - Customer Experience Management, and for true market leaders it is moving towards 'CEO' - Customer Experience Optimisation. Or as we like to say here in the states Customer Experience Optimization (with a "z"). Click here to hear Danny's thought on why CEO Is the New CRM.

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• Oracle on iPad

  - by Aaron Lazenby

  This came across the Twitter-sphere from Steve Wilson (aka @virtualsteve), Oracle Vice President, Systems management:"One of the engineers on the Ops Center team just sent me a pic of OC running on an iPad. Neat!"And here's proof:

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• No Alias's when sudo'ing

  - by Danny Roberts

  I was playing around with aliases today and I noticed that aliases don't seem to be available whilst using sudo: danny@kaon:~$ alias alias egrep='egrep --color=auto' alias fgrep='fgrep --color=auto' alias grep='grep --color=auto' alias l='ls -CF' alias la='ls -A' alias ll='ls -alF' alias ls='ls --color=auto' danny@kaon:~$ ll -d / drwxr-xr-x 23 root root 4096 2011-01-06 20:29 // danny@kaon:~$ sudo -i root@kaon:~# ll -d / drwxr-xr-x 23 root root 4096 2011-01-06 20:29 // root@kaon:~# exit logout danny@kaon:~$ sudo ll -d / sudo: ll: command not found Is there any reason why you cannot use aliases whilst using sudo?

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• Aliases not available when using sudo

  - by Danny Roberts

  I was playing around with aliases today and I noticed that aliases don't seem to be available whilst using sudo: danny@kaon:~$ alias alias egrep='egrep --color=auto' alias fgrep='fgrep --color=auto' alias grep='grep --color=auto' alias l='ls -CF' alias la='ls -A' alias ll='ls -alF' alias ls='ls --color=auto' danny@kaon:~$ ll -d / drwxr-xr-x 23 root root 4096 2011-01-06 20:29 // danny@kaon:~$ sudo -i root@kaon:~# ll -d / drwxr-xr-x 23 root root 4096 2011-01-06 20:29 // root@kaon:~# exit logout danny@kaon:~$ sudo ll -d / sudo: ll: command not found Is there any reason why you cannot use aliases whilst using sudo?

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• Le Web serait-il en danger face à la montée en puissance du mobile ? Pour l'écrivain et chercheur Danny Crichton, le « Web est en train de mourir »

  Le web serait-il en danger face à la montée en puissance du mobile ? Les applications natives plus plébiscitées sur mobileLe web serait-il en danger face à la montée en puissance du mobile ? Oui, pour le chercheur et écrivain Danny Crichton, pour qui le web se meurt lentement et surement à l'aube de son 25e anniversaire.Tout d'abord, il est important de définir le web, qui représente « une collection de protocoles (HTP) et de langages (HTML) qui permet à l'utilisateur de produire et de consommer...

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• PHP: Can pcntl_alarm() and socket_select() peacefully exist in the same thread?

  - by DWilliams

  I have a PHP CLI script mostly written that functions as a chat server for chat clients to connect to (don't ask me why I'm doing it in PHP, thats another story haha). My script utilizes the socket_select() function to hang execution until something happens on a socket, at which point it wakes up, processes the event, and waits until the next event. Now, there are some routine tasks that I need performed every 30 seconds or so (check of tempbanned users should be unbanned, save user databases, other assorted things). From what I can tell, PHP doesn't have very great multi-threading support at all. My first thought was to compare a timestamp every time the socket generates an event and gets the program flowing again, but this is very inconsistent since the server could very well sit idle for hours and not have any of my cleanup routines executed. I came across the PHP pcntl extensions, and it lets me use assign a time interval for SIGALRM to get sent and a function get executed every time it's sent. This seems like the ideal solution to my problem, however pcntl_alarm() and socket_select() clash with each other pretty bad. Every time SIGALRM is triggered, all sorts of crazy things happen to my socket control code. My program is fairly lengthy so I can't post it all here, but it shouldn't matter since I don't believe I'm doing anything wrong code-wise. My question is: Is there any way for a SIGALRM to be handled in the same thread as a waiting socket_select()? If so, how? If not, what are my alternatives here? Here's some output from my program. My alarm function simply outputs "Tick!" whenever it's called to make it easy to tell when stuff is happening. This is the output (including errors) after allowing it to tick 4 times (there were no actual attempts at connecting to the server despite what it says): [05-28-10 @ 20:01:05] Chat server started on 192.168.1.28 port 4050 [05-28-10 @ 20:01:05] Loaded 2 users from file PHP Notice: Undefined offset: 0 in /home/danny/projects/PHPChatServ/ChatServ.php on line 112 PHP Warning: socket_select(): unable to select [4]: Interrupted system call in /home/danny/projects/PHPChatServ/ChatServ.php on line 116 [05-28-10 @ 20:01:15] Tick! PHP Warning: socket_accept(): unable to accept incoming connection [4]: Interrupted system call in /home/danny/projects/PHPChatServ/ChatServ.php on line 126 [05-28-10 @ 20:01:25] Tick! PHP Warning: socket_getpeername() expects parameter 1 to be resource, boolean given in /home/danny/projects/PHPChatServ/ChatServ.php on line 129 [05-28-10 @ 20:01:25] Accepting socket connection from PHP Notice: Undefined offset: 1 in /home/danny/projects/PHPChatServ/ChatServ.php on line 112 PHP Warning: socket_select(): unable to select [4]: Interrupted system call in /home/danny/projects/PHPChatServ/ChatServ.php on line 116 [05-28-10 @ 20:01:35] Tick! PHP Warning: socket_accept(): unable to accept incoming connection [4]: Interrupted system call in /home/danny/projects/PHPChatServ/ChatServ.php on line 126 [05-28-10 @ 20:01:45] Tick! PHP Warning: socket_getpeername() expects parameter 1 to be resource, boolean given in /home/danny/projects/PHPChatServ/ChatServ.php on line 129 [05-28-10 @ 20:01:45] Accepting socket connection from PHP Notice: Undefined offset: 2 in /home/danny/projects/PHPChatServ/ChatServ.php on line 112

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• OS X Keeps prompting me for SSH private key passphrase (OS X 10.6.8)

  - by Danny Englander

  I have a private key to ssh into my server and the connection works. In my hosts file I have: Host myhost HostName xxx.xxx.xxx.xx GlobalKnownHostsFile ~/.ssh/known_hosts port 22 User myuser IdentityFile ~/.ssh/mykey_dsa IdentitiesOnly yes .. and then I type ssh myhost Every time I connect, I get the Mac OS X keychain prompt and I tell OS X to remember the passphrase but then when I disconnect from ssh and re-connect, I am prompted to add the passphrase to the keychain again. This is only a recent problem so I suspect and issue with Keychain? To be clear, I can 're-add' to keychain every time and connect but this defats the purpose. The permissions on my dsa key are set at 600 or -rw-------@ I tried repairing disk permissions but that did no good. My Google-foo is also failing me, nothing of use came up. So I am not sure if this an OS X / keychain issue or an SSH issue. update: When I try ssh -vvv myhost, I think it reveals the issue: debug1: Trying private key: /Users/danny/.ssh/mykey_dsa debug1: PEM_read_PrivateKey failed debug1: read PEM private key done: type <unknown> debug3: Not a RSA1 key file /Users/danny/.ssh/mykey_dsa. debug1: read PEM private key done: type DSA Identity added: /Users/danny/.ssh/mykey_dsa (/Users/danny/.ssh/mykey_dsa) debug1: read PEM private key done: type DSA debug3: sign_and_send_pubkey debug2: we sent a publickey packet, wait for reply debug1: Authentication succeeded (publickey). ... and after that I get connected. I think this crux of the matter is: PEM_read_PrivateKey failed

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• Disk space suddenly 100% used?

  - by dannymcc

  I'm trying to identify why, suddenly, 100% of our disk space is in use. I have already rebooted but the issue persists. Here are the outputs of some commands that are showing some strange (for me) results: danny@hydrogen:~$ df -h Filesystem Size Used Avail Use% Mounted on /dev/cciss/c0d0p1 130G 122G 949M 100% / none 1.9G 196K 1.9G 1% /dev none 2.0G 0 2.0G 0% /dev/shm none 2.0G 40K 2.0G 1% /var/run none 2.0G 0 2.0G 0% /var/lock none 2.0G 0 2.0G 0% /lib/init/rw danny@hydrogen:/$ sudo du -chs / du: cannot access `/proc/1662/task/1662/fd/4': No such file or directory du: cannot access `/proc/1662/task/1662/fdinfo/4': No such file or directory du: cannot access `/proc/1662/fd/4': No such file or directory du: cannot access `/proc/1662/fdinfo/4': No such file or directory danny@hydrogen:/$ df Filesystem 1K-blocks Used Available Use% Mounted on /dev/cciss/c0d0p1 135342296 128144108 323104 100% / none 1991336 196 1991140 1% /dev none 1995788 0 1995788 0% /dev/shm none 1995788 40 1995748 1% /var/run none 1995788 0 1995788 0% /var/lock none 1995788 0 1995788 0% /lib/init/rw danny@hydrogen:/$ mount /dev/cciss/c0d0p1 on / type ext4 (rw,errors=remount-ro) proc on /proc type proc (rw,noexec,nosuid,nodev) none on /sys type sysfs (rw,noexec,nosuid,nodev) none on /sys/fs/fuse/connections type fusectl (rw) none on /sys/kernel/debug type debugfs (rw) none on /sys/kernel/security type securityfs (rw) none on /dev type devtmpfs (rw,mode=0755) none on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620) none on /dev/shm type tmpfs (rw,nosuid,nodev) none on /var/run type tmpfs (rw,nosuid,mode=0755) none on /var/lock type tmpfs (rw,noexec,nosuid,nodev) none on /lib/init/rw type tmpfs (rw,nosuid,mode=0755) danny@hydrogen:/$ sudo du -h --max-depth=1 634M ./premvet_sync 5.6M ./etc 4.0K ./opt 16K ./lost+found 7.4M ./bin 623M ./lib 196K ./dev 0 ./sys 4.0K ./srv 4.0K ./cdrom 8.0K ./media 52K ./tmp ... it hangs for ages here..... The server is running Ubuntu 10.04.4 LTS. System load: 2.85 Temperature: 8 C Usage of /: 94.7% of 129.07GB Processes: 132 Memory usage: 39% Users logged in: 0 Swap usage: 0% IP address for eth0: 192.168.1.124 => / is using 94.7% of 129.07GB I'm struggling to comprehend why this is happening! Any pointers would be appreciated.

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• SQL SERVER – Signal Wait Time Introduction with Simple Example – Wait Type – Day 2 of 28

  - by pinaldave

  In this post, let’s delve a bit more in depth regarding wait stats. The very first question: when do the wait stats occur? Here is the simple answer. When SQL Server is executing any task, and if for any reason it has to wait for resources to execute the task, this wait is recorded by SQL Server with the reason for the delay. Later on we can analyze these wait stats to understand the reason the task was delayed and maybe we can eliminate the wait for SQL Server. It is not always possible to remove the wait type 100%, but there are few suggestions that can help. Before we continue learning about wait types and wait stats, we need to understand three important milestones of the query life-cycle. Running - a query which is being executed on a CPU is called a running query. This query is responsible for CPU time. Runnable – a query which is ready to execute and waiting for its turn to run is called a runnable query. This query is responsible for Signal Wait time. (In other words, the query is ready to run but CPU is servicing another query). Suspended – a query which is waiting due to any reason (to know the reason, we are learning wait stats) to be converted to runnable is suspended query. This query is responsible for wait time. (In other words, this is the time we are trying to reduce). In simple words, query execution time is a summation of the query Executing CPU Time (Running) + Query Wait Time (Suspended) + Query Signal Wait Time (Runnable). Again, it may be possible a query goes to all these stats multiple times. Let us try to understand the whole thing with a simple analogy of a taxi and a passenger. Two friends, Tom and Danny, go to the mall together. When they leave the mall, they decide to take a taxi. Tom and Danny both stand in the line waiting for their turn to get into the taxi. This is the Signal Wait Time as they are ready to get into the taxi but the taxis are currently serving other customer and they have to wait for their turn. In other word they are in a runnable state. Now when it is their turn to get into the taxi, the taxi driver informs them he does not take credit cards and only cash is accepted. Neither Tom nor Danny have enough cash, they both cannot get into the vehicle. Tom waits outside in the queue and Danny goes to ATM to fetch the cash. During this time the taxi cannot wait, they have to let other passengers get into the taxi. As Tom and Danny both are outside in the queue, this is the Query Wait Time and they are in the suspended state. They cannot do anything till they get the cash. Once Danny gets the cash, they are both standing in the line again, creating one more Signal Wait Time. This time when their turn comes they can pay the taxi driver in cash and reach their destination. The time taken for the taxi to get from the mall to the destination is running time (CPU time) and the taxi is running. I hope this analogy is bit clear with the wait stats. You can check the Signalwait stats using following query of Glenn Berry. -- Signal Waits for instance SELECT CAST(100.0 * SUM(signal_wait_time_ms) / SUM (wait_time_ms) AS NUMERIC(20,2)) AS [%signal (cpu) waits], CAST(100.0 * SUM(wait_time_ms - signal_wait_time_ms) / SUM (wait_time_ms) AS NUMERIC(20,2)) AS [%resource waits] FROM sys.dm_os_wait_stats OPTION (RECOMPILE); Higher the Signal wait stats are not good for the system. Very high value indicates CPU pressure. In my experience, when systems are running smooth and without any glitch the Signal wait stat is lower than 20%. Again, this number can be debated (and it is from my experience and is not documented anywhere). In other words, lower is better and higher is not good for the system. In future articles we will discuss in detail the various wait types and wait stats and their resolution. Read all the post in the Wait Types and Queue series. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Pinal Dave, PostADay, SQL, SQL Authority, SQL DMV, SQL Performance, SQL Query, SQL Scripts, SQL Server, SQL Tips and Tricks, SQL Wait Stats, SQL Wait Types, T SQL, Technology

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• SQL SERVER – Single Wait Time Introduction with Simple Example – Wait Type – Day 2 of 28

  - by pinaldave

  In this post, let’s delve a bit more in depth regarding wait stats. The very first question: when do the wait stats occur? Here is the simple answer. When SQL Server is executing any task, and if for any reason it has to wait for resources to execute the task, this wait is recorded by SQL Server with the reason for the delay. Later on we can analyze these wait stats to understand the reason the task was delayed and maybe we can eliminate the wait for SQL Server. It is not always possible to remove the wait type 100%, but there are few suggestions that can help. Before we continue learning about wait types and wait stats, we need to understand three important milestones of the query life-cycle. Running - a query which is being executed on a CPU is called a running query. This query is responsible for CPU time. Runnable – a query which is ready to execute and waiting for its turn to run is called a runnable query. This query is responsible for Single Wait time. (In other words, the query is ready to run but CPU is servicing another query). Suspended – a query which is waiting due to any reason (to know the reason, we are learning wait stats) to be converted to runnable is suspended query. This query is responsible for wait time. (In other words, this is the time we are trying to reduce). In simple words, query execution time is a summation of the query Executing CPU Time (Running) + Query Wait Time (Suspended) + Query Single Wait Time (Runnable). Again, it may be possible a query goes to all these stats multiple times. Let us try to understand the whole thing with a simple analogy of a taxi and a passenger. Two friends, Tom and Danny, go to the mall together. When they leave the mall, they decide to take a taxi. Tom and Danny both stand in the line waiting for their turn to get into the taxi. This is the Signal Wait Time as they are ready to get into the taxi but the taxis are currently serving other customer and they have to wait for their turn. In other word they are in a runnable state. Now when it is their turn to get into the taxi, the taxi driver informs them he does not take credit cards and only cash is accepted. Neither Tom nor Danny have enough cash, they both cannot get into the vehicle. Tom waits outside in the queue and Danny goes to ATM to fetch the cash. During this time the taxi cannot wait, they have to let other passengers get into the taxi. As Tom and Danny both are outside in the queue, this is the Query Wait Time and they are in the suspended state. They cannot do anything till they get the cash. Once Danny gets the cash, they are both standing in the line again, creating one more Single Wait Time. This time when their turn comes they can pay the taxi driver in cash and reach their destination. The time taken for the taxi to get from the mall to the destination is running time (CPU time) and the taxi is running. I hope this analogy is bit clear with the wait stats. You can check the single wait stats using following query of Glenn Berry. -- Signal Waits for instance SELECT CAST(100.0 * SUM(signal_wait_time_ms) / SUM (wait_time_ms) AS NUMERIC(20,2)) AS [%signal (cpu) waits], CAST(100.0 * SUM(wait_time_ms - signal_wait_time_ms) / SUM (wait_time_ms) AS NUMERIC(20,2)) AS [%resource waits] FROM sys.dm_os_wait_stats OPTION (RECOMPILE); Higher the single wait stats are not good for the system. Very high value indicates CPU pressure. In my experience, when systems are running smooth and without any glitch the single wait stat is lower than 20%. Again, this number can be debated (and it is from my experience and is not documented anywhere). In other words, lower is better and higher is not good for the system. In future articles we will discuss in detail the various wait types and wait stats and their resolution. Read all the post in the Wait Types and Queue series. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Pinal Dave, PostADay, SQL, SQL Authority, SQL DMV, SQL Performance, SQL Query, SQL Scripts, SQL Server, SQL Tips and Tricks, SQL Wait Stats, SQL Wait Types, T SQL, Technology

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• visual basic coach needed [closed]

  - by Danny

  0 down vote favorite I am trying to learn visual basic. I used to program in gw-basic and have trouble learning vb.net by reading and googling all the time. It takes so much time to find the answers to my programming problems and even then i do not understand the why it have to be done that way. I have beginners questions like finding childwindows using enumwindow. Then googling for hours and hours i do not seem to grasp it (must be my old age). I would like to get someone i could learn from by asking questions about what i want to program and learn from it. not to just finish the program but to learn and understand it too. Someone who dont find questions stupid to ask as i try to build my understanding of the visual basic environment. I hope to communicate by using skype voice or chat or other direct means when time permits it. Cheers, Danny

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• state: pending & public-address: null :: Juju setup on local machine

  - by Danny Kopping

  I've setup Juju on a local VM inside VMWare running on Mac OSX. Everything seems to be working fine, except when I deployed MySQL & WordPress from the examples, I get the following when I run juju status: danny@ubuntu:~$ juju status machines: 0: dns-name: localhost instance-id: local instance-state: running state: down services: mysql: charm: local:oneiric/mysql-11 relations: db: wordpress units: mysql/0: machine: 0 public-address: 192.168.122.107 relations: db: state: up state: started wordpress: charm: local:oneiric/wordpress-31 exposed: true relations: db: mysql units: wordpress/0: machine: 0 open-ports: [] public-address: null relations: {} state: pending state: pending and public-address: null Can't find any documentation relating to this issue. Any help very much appreciated - wonderful idea for a project!

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• Carolina Code Camp 2010

  - by Mark A. Wilson

  "Grow your skills in 2010" The Enterprise Developers Guild in Charlotte, the Greenville-Spartanburg Enterprise Developers Guild and the Triad Developers Guild have joined with Microsoft and Central Piedmont Community College (CPCC) Association for Computing Machinery (ACM) to present the 10th MSDN Code Camp to be held in Charlotte. Please join me and fellow developers and code enthusiasts on Saturday, May 15, 2010, at the CPCC Levine Campus in Matthews, NC. The focus this year is Microsoft Visual Studio 2010 and Windows Phone 7. Everyone is invited to attend and/or speak! Get in-depth exposure to Visual Studio 2010 and other exciting new Microsoft technologies. Sessions will range from presentations, to hands on labs, to informal "chalk talks". We will have a mix of speakers including Microsoft MVPs, authors, and most importantly, local developers just like you! And thanks to the generosity of our contributors, we will be able to provide breakfast, lunch, snacks, and lots of swag. Registration is open and there are a limited number of seats left. For more information or to register, visit the Carolina Code Camp 2010 event website. I encourage you to "give back" by registering as a volunteer or a proctor. This will be the only Carolina Code Camp held this year – no event is schedule for the fall – so register today before it’s too late! Thanks for visiting and till next time, Mark A. Wilson      Mark's Geekswithblogs Blog Enterprise Developers Guild Technorati Tags: Community

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• Email Net::SMTPFatalError when sending email from Rails App

  - by Danny McClelland

  Hi Everyone, I have setup my application to send an email when a new case is created. if @kase.save UserMailer.deliver_contact_confirmation(@user) I have added the following to my user_mailer.rb def contact_confirmation(user) @subject = 'Message Subject' @body = "Message content" @from = "[email protected]" end but...when I create a new case and click submit I get the following: Net::SMTPFatalError in KasesController#create 555 5.5.2 Syntax error. x1sm110877wbx.1 I have added the SMTP details to the environment.rb as follows: ActionMailer::Base.delivery_method = :smtp ActionMailer::Base.smtp_settings = { :enable_starttls_auto => true, :address => "smtp.gmail.com", :port => "587", :domain => "XXXX.co.uk", :authentication => :plain, :user_name => "[email protected]", :password => "XXXX" } Any ideas? Thanks, Danny

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• Include dynamic info in Rails emails

  - by Danny McClelland

  Hi Everyone, I have managed to get my email problem sorted so now everytime a case is created an email goes out to the specified address. I have a usermailer.rb def makeakase(email, name, jobno, casesubject) recipients email from "no-reply@your_rails_app.com" subject "FW: Kase creation from Survey Manager" sent_on Time.now body :name => name end and I have the kases_controller.rb: if @kase.save UserMailer.deliver_makeakase("[email protected]", "Highrise") In the body I would like to use the tags that I use in the kase show view such as: <%=h @kase.jobno %> - <%=h @kase.casesubject %> but they don't work, I get the following error: wrong number of arguments (2 for 4) Any ideas? Thanks, Danny

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• Detecting your application's install path in Java?

  - by Danny King

  Hi, I have made a small application in Java and I would like to make a windows installer for it using the Nullsoft Scriptable Install System (http://nsis.sourceforge.net/Main_Page). The application I made needs to save user preferences somewhere and it currently saves it in the user's home directory (e.g. c:\Users\danny or /home/users/danny). However if the windows installer installs the application to e.g. c:\Program Files\whatever\ I should probably save the preferences file there too, right? How would I detect that directory path in Java? What would be a good cross-platform approach to this without losing the benefits of a windows uninstaller for windows users e.g. start menu icons, installer option, etc? Should I just continue saving my preferences in the user's home path and clutter it up? Thanks very much,

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• Microsoft MVP Award Nomination

  - by Mark A. Wilson

  I am extremely honored to announce that I have been nominated to receive the Microsoft MVP Award for my contributions in C#! Hold on; I have not won the award yet. But to be nominated is really humbling. Thank you very much! For those of you who may not know, here is a high-level summary of the MVP award: The Microsoft Most Valuable Professional (MVP) Program recognizes and thanks outstanding members of technical communities for their community participation and willingness to help others. The program celebrates the most active community members from around the world who provide invaluable online and offline expertise that enriches the community experience and makes a difference in technical communities featuring Microsoft products. MVPs are credible, technology experts from around the world who inspire others to learn and grow through active technical community participation. While MVPs come from many backgrounds and a wide range of technical communities, they share a passion for technology and a demonstrated willingness to help others. MVPs do this through the books and articles they author, the Web sites they manage, the blogs they maintain, the user groups they participate in, the chats they host or contribute to, the events and training sessions where they present, as well as through the questions they answer in technical newsgroups or message boards. - Microsoft MVP Award Nomination Email I guess I should start my nomination acceptance speech by profusely thanking Microsoft as well as everyone who nominated me. Unfortunately, I’m not completely certain who those people are. While I could guess (in no particular order: Bill J., Brian H., Glen G., and/or Rob Z.), I would much rather update this post accordingly after I know for certain who to properly thank. I certainly don’t want to leave anyone out! Please Help My next task is to provide the MVP Award committee with information and descriptions of my contributions during the past 12 months. For someone who has difficulty remembering what they did just last week, trying to remember something that I did 12 months ago is going to be a real challenge. (Yes, I should do a better job blogging about my activities. I’m just so busy!) Since this is an award about community, I invite and encourage you to participate. Please leave a comment below or send me an email. Help jog my memory by listing anything and everything that you can think of that would apply and/or be important to include in my reply back to the committee. I welcome advice on what to say and how to say it from previous award winners. Again, I greatly appreciate the nomination and welcome any assistance you can provide. Thanks for visiting and till next time, Mark A. Wilson      Mark's Geekswithblogs Blog Enterprise Developers Guild Technorati Tags: Community,Way Off Topic

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• Slides and Pictures from PowerShell Saturday Columbus 2012

  - by Brian Jackett

  On March 10th, 2012 the first ever PowerShell Saturday conference took place in Columbus, OH and I couldn’t be happier with the outcome.  We had 100 attendees from 10 different states (the biggest surprise to me) come to see 6 speakers present on a variety of PowerShell topics: introduction, WMI, SharePoint, Active Directory, Exchange, 3rd party products and more.      A big thank you also goes out to a number of people. Planning committee Wes Stahler, lead organizer of PowerShell Saturday Columbus, president of Central Ohio PowerShell User Group Ed “Microsoft Scripting Guy” Wilson Teresa “The Scripting Wife” Wilson Ashley McGlone Brian T. Jackett (myself) Speakers Ed Wilson Ashley McGlone James Brundage Trevor Sullivon Daniel Cruz Volunteer Lisa Gardner, fellow Microsoft PFE volunteered her time on a Saturday to assist with smooth operation of the day Facility Coordination Debbie Carrier, facilities coordinator for the Columbus Microsoft Office and helped us out greatly with the venue   Slides and Script Samples    I presented my session on “PowerShell for the SharePoint 2010 Developer”.  Below you can download the slides and script samples.   Photos    I wasn’t able to take took many pictures (only 3) as I was busy doing my presentation, answering questions, and taking care of random items throughout the day.   Pictures on Facebook    click here Pictures on SkyDrive (higher res) PowerShell Saturday Columbus Mar '12 VIEW SLIDE SHOW DOWNLOAD ALL   Conclusion    I’m very happy that this first ever PowerShell Saturday was a success.  My fellow PFE and speaker Ashley McGlone also has a short write-up on his blog about the event (click here).  I have heard rumors that there are other cities starting to plan their own local events.  When I hear more details I’ll spread the word here and on Twitter.         -Frog Out

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• NoMethodError Rails multiple file uploads

  - by Danny McClelland

  Hi Everyone, I am working on getting multiple file uploads working for an model in my application, I have included the code below: delivers_controller.rb # POST /delivers def create @deliver = Deliver.new(params[:deliver]) process_file_uploads(@deliver) if @deliver.save flash[:notice] = 'Task was successfully created.' redirect_to(@deliver) else render :action => "new" end end protected def process_file_uploads(deliver) i = 0 while params[:attachment]['file_'+i.to_s] != "" && !params[:attachment]['file_'+i.to_s].nil? deliver.assets.build(:data => params[:attachment]['file_'+i.to_s]) i += 1 end end deliver.rb has_many :assets, :as => :attachable, :dependent => :destroy validate :validate_attachments Max_Attachments = 5 Max_Attachment_Size = 5.megabyte def validate_attachments errors.add_to_base("Too many attachments - maximum is #{Max_Attachments}") if assets.length > Max_Attachments assets.each {|a| errors.add_to_base("#{a.name} is over #{Max_Attachment_Size/1.megabyte}MB") if a.file_size > Max_Attachment_Size} end assets_controller.rb class AssetsController < ApplicationController def show asset = Asset.find(params[:id]) # do security check here send_file asset.data.path, :type => asset.data_content_type end def destroy asset = Asset.find(params[:id]) @asset_id = asset.id.to_s @allowed = Deliver::Max_Attachments - asset.attachable.assets.count asset.destroy end end asset.rb class Asset < ActiveRecord::Base has_attached_file :data, belongs_to :attachable, :polymorphic => true def url(*args) data.url(*args) end def name data_file_name end def content_type data_content_type end def file_size data_file_size end end Whenever I create a new deliver item and try to attach any files I get the following error: NoMethodError in DeliversController#create You have a nil object when you didn't expect it! You might have expected an instance of ActiveRecord::Base. The error occurred while evaluating nil.[] /Users/danny/Dropbox/SVN/railsapps/macandco/surveymanager/trunk/app/controllers/delivers_controller.rb:60:in `process_file_uploads' /Users/danny/Dropbox/SVN/railsapps/macandco/surveymanager/trunk/app/controllers/delivers_controller.rb:46:in `create' new.html.erb (Deliver view) <% content_for :header do -%> Deliver Repositories <% end -%> <% form_for(@deliver, :html => { :multipart => true }) do |f| %> <%= f.error_messages %> <p> <%= f.label :caseref %><br /> <%= f.text_field :caseref %> </p> <p> <%= f.label :casesubject %><br /> <%= f.text_area :casesubject %> </p> <p> <%= f.label :description %><br /> <%= f.text_area :description %> </p> <p>Pending Attachments: (Max of <%= Deliver::Max_Attachments %> each under <%= Deliver::Max_Attachment_Size/1.megabyte%>MB) <% if @deliver.assets.count >= Deliver::Max_Attachments %> <input id="newfile_data" type="file" disabled /> <% else %> <input id="newfile_data" type="file" /> <% end %> <div id="attachment_list"><ul id="pending_files"></ul></div> </p> <p> <%= f.submit 'Create' %> </p> <% end %> <%= link_to 'Back', delivers_path %> Show.html.erb (Delivers view) <% content_for :header do -%> Deliver Repositories <% end -%> <p> <b>Title:</b> <%=h @deliver.caseref %> </p> <p> <b>Body:</b> <%=h @deliver.casesubject %> </p> <p><b>Attached Files:</b><div id="attachment_list"><%= render :partial => "attachment", :collection => @deliver.assets %></div></p> <%= link_to 'Edit', edit_deliver_path(@deliver) %> | <%= link_to 'Back', deliver_path %> <%- if logged_in? %> <%= link_to 'Edit', edit_deliver_path(@deliver) %> | <%= link_to 'Back', delivers_path %> <% end %> _attachment.html.erb (Delivers view) <% if !attachment.id.nil? %><li id='attachment_<%=attachment.id %>'><a href='<%=attachment.url %>'><%=attachment.name %></a> (<%=attachment.file_size/1.kilobyte %>KB) <%= link_to_remote "Remove", :url => asset_path(:id => attachment), :method => :delete, :html => { :title => "Remove this attachment", :id => "remove" } %></li> <% end %> I have been banging my head against the wall with the error all day, if anyone can shed some light on it, I would be eternally grateful! Thanks, Danny

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• How to share connection pool among multiple Java applications

  - by Wilson

  Hi all. I'm implementing several JavaSE applications on single server. Is it possible to setup a single connection pool (e.g. C3P0) and share among these applications? I just want to have an easy way to manage the total number of DB connections. Is there any drawbacks using such centralized connection pool? Thank you, Wilson

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• Multiple choice search in Wordpress.

  - by Danny Tonkin

  Hi there, does any one know how to createa search panel similar to the "quick find" bar on this site? http://www.thebedandbreakfastclub.co.uk I've been trying to find a plugin or tutorial but have had no luck at all. I'm looking for some thing that filters child categories according the the parent category the user has clicked on. Please could some one point me in the right direction. Thanks very much Danny

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• Is this a good way to do a game loop for an iPhone game?

  - by Danny Tuppeny

  Hi all, I'm new to iPhone dev, but trying to build a 2D game. I was following a book, but the game loop it created basically said: function gameLoop update() render() sleep(1/30th second) gameLoop The reasoning was that this would run at 30fps. However, this seemed a little mental, because if my frame took 1/30th second, then it would run at 15fps (since it'll spend as much time sleeping as updating). So, I did some digging and found the CADisplayLink class which would sync calls to my gameLoop function to the refresh rate (or a fraction of it). I can't find many samples of it, so I'm posting here for a code review :-) It seems to work as expected, and it includes passing the elapsed (frame) time into the Update method so my logic can be framerate-independant (however I can't actually find in the docs what CADisplayLink would do if my frame took more than its allowed time to run - I'm hoping it just does its best to catch up, and doesn't crash!). // // GameAppDelegate.m // // Created by Danny Tuppeny on 10/03/2010. // Copyright Danny Tuppeny 2010. All rights reserved. // #import "GameAppDelegate.h" #import "GameViewController.h" #import "GameStates/gsSplash.h" @implementation GameAppDelegate @synthesize window; @synthesize viewController; - (void) applicationDidFinishLaunching:(UIApplication *)application { // Create an instance of the first GameState (Splash Screen) [self doStateChange:[gsSplash class]]; // Set up the game loop displayLink = [CADisplayLink displayLinkWithTarget:self selector:@selector(gameLoop)]; [displayLink setFrameInterval:2]; [displayLink addToRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode]; } - (void) gameLoop { // Calculate how long has passed since the previous frame CFTimeInterval currentFrameTime = [displayLink timestamp]; CFTimeInterval elapsed = 0; // For the first frame, we want to pass 0 (since we haven't elapsed any time), so only // calculate this in the case where we're not the first frame if (lastFrameTime != 0) { elapsed = currentFrameTime - lastFrameTime; } // Keep track of this frames time (so we can calculate this next time) lastFrameTime = currentFrameTime; NSLog([NSString stringWithFormat:@"%f", elapsed]); // Call update, passing the elapsed time in [((GameState*)viewController.view) Update:elapsed]; } - (void) doStateChange:(Class)state { // Remove the previous GameState if (viewController.view != nil) { [viewController.view removeFromSuperview]; [viewController.view release]; } // Create the new GameState viewController.view = [[state alloc] initWithFrame:CGRectMake(0, 0, IPHONE_WIDTH, IPHONE_HEIGHT) andManager:self]; // Now set as visible [window addSubview:viewController.view]; [window makeKeyAndVisible]; } - (void) dealloc { [viewController release]; [window release]; [super dealloc]; } @end Any feedback would be appreciated :-) PS. Bonus points if you can tell me why all the books use "viewController.view" but for everything else seem to use "[object name]" format. Why not [viewController view]?

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