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  • Testcase runner for parametrized testcases

    - by Razer
    Let me explain my situation. I'm planning a kind of test case runner for doing testcases on external devices, which are microcontroller based. Lets consider the devices: Device 1 Device 2 There exist a lot of test cases which can be run with one of the devices above. For example: Testcase 1 Testcase 2 The main reason that all the testcases can be run with any device is, that the testcases validates some standard and this software should be extensible for future devices. The testcases itself must be runnable with changing parameters. For example Testcase 1 does some Timing Verification the testcase needs as input parameter the datarate: 4800, 9600, 19200. Now hoping you understand the situation, let me explain my design questions. For implementing the test cases I thought about an Attribute based approach, like nunit does it. The more complicated problem is, how to define the parametrized testcases? Like this: Device 1: Testcase 1: datarate: 4800, 9600, 19200 Testcase 2: supply: 1, 2, 3 Device 2: Testcase 1: datarate: 9600, 19200, 38400 Testcase 2: supply: 3, 4, 5 How would you design such a framework? I've done a similar desin in python where I had for every device a XML containing the testcase definitions like: <Testcase="Testcase 1" datarate=4800/> <Testcase="Testcase 1" datarate=9600/> <Testcase="Testcase 1" datarate=19200/>

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  • Designing Content-Based ETL Process with .NET and SFDC

    - by Patrick
    As my firm makes the transition to using SFDC as our main operational system, we've spun together a couple of SFDC portals where we can post customer-specific documents to be viewed at will. As such, we've had the need for pseudo-ETL applications to be implemented that are able to extract metadata from the documents our analysts generate internally (most are industry-standard PDFs, XML, or MS Office formats) and place in networked "queue" folders. From there, our applications scoop of the queued documents and upload them to the appropriate SFDC CRM Content Library along with some select pieces of metadata. I've mostly used DbAmp to broker communication with SFDC (DbAmp is a Linked Server provider that allows you to use SQL conventions to interact with your SFDC Org data). I've been able to create [console] applications in C# that work pretty well, and they're usually structured something like this: static void Main() { // Load parameters from app.config. // Get documents from queue. var files = someInterface.GetFiles(someFilterOrRegexPattern); foreach (var file in files) { // Extract metadata from the file. // Validate some attributes of the file; add any validation errors to an in-memory // structure (e.g. List<ValidationErrors>). if (isValid) { // Upload using some wrapper for an ORM an someInterface.Upload(meta.Param1, meta.Param2, ...); } else { // Bounce the file } } // Report any validation errors (via message bus or SMTP or some such). } And that's pretty much it. Most of the time I wrap all these operations in a "Worker" class that takes the needed interfaces as constructor parameters. This approach has worked reasonably well, but I just get this feeling in my gut that there's something awful about it and would love some feedback. Is writing an ETL process as a C# Console app a bad idea? I'm also wondering if there are some design patterns that would be useful in this scenario that I'm clearly overlooking. Thanks in advance!

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  • Sending changes to a terrain heightmap over UDP

    - by Floomi
    This is a more conceptual, thinking-out-loud question than a technical one. I have a 3D heightmapped terrain as part of a multiplayer RTS that I would like to terraform over a network. The terraforming will be done by units within the gameworld; the player will paint a "target heightmap" that they'd like the current terrain to resemble and units will deform towards that on their own (a la Perimeter). Given my terrain is 257x257 vertices, the naive approach of sending heights when they change will flood the bandwidth very quickly - updating a quarter of the terrain every second will hit ~66kB/s. This is clearly way too much. My next thought was to move to a brush-based system, where you send e.g. the centre of a circle, its radius, and some function defining the influence of the brush from the centre going outwards. But even with reliable UDP the "start" and "stop" messages could still be delayed. I guess I could compare timestamps and compensate for this, although it'd likely mean that clients would deform verts too much on their local simulations and then have to smooth them back to the correct heights. I could also send absolute vert heights in the "start" and "stop" messages to guarantee correct data on the clients. Alternatively I could treat brushes in a similar way to units, and do the standard position + velocity + client-side prediction jazz on them, with the added stipulation that they deform terrain within a certain radius around them. The server could then intermittently do a pass and send (a subset of) recently updated verts to clients as and when there's bandwidth to spare. Any other suggestions, or indications that I'm on the right (or wrong!) track with any of these ideas would be greatly appreciated.

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  • Restful WebAPI VS Regular Controllers

    - by Rohan Büchner
    I'm doing some R&D on what seems like a very confusing topic, I've also read quite a few of the other SO questions, but I feel my question might be unique enough to warrant me asking. We've never developed an app using pure WebAPI. We're trying to write a SPA style app, where the back end is fully decoupled from the front end code Assuming our service does not know anything about who is accessing/consuming it: WebAPI seems like the logical route to serve data, as opposed to using the standard MVC controllers, and serving our data via an action result and converting it to JSON. This to me at least seems like an MC design... which seems odd, and not what MVC was meant for. (look mom... no view) What would be considered normal convention in terms of performing action(y) calls? My sense is that my understanding of WebAPI is incorrect. The way I perceive WebAPI, is that its meant to be used in a CRUD sense, but what if I want to do something like: "InitialiseMonthEndPayment".... Would I need to create a WebAPI controller, called InitialiseMonthEndPaymentController, and then perform a POST... Seems a bit weird, as opposed to a MVC controller where i can just add a new action on the MonthEnd controller called InitialisePayment. Or does this require a mindset shift in terms of design? Any further links on this topic will be really useful, as my fear is we implement something that might be weird an could turn into a coding/maintenance concern later on?

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  • Class Design for special business rules

    - by Samuel Front
    I'm developing an application that allows people to place custom manufacturing orders. However, while most require similar paperwork, some of them have custom paperwork that only they require. My current class design has a Manufacturer class, of which of one of the member variables is an array of RequiredSubmission objects. However, there are two issues that I am somewhat concerned about. First, some manufacturers are willing to accept either a standard form or their own custom form. I'm thinking of storing this in the RequiredSubmission object, with an array of alternate forms that are a valid substitute. I'm not sure that this is ideal, however. The major issue, however, is that some manufacturers have deadline cycles. For example, forms A, B and C have to be delivered by January 1, while payment must be rendered by January 10. If you miss those, you'll have to wait until the next cycle. I'm not exactly sure how I can get this to work with my existing classes—how can I say "this set of dates all belong to the same cycle, with date A for form A, date B for form B, etc." I would greatly appreciate any insights on how to best design these classes.

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  • Seeking solution for printing-reporting .NET

    - by Parhs
    I am developing an application that prints in separate threads in extreme cases about 20-25 pages per minute to various thermal printers. Currently templates for these are XAML xps documents. All printers have graphics drivers that support EMF/GDI printing. So GDI-EMF is done by operating system resulting in slower performance. Sending raw text for printing is another good solution but doesnt work always , because some clients have old chinese thermal printer that nobody support thus impossible to change codepage / emulation. So it doesnt work always. Also most computers running my software are low end ATOM CPU. So I am thinking to return to GDI, EMF printing and have both Text-Only reports and EMF reports. Another reason i want EMF is because here receipts are signed by Electronic Fiscal Memory device.Most of these dont do good job extracting text from XPS as they dont follow the standard but how windows convert GDI to XPS.Even with text-only mode some of them dont support all character encodings and are impossible to send paper cut command after the sign. I know that using a reporting engine would solve rendering problem but I dont want to buy one. All I want is to be able to show tabular data and insert an image and replaced text.I know there is StringTemplate that could do the generation of template but the problem is i should parse somehow the template and render it using GDI commands. Is there any other solution/approach for this ? Or is there anything ready ?

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  • Friday Tips #5

    - by Chris Kawalek
    Happy Friday, everyone! Following up on yesterday's post about Oracle VM VirtualBox being selected as the best virtualization solution for 2012 by the readers of Linux Journal, our Friday tip is about that very cool piece of software: Question: How do I move a VM from one machine to another with Oracle VM VirtualBox? Answer by Andy Hall, Product Management Director, Oracle Desktop Virtualization: There are a number of ways to do this, with pros and cons for each. The most reliable approach is to Export and Import virtual machines: From the VirtualBox manager, simply use the File…Export appliance menu and follow the wizard's lead. Move the resulting file(s) to the destination machine; and Import the VM into VirtualBox. This method will take longer and use more disk space than other methods because the configuration files and virtual hard drives are converted into an industry standard format (.ova or .ovf). But an advantage of this approach is that the creator of the virtual appliance can add a license which the importer will see and click-to-accept at import time. This is especially useful for ISVs looking to deliver pre-built, configured and tested appliances to their customers and prospects. Thanks Andy! Remember, if you have a question for us, use Twitter hashtag #AskOracleVirtualization. We'll see you next week! -Chris 

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  • How do I install Ubuntu 12.04 PPC on a PowerPC G4 from commands line or fix the graphical mode?

    - by Gerardo Rodríguez
    Good afternoon. I'm new to this Linux world so I hope someone can help me . I recently got a Mac as a gift, a PowerPC G4 , which has 1GB of RAM but came with no optical drive or hard drive. So I put a dvd burner and a hard drive of 40 GB I got. Then download an iso of Ubuntu 12.04 for PowerPC and burned onto a CD. I'm trying to install from Open Firmware ( as I haven't a Mac keyboard, I use one standard ) . Finally, the Installation CD boots , but on live mode and after the Ubuntu 12.04 screen I get a message that there is a problem with my graphics adapter but I can continue with minimal graphics and give me the command line . My question is that how do I install through a text or if there is any way to fix this problem to run the graphical mode and so can continue the installation of Ubuntu, and if once installed Ubuntu the problem will be fixed or what? I would appreciate if you help me , as I mentioned before, there is almost nothing of Ubuntu but I think it will be easier than trying to get the Mac OS X proper . Spend good.

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  • Profit : August, 2012

    - by user462779
    August 2012 issue of Profit is now available online. Way back in 2003, I wrote my first feature for Profit. It was titled “Everything You Always Wanted to Know About Application Servers (But Were Afraid To Ask),” and it discussed “cutting-edge” technologies like portals and XML and the brand-new Java Platform, Enterprise Edition (Java EE; we’re now on Java EE 7). But despite the dated terms I used in my Profit debut, I noticed something in rereading that old story that has stayed constant: mid-tier technology is where innovative enterprise IT projects happen. It may have been XML in 2003, but it’s SOA in 2012. While preparing the August issue of Profit was more than just a stroll down memory lane for me, it has provided a nice bit of perspective about what changes and what doesn’t in this dynamic IT industry. Technologies continuously evolve—some become standard practice, some are revived or reinvented, and some are left by the wayside. But the drive to innovate and the desire to succeed are business principles that never go out of fashion. Also, be sure to check out the Profit JD Edwards Special Issue 2012 (PDF), featuring partner profiles, customer successes, and Oracle executive interviews. The Middleware Advantage Three ways a flexible, integrate software layer can deliver a competitive edge Playing to Win Electronic Arts’ superefficient hub processes millions of online gaming transactions every day. Adjustable Loans With Oracle Exadata, Reliance Commercial Finance keeps pace with India’s commercial loan market. Future Proof To keep pace with mobile, social, and location-based services, smart technologists are using middleware to innovate. Spring Training Knowledge and communication help Jackson Hewitt’s Tim Bechtold get seasonal workers in top shape. Keeping Online Customers Happy Customers worldwide are comfortable with online service—but are companies meeting customers’ needs?

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  • How do I add unmet dependencies for unity-lens-music autogen.sh?

    - by nickform
    I would like to build unity-lens-music on my newly-upgraded Ubuntu 12.10 machine. I followed these instructions from the unity website to get the code. The README was empty but I guessed that ./autogen.sh would be a sensible place to start. Unfortunately it exits with the following error: checking for LENS_DAEMON... no configure: error: Package requirements (glib-2.0 >= 2.27 gobject-2.0 >= 2.27 gio-2.0 >= 2.27 gio-unix-2.0 >= 2.27 dee-1.0 >= 1.0.7 sqlite3 >= 3.7.7 gee-1.0 json-glib-1.0 unity >= 6.90.0 unity-extras >= 6.90.0 tdb >= 1.2.6) were not met: No package 'dee-1.0' found No package 'sqlite3' found No package 'gee-1.0' found No package 'json-glib-1.0' found No package 'unity' found No package 'unity-extras' found No package 'tdb' found When I attempt to satisfy the dependencies that aren't found using apt-get install I either find that there is no exact match (e.g. 'dee-1.0' which matches several packages), I already have the latest version (e.g. sqlite3, unity) or there is no match at all (e.g. unity-extras and tdb). There is a later suggestion to modify PKG_CONFIG_PATH if I have installed software in a non-standard location but, to my knowledge, I have not. How should I proceed?

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  • Setting the values of a struct array from JS to GLSL

    - by mikidelux
    I've been trying to make a structure that will contain all the lights of my WebGL app, and I'm having troubles setting up it's values from JS. The structure is as follows: struct Light { vec4 position; vec4 ambient; vec4 diffuse; vec4 specular; vec3 spotDirection; float spotCutOff; float constantAttenuation; float linearAttenuation; float quadraticAttenuation; float spotExponent; float spotLightCosCutOff; }; uniform Light lights[numLights]; After testing LOTS of things I made it work but I'm not happy with the code I wrote: program.uniform.lights = []; program.uniform.lights.push({ position: "", diffuse: "", specular: "", ambient: "", spotDirection: "", spotCutOff: "", constantAttenuation: "", linearAttenuation: "", quadraticAttenuation: "", spotExponent: "", spotLightCosCutOff: "" }); program.uniform.lights[0].position = gl.getUniformLocation(program, "lights[0].position"); program.uniform.lights[0].diffuse = gl.getUniformLocation(program, "lights[0].diffuse"); program.uniform.lights[0].specular = gl.getUniformLocation(program, "lights[0].specular"); program.uniform.lights[0].ambient = gl.getUniformLocation(program, "lights[0].ambient"); ... and so on I'm sorry for making you look at this code, I know it's horrible but I can't find a better way. Is there a standard or recommended way of doing this properly? Can anyone enlighten me?

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  • INETA NorAm Component Code Challenge

    - by Chris Williams
    Want to win a trip to TechEd 2011? INETA NorAm is hosting a contest with our partners to see who can build an .NET application making effective use of reusable components to solve a problem. The Rules: Any .NET Application (WinForms, ASP.NET, WPF, Silverlight, Windows Phone 7, etc.) built in the last year (since 1/1/2010) using at least 1 component from at least 1 approved vendor. Then make a 3 - 5 minute Camtasia video showing your entry and describing what component(s) you used and why your application is cool. Our judges will review the submissions and the best two will win a scholarship to Tech·Ed 2011, May 16-19 in Atlanta GA including airfare, hotel, and conference pass. The Judging: Entries will be judged on four criteria: Effective use of a component to solve a problem/display data Innovative use of components Impact using components (i.e. reduction in lines of code written, increased productivity, etc.) Most creative use of a component. Timeline: Hurry! The submission deadline is March 15, 2011 at Midnight Eastern Standard Time. More information can be found on the INETA Component Code Challenge page: http://ineta.org/CodeChallenge/Default.aspx

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  • What the Hekaton?

    - by Tony Davis
    Hekaton, the power behind SQL Server 2014′s In-Memory OLTP technology, is intended to make data operations run orders of magnitude faster on SQL Server. This works its magic partly by serving database workloads entirely from main memory, using memory-optimized table structures. It replaces the relational engine’s standard locking model with an optimistic concurrency model based on time-stamped row versions. Deeper down the Hekaton engine uses new, ‘latch free’ data structures. So far, so good, but performance improvements on this scale require a compromise, and the compromise is that these aren’t tables as we understand them. For the database developer, these differences are painful because they involve sacrificing some very important bits of the relational model. Most importantly, Hekaton tables don’t currently support FOREIGN KEY constraints or CHECK constraints, and you can’t put the checks in triggers because there aren’t any DML triggers either. Constraints allow a relational designer to enforce relational integrity and data integrity. Without them, of course, ‘bad data’ can get into our Hekaton tables. There is no easy way of preventing it. For several classes of database and data, this is a show-stopper. One may regard all these restrictions regretfully, seeing limited opportunity to try out Hekaton with current databases, but perhaps there is also a sudden glow of recognition. Isn’t this how we all originally imagined table variables were going to be, back in SQL 2005? And they have much the same restrictions. Maybe, instead of pretending that a currently-designed database can be ‘Hekatonized’ with a few mouse clicks, we should redesign databases for SQL 2014 to replace table variables with Hekaton tables, exploiting this technology for fast intermediate processing, and for the most part forget, for now, the idea of trying to convert our base relational tables into Hekaton tables. Few database developers would be averse to having their working tables running an order of magnitude faster, as long as it didn’t compromise the integrity of the data in the base tables.

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  • Another guvcview issue? Core dump!

    - by user290498
    guvcview is core dumping with my Sony Handycam plugged in. It works fine with my standard Logitech Webcam. I deleted the config file so it could re-create it. here is the output: $ guvcview guvcview 1.5.3 Could not open /home/rayj/.guvcviewrc for read, will try to create it write /home/rayj/.guvcviewrc OK ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side ALSA lib audio/pcm_bluetooth.c:1614:(audioservice_expect) BT_GET_CAPABILITIES failed : Input/output error(5) ALSA lib audio/pcm_bluetooth.c:1614:(audioservice_expect) BT_GET_CAPABILITIES failed : Input/output error(5) ALSA lib audio/pcm_bluetooth.c:1614:(audioservice_expect) BT_GET_CAPABILITIES failed : Input/output error(5) ALSA lib audio/pcm_bluetooth.c:1614:(audioservice_expect) BT_GET_CAPABILITIES failed : Input/output error(5) ALSA lib pcm_dmix.c:957:(snd_pcm_dmix_open) The dmix plugin supports only playback stream Cannot connect to server socket err = No such file or directory Cannot connect to server socket jack server is not running or cannot be started video device: /dev/video0 ERROR opening V4L2 interface for /dev/video1 Init. stk1160 (location: usb-0000:00:1d.0-1.5) { pixelformat = 'UYVY', description = '16 bpp YUY2, 4:2:2, packed' } VIDIOC_ENUM_FRAMESIZES - Error enumerating frame sizes: Inappropriate ioctl for device Unable to enumerate frame sizes. : Inappropriate ioctl for device { pixelformat = 'RGB3', description = 'RGB3' } { ?GSPCA? : width = 720, height = 480 } fmtind:2 fsizeind: 1 { pixelformat = 'BGR3', description = 'BGR3' } { ?GSPCA? : width = 720, height = 480 } fmtind:3 fsizeind: 1 { pixelformat = 'YU12', description = 'YU12' } { ?GSPCA? : width = 720, height = 480 } fmtind:4 fsizeind: 1 { pixelformat = 'YV12', description = 'YV12' } { ?GSPCA? : width = 720, height = 480 } fmtind:5 fsizeind: 1 vid:05e1 pid:0408 driver:stk1160 checking format: 1196444237 Format unavailable: 1196444237. Init v4L2 failed !! Init video returned -2 trying minimum setup ... Segmentation fault (core dumped)

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  • How to make Unity 3D work with Bumblebee using the Intel chipset

    - by EboMike
    I have a Sony VAIO S laptop with the dreaded Optimus and finally managed to get Bumblebee to work fully on Ubuntu 12.04 so that I can utilize both the hardware acceleration of the Intel chipset as well as the Nvidia one via optirun and/or bumble-app-settings. However, the desktop effects don't work. But they should, I vaguely remember that they worked for a while before I had Bumblebee installed. This is what I get with the support test: :~$ /usr/lib/nux/unity_support_test -p Xlib: extension "NV-GLX" missing on display ":0". OpenGL vendor string: Tungsten Graphics, Inc OpenGL renderer string: Mesa DRI Intel(R) Ivybridge Mobile OpenGL version string: 1.4 (2.1 Mesa 8.0.2) Not software rendered: yes Not blacklisted: yes GLX fbconfig: yes GLX texture from pixmap: yes GL npot or rect textures: yes GL vertex program: yes GL fragment program: yes GL vertex buffer object: no GL framebuffer object: yes GL version is 1.4+: yes Unity 3D supported: no First of all, I kind of doubt that the chipset doesn't support VBOs (essentially a standard feature in GL). Neither Xorg.0.log nor Xorg.8.log show any particular errors. As for the Nvidia drivers: In order to get them to work, I had to install the 304.22 drivers (older ones wouldn't work). They clobbered libglx.so, so I reinstated the xserver-xorg-core libglx.so in its original place, moved Nvidia's libglx.so to an nvidia-specific folder and specified that folder in the bumblebee.config. That seems to work and shouldn't cause the problem I see here. For fun, I tried to use the Nvidia chipset for Unity, but that didn't fly either: ~$ optirun /usr/lib/nux/unity_support_test -p OpenGL vendor string: NVIDIA Corporation OpenGL renderer string: GeForce GT 640M LE/PCIe/SSE2 OpenGL version string: 4.2.0 NVIDIA 304.22 Not software rendered: yes Not blacklisted: yes GLX fbconfig: yes GLX texture from pixmap: no GL npot or rect textures: yes GL vertex program: yes GL fragment program: yes GL vertex buffer object: yes GL framebuffer object: yes GL version is 1.4+: yes Unity 3D supported: no

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  • Old programmer disappeared. About to hire another programmer. How do I approach this?

    - by pocto
    After spending over one year working on a social network project for me using WordPress and BuddyPress, my programmer has disappeared, even though he got paid every single week, for the whole period. Yes, he's not dead as I used an email tracker to confirm and see he opens my emails, but he doesn't respond. It seems he got another job. I wonder why he just couldn't say so. And I even paid him an advance salary for work he hasn't done. The problem is that I never asked for full documentation for most of the functions he coded in. And there were MANY functions for this 1+ year period, and some of them have bugs that he still didn't fix. Now it seems all confusing. What's the first thing I should do now? How do I proceed? I guess the first thing to do will be to get another programmer, but I want to start on the right foot by having all the current code documented so that any programmer can work on all the functions without issues. Is that the first thing I should do? If yes, how do I go about it? What's the standard type of documentation required for something like this? Can I get a programmer that will just do the documentation for all the codes and fix the bugs or is documentation not really important? Also, do you think getting another "individual" programmer is better or get a company that has programmers working for them, so that if the programmer assigned to my project disappears, another can replace him, without my involvement? I feel this is the approach I should have taken in the beginning.

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  • How to create an extensible rope in Box2D?

    - by Thomas
    Let's say I'm trying to create a ninja lowering himself down a rope, or pulling himself back up, all whilst he might be swinging from side to side or hit by objects. Basically like http://ninja.frozenfractal.com/ but with Box2D instead of hacky JavaScript. Ideally I would like to use a rope joint in Box2D that allows me to change the length after construction. The standard Box2D RopeJoint doesn't offer that functionality. I've considered a PulleyJoint, connecting the other end of the "pulley" to an invisible kinematic body that I can control to change the length, but PulleyJoint is more like a rod than a rope: it constrains maximum length, but unlike RopeJoint it constrains the minimum as well. Re-creating a RopeJoint every frame using a new length is rather inefficient, and I'm not even sure it would work properly in the simulation. I could create a "chain" of bodies connected by RotationJoints but that is also less efficient, and less robust. I also wouldn't be able to change the length arbitrarily, but only by adding and removing a whole number of links, and it's not obvious how I would connect the remainder without violating existing joints. This sounds like something that should be straightforward to do. Am I overlooking something?

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  • SFTP permission denied on files owned by www-data

    - by Charles Roper
    I have a pretty standard server set up running Apache and PHP. An app I am running creates files and these are owned by the Apache user www-data. Files that I upload via SFTP are owned by my own user charlesr. All files are part of the www-data group. My problem is that I cannot modify or overwrite any of the files via SFTP which are owned by www-data, even though charlesr is part of the www-data group. I can modify the files no problem via a SSH session. So I'm not sure what to do. How do I give my SFTP session permissions to modify www-data owned files? For a bit of background, these are the notes I wrote for myself when setting-up the server: Now set up permissions on `/var/www` where your files are served from by default: $ sudo adduser $USER www-data $ sudo chgrp -R www-data /var/www $ sudo chmod -R g+rw /var/www $ sudo chmod -R g+s /var/www Now log out and log in again to make the changes take hold. The previous set of commands does the following: 1. adds the current user ($USER) to the `www-data` group; 2. changes `/var/www` to belong to the `www-data` group; 3. adds read/write permissions to the group that `/var/www` belongs to; 4. sets the SGID bit on `/var/www`; this final point bears some explaining. And then I go on to explain to myself what setting the SGID bit means (i.e. all files created in /var/www become part of the www-data group automatically). Btw, nothing feels sweeter than going back and reading your own detailed notes on the what, how and why of your own server set up when trying to troubleshoot like this - I recommend it highly to all beginners like myself :-)

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  • Oracle Fusion Applications Design Patterns Now Available

    - by Frank Nimphius
    "The Oracle Fusion Applications user experience design patterns are published! These new, reusable usability solutions and best-practices, which will join Oracle dashboard patterns and guidelines that are already available online, are used by Oracle to artfully bring to life a new standard in the user experience, or UX, of enterprise applications. Now, the Oracle applications development community can benefit from the science behind the Oracle Fusion Applications user experience, too.These Oracle Fusion Applications UX Design Patterns, or blueprints, enable Oracle applications developers and system implementers everywhere to leverage professional usability insight when [...]  designing exciting, new, highly usable applications -- in the cloud or on-premise.  Based on the Oracle Application Development Framework (ADF) components, the Oracle Fusion Applications patterns and guidelines are proven with real users and in the Applications UX usability labs, so you can get right to work coding productivity-enhancing designs that provide an advantage for your entire business.  What’s the best way to get started? We’ve made that easy, too. The Design Filter Tool (DeFT) selects the best pattern for your user type and task. Simply adapt your selection for your own task flow and content, and you’re on your way to a really great applications user experience. More Oracle applications design patterns and training are coming your way in the future. To provide feedback on the sets that are currently available, let us know in the comments section or use the contact form provided."

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  • SOA Forcing A Shift In IT Governance

    As more and more companies adopt a service oriented approach to developing and maintaining existing enterprise systems, IT governance also needs to shift its philosophies to fit the emerging development paradigm. When I first started programming companies placed an emphasis on “Code and Go” software development style. They only developed for current problems and did not really take a look at how the company could leverage some of the code we were developing across the entire enterprise system.  The concept of Service Oriented Architecture (SOA) has dramatically shifted how we develop enterprise software with emphasizing software processes as company assets. This has driven some to start developing new components as processes strictly for the possibility of future integration of existing and new systems. I personally like this new paradigm because it truly promotes code reusability. However, most enterprise level IT governance polices were created prior to the introduction of SOA in their respected organization. This can create a sense of the Wild West for developers working on projects related to SOA. This is due to the fact that a lot of the standards and polices implemented by enterprise IT governing boards were initially for developing under the “Code and Go” paradigm and do not take in to account idiosyncrasies found in the SOA/integration based development. As IT governance moves forward its focus should aim more for “Develop to Integrate” versus “Code and Go” philosophies. Examples of “Develop to Integrate” Philosophy: Defining preferred data transfer methodologies (XML vs. JSON), and when to use them Updating security best practices for exposing public services based on existing standard security policies Define when to use create new SOA project vs. implementing localized components that could be reused elsewhere in the enterprise.

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  • the OpenJDK group at Oracle is growing

    - by john.rose
    p.p1 {margin: 0.0px 0.0px 12.0px 0.0px; font: 12.0px Times} span.s1 {text-decoration: underline ; color: #0000ee} The OpenJDK software development team at Oracle is hiring. To get an idea of what we’re looking for, go to the Oracle recruitment portal and enter the Keywords “Java Platform Group” and the Location Keywords “Santa Clara”.  (We are a global engineering group based in Santa Clara.)  It’s pretty obvious what we are working on; just dive into a public OpenJDK repository or OpenJDK mailing list. Here is a typical job description from the current crop of requisitions: The Java Platform group is looking for an experienced, passionate and highly-motivated Software Engineer to join our world class development effort. Our team is responsible for delivering the Java Virtual Machine that is used by millions of developers. We are looking for a development engineer with a strong technical background and thorough understanding of the Java Virtual Machine, Java execution runtime, classloading, garbage collection, JIT compiler, serviceability and a desire to drive innovations. As a member of the software engineering division, you will take an active role in the definition and evolution of standard practices and procedures. You will be responsible for defining and developing software for tasks associated with the developing, designing and debugging of software applications or operating systems. Work is non-routine and very complex, involving the application of advanced technical/business skills in area of specialization. Leading contributor individually and as a team member, providing direction and mentoring to others. BS or MS degree or equivalent experience relevant to functional area. 7 years of software engineering or related experience.

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  • What triggered the popularity of lambda functions in modern mainstream programming languages?

    - by Giorgio
    In the last few years anonymous functions (AKA lambda functions) have become a very popular language construct and almost every major / mainstream programming language has introduced them or is planned to introduce them in an upcoming revision of the standard. Yet, anonymous functions are a very old and very well-known concept in Mathematics and Computer Science (invented by the mathematician Alonzo Church around 1936, and used by the Lisp programming language since 1958, see e.g. here). So why didn't today's mainstream programming languages (many of which originated 15 to 20 years ago) support lambda functions from the very beginning and only introduced them later? And what triggered the massive adoption of anonymous functions in the last few years? Is there some specific event, new requirement or programming technique that started this phenomenon? IMPORTANT NOTE The focus of this question is the introduction of anonymous functions in modern, main-stream (and therefore, maybe with a few exceptions, non functional) languages. Also, note that anonymous functions (blocks) are present in Smalltalk, which is not a functional language, and that normal named functions have been present even in procedural languages like C and Pascal for a long time. Please do not overgeneralize your answers by speaking about "the adoption of the functional paradigm and its benefits", because this is not the topic of the question.

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  • We'll be at QCon San Francisco!

    - by Carlos Chang
    Oracle Technology Network is a Platinum sponsor at QCon San Francisco. Don’t miss these great developer focused sessions: Shay Shmeltzer - How we simplified Web, Mobile and Cloud development for our own developers? - the Oracle Story Over the past several years, Oracle has beendeveloping a new set of enterprise applications in what is probably one of the largest Java based development project in the world. How do you take 3000 developers and make them productive? How do you insure the delivery of cutting edge UIs for both Mobile and Web channels? How do you enable Cloud based development and deployment? Come and learn how we did it at Oracle, and see how the same technologies and methodologies can apply to your development efforts. Dan Smith - Project Lambda in Java 8 Java SE 8 will include major enhancements to the Java Programming Language and its core libraries.  This suite of new features, known as Project Lambda in the OpenJDK community, includes lambda expressions, default methods, and parallel collections (and much more!).  The result will be a next-generation Java programming experience with more flexibility and better abstractions.   This talk will introduce the new Java features and offer a behind-the-scenes view of how they evolved and why they work the way that they do. Arun Gupta - JSR 356: Building HTML5 WebSocket Applications in Java The family of HTML5 technologies has pushed the pendulum away from rich client technologies and toward ever-more-capable Web clients running on today’s browsers. In particular, WebSocket brings new opportunities for efficient peer-to-peer communication, providing the basis for a new generation of interactive and “live” Web applications. This session examines the efforts under way to support WebSocket in the Java programming model, from its base-level integration in the Java Servlet and Java EE containers to a new, easy-to-use API and toolset that are destined to become part of the standard Java platform. The complete conference schedule is here: http://qconsf.com/sf2012/schedule/wednesday.jsp But wait, there’s more! At the Oracle booth, we’ll also be covering: Oracle ADF Mobile Oracle Developer Cloud Service Oracle ADF Essentials NetBeans Project Easel Hope to see you there! 

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  • Videos: Getting Started with Java Embedded

    - by Tori Wieldt
    Are you a Java developer? That means you can write applications for embedded processors! There are new six new videos up on the YouTube/Java channel that you can watch to get more information. To get an overview, watch James Allen of Oracle Global Business Development give OTN a tour of the Oracle booth at ARM Techcon. He also explains the huge opportunity for Java in the embedded space. These videos from Oracle Engineering show you how to leverage your knowledge to seamlessly develop in a space that is really taking off. Java SE Embedded Development Made Easy, Part 1 This video demonstrates how developers already familiar with the Java SE development paradigm can leverage their knowledge to seamlessly develop on very capable embedded processors. Part one of a two-part series. Java SE Embedded Development Made Easy, Part 2 This video demonstrates how developers already familiar with the Java SE development paradigm can leverage their knowledge to seamlessly develop on very capable embedded processors. Part two of a two-part series. Mobile Database Synchronization - Healthcare Demonstration This video demonstrates how a good portion of Oracle's embedded technologies (Java SE-Embedded, Berkeley DB, Database Mobile Server) can be applied to a medical application. Tomcat Micro Cluster See how multiple embedded devices installed with Java Standard Edition HotSpot for Armv5/Linux and Apache Tomcat can be configured as a micro cluster. Java Embedded Partnerships Kevin Smith of Oracle Technical Business Development explains what's new for partners and Java developers in the embedded space. Learn how you can start prototyping for Qualcomm's new Orion board before it's available. (Sorry about the video quality, the booth lights were weird.)   Visit the YouTube/Java channel for other great Java videos. <fade to black>

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  • Best way to implement mouse-based movement in MMOG

    - by fiftyeight
    I want to design an MMO where players click the destination they want to walk to with their mouse and the character moves there, similar to Runescape in this manner. I think it should be easier than keyboard movement since the client can simply send the server the destination each time the player clicks on a destination. The main thing I'm trying to decide is what to do when there are obstacles in the way. It's no problem to implement a simple path-finding solution on the client, the question is if the server will do path-finding as well, since it'll probably take too much Computation power from the server. What I though is that when there is an obstacle the client will send only the first coordinate it plans to go to and then when he gets there he'll send the next coordinate automatically. For example if there is a rock in the way the character will decide on a route that is made of two destinations so it goes around the rock and when it arrives at the first destination it sends the next coordinate. That way if the player changes destination is the middle he won't send unnecessary information. Is this a good way to implement it and is there a standard way MMOGs usually do it? EDIT: I should also mention that the server will make sure all movements are legal and there aren't any walls in the way etc. In the way I wrote it should be quite easy since all movements will be sent in straight lines so the server will just check there aren't any obstacles along that line.

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