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  • Call for authors for new eBook on the Windows Azure Platform

    - by Eric Nelson
    I intend to pull together a FREE eBook on the Windows Azure Platform – but I need your help to make it rock! If you have detailed experience of any aspect of the Windows Azure Platform and can spare a few hours of time to turn that into a short article (400 to 800 words) then please get in touch. This is not a big commitment but my suspicion is the end result will make for a cracking good read. I am hoping for a mix – everything from lessons learnt from early adopters to introductions to elements of the platform to getting technologies such as Ruby up and running on Azure. 10 to 20 articles sound about right – which means I am after 10 to 20 authors :) All I need from you right now is: One or two suggestions of topics you would like to cover A pointer to any example of your previous work – which could be as simple as a blog post or a work document. For simplicity, just drop me an email direct to eric.nelson A@T microsoft.com. BIG THANKS! Eric The provisional dates are: Confirm authors and topics by 3rd May Get first draft from all authors by 10th May Complete reviews by 17th May Final versions by 24th May Published by 31st May And finally, an example: To give you an idea of what I have in mind, check out the eBook we pulled together last December which has had several thousand downloads. However I’m thinking of making this one a little bit more fun/informal. More on that later. UK MSDN Flash eBook Best Technical Articles #2 - ericnel Related Links: Spread the word – 6 Weeks of FREE Azure Training UK Azure Online Community – join today. UK Windows Azure Site Start working with Windows Azure

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  • Internet Explorer 9 Preview 2 link + webcasts for developers

    - by Eric Nelson
    At Web Directions last week in London (10th and 11th June 2010) I promised several folks I would put up a blog post to more information on IE 9.0. True to my word (albeit a little later than I had hoped), here is what I was thinking of: Install First up, Install Preview 2 and try out the demos I was showing at the conference. Remember that IE9 Preview installs side by side with IE8/7 etc. It is not a beta nor is it intended to be a full browser. It is a … preview :-)   Including good old SVG-oids :-) Learn And then check out the following webcasts which were recorded in March this year at MIX: In-Depth Look At Internet Explorer 9 Presenter:  Ted Johnson & John Hrvatin VisitMIX URL: http://live.visitmix.com/MIX10/Sessions/CL28 Slides: Download Videos: MP4 Small WMV Large WMV High Performance Best Practices For Web Sites Presenter: Jason Weber VisitMIX URL: http://live.visitmix.com/MIX10/Sessions/CL29 Slides: Download Videos: MP4 Small WMV Large WMV HTML5: Cross Browser Best Practices Presenter: Tony Ross VisitMIX URL: http://live.visitmix.com/MIX10/Sessions/CL27 Slides: Download Videos: MP4 Small WMV Large WMV Internet Explorer Developer Tools Presenter: Jon Seitel VisitMIX URL: http://live.visitmix.com/MIX10/Sessions/FT51 Slides: Download Videos: MP4 Small WMV Large WMV SVG: The Past, Present And Future of Vector Graphics For The Web Presenter: Patrick Dengler, Doug Schepers VisitMIX URL: http://live.visitmix.com/MIX10/Sessions/EX30 Slides: Download Videos: MP4 Small WMV Large WMV Day 2 Keynote containing IE9 Presenter: Dean Hachamovitch VisitMIX URL: http://live.visitmix.com/MIX10/Sessions/KEY02 Slides: Download Videos: MP4 Small WMV Large WMV

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  • ArchBeat Link-o-Rama for 2012-09-20

    - by Bob Rhubart
    Attend OTN Architect Day – by Architects, for Architects – October 25 You won't need 3D glasses to take in these live presentations (8 sessions, two tracks) on Cloud computing, SOA, and engineered systems. And the ticket price is: Zero. Nothing. Absolutely free. Register now for Oracle Technology Network Architect Day in Los Angeles. Thursday October 25, 2012, 8:00am – 5:00pm Sofitel Los Angeles8555 Beverly BoulevardLos Angeles, CA 90048 Loving VirtualBox 4.2… | The ORACLE-BASE Blog Is it wrong for a man to love a technology? Oracle ACE Director Tim Hall has several very good reasons for his feelings… Running RichFaces on WebLogic 12c | Markus Eisele "With all the JMS magic and the different provider checks in the showcase this has become some kind of a challenge to simply build and deploy it," says Oracle ACE Director Markus Eisele. His detailed post will help you to meet that challenge. Oracle ADF Coverage at OOW | Frank Nimphius Frank Nimphius shares a comprehensive and well-organized list of Oracle ADF sessions and activities scheduled for Oracle OpenWorld in San Francisco. OIM 11g R2 Catalog Customization Example | Daniel Gralewski Oracle Fusion Middleware A-Team member Daniel Gralewski's post shows "how OIM catalog can be customized by using OIM UI capabilities such as managed beans and EL expressions. The post first describes the use case and the solution to address the use case; then it describes the solution details as well as provides links to the artifacts." New Book: Oracle BPM Suite 11g: Advanced BPMN Topics | Mark Nelson Redstack blogger Mark Nelson shares an overview of Oracle BPM Suite 11g: Advanced BPMN Topics, the new book he co-authored with Tanya Williams. Nelson describes the book as "a concise presentation of both theory and practical examples of the areas of BPMN where we have encountered the most widespread confusion and misunderstanding." Thought for the Day "I strive for an architecture from which nothing can be taken away." — Helmut Jahn Source: Brainy Quote

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  • Determining what files are considered open in Mac OSX

    - by Doug
    Hi all; Apologies if this has been discussed previously... I did a stack overflow and google search but probably didn't use the right keywords. Anyway, is there an easy way to determine what files are open on Mac OS X? I had an issue in which I could not unmount a firewire HD until I closed all running apps. Turns out keychain access had a reference to a file on the HD, but it begged the question: how to find out what files are open and what app (or apps) has the file open? Thanks in advance and again apologies if this has been covered previously. Doug.

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  • How Can I assign an IP address to my virtual Windows Server, so that I can start using it almost as a VPS?

    - by Nelson Symonds
    We are a small office set up with two PC's out of which one of my PCs runs 24hrs. Its almost equivalent to a small server, but right now we're in need of a server which is why I am planning to keep my machine as well as a server into a single PC. I've used VMware Workstation to create a powerful Windows Server 2008 within my PC and I want to attach it to my Network Switch through the same PC where I am hosting it. I want to use it almost like a physical server with an IP address and everything so that I can connect from one Pc to the Server directly or my applications can connect to Server straight with the IP address. How should I do this? Step by step instructions would be appreciated. Thanks in Advance, Best regards Nelson

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  • Deploying Pylons with uWSGI

    - by Doug Farrell
    Hi all, We're trying to move our intranet to Pylons. My boss is trying to set up Pylons to use uWSGI behind Apache so he can set up multiple, independent applications. However, he's having a difficult time getting it set up, with some apparent code problems in the C source code for uWSGI. Does anyone have any suggestions for how to deploy Pylons applications that might help us out? Thanks, Doug

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  • Couple o' quick questions on Apache Lucene

    - by Doug
    -- I don't want to start any religious wars, but a quick google search indicates that Apache Lucene is the preferred open source tool for indexing and searching. Are there others? -- What file format does Lucene use to store its index file(s)? Thank is advance. Doug

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  • adding opacity's of the PhoneAccentBrush to a Silverlight toolbox pie chart

    - by Doug
    Hi there, i am working on a windows phone application and i am using the pie chart - i am relatively new to the silverlight control toolbox. i want to make my pie chart use different opacity's of the PhoneAccentBrush as its colour pallete. (ie if the accent colour is green then i use the green and then a 0.8,0.6,0.4,0.2 opacity of the colour as my pie charts pallete) i have tried a few things, but none of them worked - has anyone accomplished this and if so how? thanks in advance Doug

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  • Using the Google Analytics Export API to get a websites trend

    - by Doug
    hi there, i am working on an application that uses the Google Analytics Export API and i am trying to get the "Trend" result that Google shows against each of your site accounts as a percentage ie UP 35.04% or DOWN 16.02% How/where do they get this figure and is it available in the API somewhere. i have tried comparing averages of last month to this month/first week of the period vs last week of the period etc, but i cannot seem to get the same numbers that Google provides. any ideas? thanks in advance Doug

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  • Rails 3.0.3 and Polyglot Gem problem

    - by user557417
    Hello all. I hope you can help me. I had a rails app running locally, and also uploaded and running on Heroku. All was well. Last week, I started work again and ran into a snag. At the beginning of my day, I opened up Terminal and ran 'rails s' to start the local server. I received this error: doug-naegeles-macbook-pro-17:elig_check dougnaegele$ rails s /Library/Ruby/Gems/1.8/gems/bundler-1.0.7/lib/bundler/resolver.rb:129:in resolve': Could not find gem 'polyglot', required by 'rails (= 3.0.3)', in any of the sources (Bundler::VersionConflict) from /Library/Ruby/Gems/1.8/gems/bundler-1.0.7/lib/bundler/resolver.rb:127:incatch' from /Library/Ruby/Gems/1.8/gems/bundler-1.0.7/lib/bundler/resolver.rb:127:in resolve' from /Library/Ruby/Gems/1.8/gems/bundler-1.0.7/lib/bundler/definition.rb:151:inresolve' from /Library/Ruby/Gems/1.8/gems/bundler-1.0.7/lib/bundler/definition.rb:90:in specs' from /Library/Ruby/Gems/1.8/gems/bundler-1.0.7/lib/bundler/definition.rb:135:inspecs_for' from /Library/Ruby/Gems/1.8/gems/bundler-1.0.7/lib/bundler/definition.rb:124:in requested_specs' from /Library/Ruby/Gems/1.8/gems/bundler-1.0.7/lib/bundler/environment.rb:23:inrequested_specs' from /Library/Ruby/Gems/1.8/gems/bundler-1.0.7/lib/bundler/runtime.rb:11:in setup' from /Library/Ruby/Gems/1.8/gems/bundler-1.0.7/lib/bundler.rb:100:insetup' from /Users/dougnaegele/Sites/elig_check/config/boot.rb:8 from script/rails:5:in `require' from script/rails:5 When I run 'gem list'..i can see Polyglot listed: doug-naegeles-macbook-pro-17:elig_check dougnaegele$ gem list * LOCAL GEMS * abstract (1.0.0) actionmailer (3.0.3, 2.3.5, 2.2.2, 1.3.6) actionpack (3.0.3, 2.3.5, 2.2.2, 1.13.6) actionwebservice (1.2.6) activemodel (3.0.3) activerecord (3.0.3, 2.3.5, 2.2.2, 1.15.6) activeresource (3.0.3, 2.3.5, 2.2.2) activesupport (3.0.3, 2.3.5, 2.2.2, 1.4.4) acts_as_ferret (0.5.2, 0.4.3) arel (2.0.6, 2.0.4) authlogic (2.1.6) blythedunham-sms_on_rails (0.1.0) builder (3.0.0, 2.1.2) bundler (1.0.7) capistrano (2.5.19, 2.5.2) cgi_multipart_eof_fix (2.5.0) color (1.4.1) configuration (1.2.0) crack (0.1.8) daemons (1.1.0, 1.0.10) derailed-ziya (2.1.5) dnssd (1.4, 0.6.0) erubis (2.6.6) fastthread (1.0.7, 1.0.1) fcgi (0.8.8, 0.8.7) ferret (0.11.6) gem_plugin (0.2.3) googlecharts (1.6.0) heroku (1.14.10, 1.14.3) highline (1.6.1, 1.5.0) hpricot (0.8.3, 0.6.164) httparty (0.6.1) i18n (0.5.0, 0.4.2) jk-ferret (0.11.8.2) json_pure (1.4.6) launchy (0.3.7) libxml-ruby (1.1.4, 1.1.2) little-plugger (1.1.2) logging (1.4.3) mail (2.2.12, 2.2.10) mattetti-googlecharts (1.4.0) mime-types (1.16) mongrel (1.1.5) mysql (2.8.1) needle (1.3.0) net-scp (1.0.4, 1.0.1) net-sftp (2.0.5, 2.0.1, 1.1.1) net-ssh (2.0.23, 2.0.4, 1.1.4) net-ssh-gateway (1.0.1, 1.0.0) nifty-generators (0.4.2) polyglot (0.3.1) rack (1.2.1, 1.0.1) rack-mount (0.6.13) rack-test (0.5.6) rails (3.0.3, 2.3.5, 2.2.2, 1.2.6) railties (3.0.3) rake (0.8.7, 0.8.3) RedCloth (4.2.3, 4.1.1) rest-client (1.6.1) ruby-openid (2.1.8, 2.1.2) ruby-yadis (0.3.4) rubygems-update (1.3.7, 1.3.6) rubynode (0.1.5) sequel (3.18.0, 3.17.0) sinatra (1.1.0, 1.0) sqlite3-ruby (1.3.2, 1.2.5, 1.2.4) static_record_cache (0.2.0) taps (0.3.14) termios (0.9.4) thor (0.14.6) tilt (1.1) treetop (1.4.9) twilio (2.9.0) twiliolib (2.0.7) tzinfo (0.3.23) xmpp4r (0.5, 0.4) When I run 'gem sources' I get this: doug-naegeles-macbook-pro-17:elig_check dougnaegele$ gem sources * CURRENT SOURCES * rubygems.org/ gems.github.com gems.github.com gems.github.com/ gems.github.com gems.rubyforge.org Which looks right -- that's where Polyglot lives. When I run 'bundle install' I get this: doug-naegeles-macbook-pro-17:elig_check dougnaegele$ bundle install Fetching source index for http://rubygems.org/ Could not find gem 'polyglot', required by 'rails (= 3.0.3)', in any of the sources Any idea? I've tried to reinstall the gem, run 'bundle install' etc. No luck. (I have a suspicion that this - rails (3.0.3, 2.3.5, 2.2.2, 1.2.6) may be the problem, but I don't want to go down that road just yet. I have apps running on 2.3.5 that have not been refactored for rails 3.0) Thanks in advance! Doug

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  • How can I get full filenames from Git difftool (for Microsoft Word "Compare Documents" feature)?

    - by Doug
    I am using the latest version of Git (1.6.6) on a Mac. My wife wants to use Git to manage her fiction writing as long as she can still use Microsoft Word 2008 (Mac). Instead of pushing her into saving everything as plain text, I would like to use Git Difftool to pass the files to Word and use Word's Compare Documents feature. She wouldn't be able to use Git Diff since Word docs are binary files but she could still use Git Difftool. I have written an Applescript which takes two filenames in this format: /Users/foo/Documents/my_novel.docx and opens Word to do the file comparison. However, Git Difftool seems to only pass the bare filenames (e.g. my_novel.docx) as parameters. Is there anyway to get the full filenames from Git Difftool? Thanks, Doug

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  • Silverlight 4 - elevated permission *inside* the browser

    - by Doug
    I know Silverlight 4 can handle elevated permissions outside the browser. Is there a way to accomplish this inside the browser? I need to make a folder/file upload manager that gives a better user experience than the standard , and I'd like to implement it in Silverlight. I know Java has an option to gain elevated permissions, but you have to attach a signed certificate to your app. Does Silverlight 4 have a similar option - to gain elevated permissions by attaching a signed certificate (after warning the user, of course)? -Doug

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  • Unable to remove master -> child subform links in microsoft access 2003

    - by Doug
    Hi, I am having an issue removing the master - child link fields in an access subreport data form. I have tried every avenue to remove them, using the properties window of the subreport as well as the link wizard. I have also deleted the subreport from the database and then gone as far as re-importing the existing objects into a new access instance. As soon as I re-added the subform back in and name it the same name the link fields show back up. Something is apparently corrupt, but I have run out of ideas at this point on how to clear them. Any Ideas would be appreciated. Thanks Doug

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  • How can I coordinate code review tool and RCS (specifically git)

    - by Chris Nelson
    We're committed to git for code management. We're trying to find a tool that will help us systematize code reviews. We're considering Gerrit and Code Collaborator but would welcome other suggestions. We're having a problem answering the question, "How do we know every commit was reviewed?" (Or "What commits have yet to be reviewed?") One answer would be to submit every commit or every push for review and track incomplete reviews in the review tool. I'm not entirely happy with relying on a another tool -- especially if it's not open source -- to tell us this. What seems to be a better answer is to rely on sign offs in git (e.g., "Signed-off-by: Chris Nelson") and use a hook in the review tool to sign off commits on behalf of the reviewer. And advantage of this is if we use some other review mechanism for some commits, we have just one place to look for results. One problem with this is that we can't require review before push because the review tool is unlikely to have access to the developer's private repository clone to add the sign-off. Any ideas on integrating code review with code management to achieve ease of use and high visibility of unreviewed changes?

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  • Pass a single boolean from an Android App to a libgdx game

    - by Doug Henning
    I'm writing an Android application that needs to pass a single boolean into an Android game that I am also writing. The idea is that the user does something in the App which will affect how the game operates. This is tricky with LIBGDX since I need to get the bool value into the Java files of the game, but of course, you can't call Android specific things from within LIBGDX's main Java files. I tried using an intent but of course the same problem persists. I can get the boolean into the MainActivity.Java of the android output of the game, but can't pass it along any further since the android output and the main java files don't know about each other. I have seen a few tutorials that explain how to use set up an interface in the LIBGDX java files that can call android things. This seems like wild overkill for what I want to do. I've been trying to use Android's Shared Preferences with LIBGDX's Gdx.app.getPreferences, but I can't make it work. Anyhelp would be MUCH appreciated. I've set up two hello world applications. One is a standard Android app, with a single button that is supposed to write "true" into the shared preferences. The other is a standard LIBGDX hello world that is supposed to do nothing but check that bool when launched and if true display one image to the screen, if false, display a different one. Here's the relevant bit of the Android code: import android.preference.PreferenceManager; public void onClick(View view) { if (view == this.boolButton){ final String PREF_FILE_NAME = "myBool"; SharedPreferences preferences = getSharedPreferences(PREF_FILE_NAME, MODE_WORLD_WRITEABLE); SharedPreferences.Editor editor = preferences.edit(); editor.putBoolean("myBool", true); editor.commit(); } } And here's the relevant bit of the code from the LIBGDX main file: Preferences prefs = Gdx.app.getPreferences("myBool"); boolean switcher = prefs.getBoolean("myBool"); if(switcher == true){ texture = new Texture(Gdx.files.internal("data/worked512.png")); prefs.putBoolean("myBool", false); } else { texture = new Texture(Gdx.files.internal("data/libgdx.png")); } Everything compiles fine, it just doesn't work. I've spent HOURS googling trying to find a way to pass this single boolean from android into a LIBGDX main and I'm totally stumped. Thanks for your help.

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  • Q&amp;A: Can you develop for the Windows Azure Platform using Windows XP?

    - by Eric Nelson
    This question has come up several times recently as we take several hundred UK developers through 6 Weeks of Windows Azure training (sorry – we are full). Short answer: In the main, yes Longer answer: The question is sparked by the requirements as stated on the Windows Azure SDK download page. Namely: Supported Operating Systems: Windows 7; Windows Vista; Windows Vista 64-bit Editions Service Pack 1; Windows Vista Business; Windows Vista Business 64-bit edition; Windows Vista Enterprise; Windows Vista Enterprise 64-bit edition; Windows Vista Home Premium; Windows Vista Home Premium 64-bit edition; Windows Vista Service Pack 1; Windows Vista Service Pack 2; Windows Vista Ultimate; Windows Vista Ultimate 64-bit edition Notice there is no mention of Windows XP. However things are not quite that simple. The Windows Azure Platform consists of three released technologies Windows Azure SQL Azure Windows Azure platform AppFabric The Windows Azure SDK is only for one of the three technologies, Windows Azure. What about SQL Azure and AppFabric? Well it turns out that you can develop for both of these technologies just fine with Windows XP: SQL Azure development is really just SQL Server development with a few gotchas – and for local development you can simply use SQL Server 2008 R2 Express (other versions will also work). AppFabric also has no local simulation environment and the SDK will install fine on Windows XP (SDK download) Actually it is also possible to do Windows Azure development on Windows XP if you are willing to always work directly against the real Azure cloud running in Microsoft datacentres. However in practice this would be painful and time consuming, hence why the Windows Azure SDK installs a local simulation environment. Therefore if you want to develop for Windows Azure I would recommend you either upgrade from Windows XP to Windows 7 or… you use a virtual machine running Windows 7. If this is a temporary requirement, then you could consider building a virtual machine using the Windows 7 Enterprise 90 day eval. Or you could download a pre-configured VHD – but I can’t quite find the link for a Windows 7 VHD. Pointers welcomed. Thanks.

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  • Pass a single boolean from an Android App to a LIBGDK game

    - by Doug Henning
    I'm writing an Android application that needs to pass a single boolean into an Android game that I am also writing. The idea is that the user does something in the App which will affect how the game operates. This is tricky with LIBGDX since I need to get the bool value into the Java files of the game, but of course, you can't call Android specific things from within LIBGDX's main Java files. I tried using an intent but of course the same problem persists. I can get the boolean into the MainActivity.Java of the android output of the game, but can't pass it along any further since the android output and the main java files don't know about each other. I have seen a few tutorials that explain how to use set up an interface in the LIBGDX java files that can call android things. This seems like wild overkill for what I want to do. I've been trying to use Android's Shared Preferences with LIBGDX's Gdx.app.getPreferences, but I can't make it work. Anyhelp would be MUCH appreciated. I've set up two hello world applications. One is a standard Android app, with a single button that is supposed to write "true" into the shared preferences. The other is a standard LIBGDX hello world that is supposed to do nothing but check that bool when launched and if true display one image to the screen, if false, display a different one. Here's the relevant bit of the Android code: import android.preference.PreferenceManager; public void onClick(View view) { if (view == this.boolButton){ final String PREF_FILE_NAME = "myBool"; SharedPreferences preferences = getSharedPreferences(PREF_FILE_NAME, MODE_WORLD_WRITEABLE); SharedPreferences.Editor editor = preferences.edit(); editor.putBoolean("myBool", true); editor.commit(); } } And here's the relevant bit of the code from the LIBGDX main file: Preferences prefs = Gdx.app.getPreferences("myBool"); boolean switcher = prefs.getBoolean("myBool"); if(switcher == true){ texture = new Texture(Gdx.files.internal("data/worked512.png")); prefs.putBoolean("myBool", false); } else { texture = new Texture(Gdx.files.internal("data/libgdx.png")); } Everything compiles fine, it just doesn't work. I've spent HOURS googling trying to find a way to pass this single boolean from android into a LIBGDX main and I'm totally stumped. Thanks for your help.

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  • 5 Steps to getting started with IronRuby

    - by Eric Nelson
    IronRuby is a Open Source implementation of the Ruby programming language for .NET, heavily relying on Microsoft's Dynamic Language Runtime. The project's #1 goal is to be a true Ruby implementation, meaning it runs existing Ruby code. Check out this summary of using the Ruby standard library and 3rd party libraries in IronRuby. IronRuby has tight integration with .NET, so any .NET types can be used from IronRuby and the IronRuby runtime can be embedded into any .NET application. These 5 steps should get you nicely up and running on IronRuby – OR … you could just watch a video session from the lead developer which took place earlier this month (March 2010 - 60mins). But the 5 steps will be quicker :-) Step 1 – Install IronRuby :-) You can install IronRuby automatically using an MSI or manually. For simplicity I would recommend the MSI install. TIP: As of the 25th of March IronRuby has not quite shipped. The download above is a Release Candidate (RC) which means it is still undergoing final testing by the team. You will need to uninstall this version (RC3) once the final release is available. The good news is that uninstalling IronRuby RC3 will work without a hitch as the MSI does relatively little. Step 2 – Install an IronRuby friendly editor You will need to Install an editor to work with IronRuby as there is no designer support for IronRuby inside Visual Studio. There are many editors to choose from but I would recommend you either went with: SciTE (Download the MSI): This is a lightweight text editor which is simple to get up and running. SciTE understands Ruby syntax and allows you to easily run IronRuby code within the editor with a small change to the config file. SharpDevelop 3.2 (Download the MSI): This is an open source development environment for C#, VB, Boo and now IronRuby. IronRuby support is new but it does include integrated debugging. You might also want to check out the main site for SharpDevelop. TIP: There are commercial tools for Ruby development which offer richer support such as intellisense.. They can be coerced into working with IronRuby. A good one to start with is RubyMine which needs some small changes to make it work with IronRuby. Step 3 – Run the IronRuby Tutorial Run through the IronRuby tutorial which is included in the IronRuby download. It covers off the basics of the Ruby languages and how IronRuby integrates with .NET. In a typical install it will end up at C:\Program Files\IronRuby 0.9.4.0\Samples\Tutorial. Which will give you the tutorial implemented in .NET and Ruby. TIP: You might also want to check out these two introductory posts Using IronRuby and .NET to produce the ‘Hello World of WPF’ and What's IronRuby, and how do I put it on Rails? Step 4 – Get some good books to read Get a great book on Ruby and IronRuby. There are several free ebooks on Ruby which will help you learn the language. The little book of Ruby is a good place to start. I would also recommend you purchase IronRuby Unleashed (Buy on Amazon UK | Buy on Amazon USA). You might also want to check out this mini-review. Other books are due out soon including IronRuby in Action. TIP: Also check out the official documentation for using .NET from IronRuby. Step 5 – Keep an eye on the team blogs Keep an eye on the IronRuby team blogs including Jimmy Schementi, Jim Deville and Tomas Matousek (full list) TIP: And keep a watch out for the final release of IronRuby – due anytime soon!

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  • GuestPost: Unit Testing Entity Framework (v1) Dependent Code using TypeMock Isolator

    - by Eric Nelson
    Time for another guest post (check out others in the series), this time bringing together the world of mocking with the world of Entity Framework. A big thanks to Moses for agreeing to do this. Unit Testing Entity Framework Dependent Code using TypeMock Isolator by Muhammad Mosa Introduction Unit testing data access code in my opinion is a challenging thing. Let us consider unit tests and integration tests. In integration tests you are allowed to have environmental dependencies such as a physical database connection to insert, update, delete or retrieve your data. However when performing unit tests it is often much more efficient and productive to remove environmental dependencies. Instead you will need to fake these dependencies. Faking a database (also known as mocking) can be relatively straight forward but the version of Entity Framework released with .Net 3.5 SP1 has a number of implementation specifics which actually makes faking the existence of a database quite difficult. Faking Entity Framework As mentioned earlier, to effectively unit test you will need to fake/simulate Entity Framework calls to the database. There are many free open source mocking frameworks that can help you achieve this but it will require additional effort to overcome & workaround a number of limitations in those frameworks. Examples of these limitations include: Not able to fake calls to non virtual methods Not able to fake sealed classes Not able to fake LINQ to Entities queries (replace database calls with in-memory collection calls) There is a mocking framework which is flexible enough to handle limitations such as those above. The commercially available TypeMock Isolator can do the job for you with less code and ultimately more readable unit tests. I’m going to demonstrate tackling one of those limitations using MoQ as my mocking framework. Then I will tackle the same issue using TypeMock Isolator. Mocking Entity Framework with MoQ One basic need when faking Entity Framework is to fake the ObjectContext. This cannot be done by passing any connection string. You have to pass a correct Entity Framework connection string that specifies CSDL, SSDL and MSL locations along with a provider connection string. Assuming we are going to do that, we’ll explore another limitation. The limitation we are going to face now is related to not being able to fake calls to non-virtual/overridable members with MoQ. I have the following repository method that adds an EntityObject (instance of a Blog entity) to Blogs entity set in an ObjectContext. public override void Add(Blog blog) { if(BlogContext.Blogs.Any(b=>b.Name == blog.Name)) { throw new InvalidOperationException("Blog with same name already exists!"); } BlogContext.AddToBlogs(blog); } The method does a very simple check that the name of the new Blog entity instance doesn’t exist. This is done through the simple LINQ query above. If the blog doesn’t already exist it simply adds it to the current context to be saved when SaveChanges of the ObjectContext instance (e.g. BlogContext) is called. However, if a blog with the same name exits, and exception (InvalideOperationException) will be thrown. Let us now create a unit test for the Add method using MoQ. [TestMethod] [ExpectedException(typeof(InvalidOperationException))] public void Add_Should_Throw_InvalidOperationException_When_Blog_With_Same_Name_Already_Exits() { //(1) We shouldn't depend on configuration when doing unit tests! But, //its a workaround to fake the ObjectContext string connectionString = ConfigurationManager .ConnectionStrings["MyBlogConnString"] .ConnectionString; //(2) Arrange: Fake ObjectContext var fakeContext = new Mock<MyBlogContext>(connectionString); //(3) Next Line will pass, as ObjectContext now can be faked with proper connection string var repo = new BlogRepository(fakeContext.Object); //(4) Create fake ObjectQuery<Blog>. Will be used to substitute MyBlogContext.Blogs property var fakeObjectQuery = new Mock<ObjectQuery<Blog>>("[Blogs]", fakeContext.Object); //(5) Arrange: Set Expectations //Next line will throw an exception by MoQ: //System.ArgumentException: Invalid setup on a non-overridable member fakeContext.SetupGet(c=>c.Blogs).Returns(fakeObjectQuery.Object); fakeObjectQuery.Setup(q => q.Any(b => b.Name == "NewBlog")).Returns(true); //Act repo.Add(new Blog { Name = "NewBlog" }); } This test method is checking to see if the correct exception ([ExpectedException(typeof(InvalidOperationException))]) is thrown when a developer attempts to Add a blog with a name that’s already exists. On (1) a connection string is initialized from configuration file. To retrieve the full connection string. On (2) a fake ObjectContext is being created. The ObjectContext here is MyBlogContext and its being created using this var fakeContext = new Mock<MyBlogContext>(connectionString); This way a fake context is being created using MoQ. On (3) a BlogRepository instance is created. BlogRepository has dependency on generate Entity Framework ObjectContext, MyObjectContext. And so the fake context is passed to the constructor. var repo = new BlogRepository(fakeContext.Object); On (4) a fake instance of ObjectQuery<Blog> is being created to use as a substitute to MyObjectContext.Blogs property as we will see in (5). On (5) setup an expectation for calling Blogs property of MyBlogContext and substitute the return result with the fake ObjectQuery<Blog> instance created on (4). When you run this test it will fail with MoQ throwing an exception because of this line: fakeContext.SetupGet(c=>c.Blogs).Returns(fakeObjectQuery.Object); This happens because the generate property MyBlogContext.Blogs is not virtual/overridable. And assuming it is virtual or you managed to make it virtual it will fail at the following line throwing the same exception: fakeObjectQuery.Setup(q => q.Any(b => b.Name == "NewBlog")).Returns(true); This time the test will fail because the Any extension method is not virtual/overridable. You won’t be able to replace ObjectQuery<Blog> with fake in memory collection to test your LINQ to Entities queries. Now lets see how replacing MoQ with TypeMock Isolator can help. Mocking Entity Framework with TypeMock Isolator The following is the same test method we had above for MoQ but this time implemented using TypeMock Isolator: [TestMethod] [ExpectedException(typeof(InvalidOperationException))] public void Add_New_Blog_That_Already_Exists_Should_Throw_InvalidOperationException() { //(1) Create fake in memory collection of blogs var fakeInMemoryBlogs = new List<Blog> {new Blog {Name = "FakeBlog"}}; //(2) create fake context var fakeContext = Isolate.Fake.Instance<MyBlogContext>(); //(3) Setup expected call to MyBlogContext.Blogs property through the fake context Isolate.WhenCalled(() => fakeContext.Blogs) .WillReturnCollectionValuesOf(fakeInMemoryBlogs.AsQueryable()); //(4) Create new blog with a name that already exits in the fake in memory collection in (1) var blog = new Blog {Name = "FakeBlog"}; //(5) Instantiate instance of BlogRepository (Class under test) var repo = new BlogRepository(fakeContext); //(6) Acting by adding the newly created blog () repo.Add(blog); } When running the above test method it will pass as the Add method of BlogRepository is going to throw an InvalidOperationException which is the expected behaviour. Nothing prevents us from faking out the database interaction! Even faking ObjectContext  at (2) didn’t require a connection string. On (3) Isolator sets up a faking result for MyBlogContext.Blogs when its being called through the fake instance fakeContext created on (2). The faking result is just an in-memory collection declared an initialized on (1). Finally at (6) action we call the Add method of BlogRepository passing a new Blog instance that has a name that’s already exists in the fake in-memory collection which we set up at (1). As expected the test will pass because it will throw the expected exception defined on top of the test method - InvalidOperationException. TypeMock Isolator succeeded in faking Entity Framework with ease. Conclusion We explored how to write a simple unit test using TypeMock Isolator for code which is using Entity Framework. We also explored a few of the limitations of other mocking frameworks which TypeMock is successfully able to handle. There are workarounds that you can use to overcome limitations when using MoQ or Rhino Mock, however the workarounds will require you to write more code and your tests will likely be more complex. For a comparison between different mocking frameworks take a look at this document produced by TypeMock. You might also want to check out this open source project to compare mocking frameworks. I hope you enjoyed this post Muhammad Mosa http://mosesofegypt.net/ http://twitter.com/mosessaur Screencast of unit testing Entity Framework Related Links GuestPost: Introduction to Mocking GuesPost: Typemock Isolator – Much more than an Isolation framework

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  • Rob Blackwell on interoperability and Azure

    - by Eric Nelson
    At QCon in March we had a sample Azure application implemented in both Java and Ruby to demonstrate that the Windows Azure Platform is not just about .NET. The following is an interesting interview with Rob Blackwell, the R&D director of the partner who implemented the application. UK Interoperability Team Interviews Rob Blackwell, R&D Director at Active Web Solutions. Is Microsoft taking interoperability seriously? Yes. In the past, I think Microsoft has, quite rightly come in for criticism, but architects and developers should look at this again. The Interoperability Bridges site (http://www.interoperabilitybridges.com/ ) shows a wide range of projects that allow interoperability from Java, Ruby and PHP for example. The Windows Azure platform has been architected with interoperable APIs in mind. It's straightforward to access the various storage facilities from just about any language or platform. Azure compute is capable of running more than just C# applications! Why is interoperability important to you? My company provides consultancy and bespoke development services. We're a Microsoft Gold Partner, but we live in the real world where companies have a mix of technologies provided by a variety of vendors. When developing an enterprise software solution, you rarely have a completely blank canvas. We often see integration scenarios where we need to exchange data with legacy systems. It's not unusual to see modern Silverlight applications being built on top of Java or Mainframe based back ends. Could you give us some examples of where interoperability has been important for your projects? We developed an innovative Sea Safety system for the RNLI Lifeboats here in the UK. Commercial Fishing is one of the most dangerous professions and we helped developed the MOB Guardian System which uses satellite technology and man overboard devices to raise the alarm when a fisherman gets into trouble. The solution is implemented in .NET running on Windows, but without interoperable standards, it would have been impossible to communicate with the satellite gateway technology. For more information, please see the case study: http://www.microsoft.com/casestudies/Case_Study_Detail.aspx?CaseStudyID=4000005892 More recently, we were asked to build a web site to accompany the QCon 2010 conference in London to help demonstrate and promote interoperability. We built the site using Java and Restlet and hosted it in Windows Azure Compute. The site accepts feedback from visitors and all the data is stored in Windows Azure Storage. We also ported the application to Ruby on Rails for demonstration purposes. Visitors to the stand were surprised that this was even possible. Why should Java developers be interested in Windows Azure? Windows Azure Storage consists of Blobs, Queues and Tables. The storage is scalable, durable, secure and cost-effective. Using the WindowsAzure4j library, it's easy to use, and takes just a few lines of code. If you are writing an application with large data storage requirements, or you want an offsite backup, it makes a lot of sense. Running Java applications in Azure Compute is straightforward with tools like the Tomcat Solution Accelerator (http://code.msdn.microsoft.com/winazuretomcat )and AzureRunMe (http://azurerunme.codeplex.com/ ). The Windows Azure AppFabric Service Bus can also be used to connect heterogeneous systems running on different networks and in different data centres. How can The Service Bus be considered an interoperability solution? I think that the Windows Azure AppFabric Service Bus is one of Microsoft’s best kept secrets. Think of it as “a globally scalable application plumbing kit in the sky”. If you have used Enterprise Service Buses before, you’ll be familiar with the concept. Applications can connect to the service bus to securely exchange data – these can be point to point or multicast links. With the AppFabric Service Bus, the applications can exist anywhere that has access to the Internet and the connections can traverse firewalls. This makes it easy to extend or scale your application or reach out to other networks and technologies. For example, let’s say you have a SQL Server database running on premises and you want to expose the data to a Java application running in the cloud. You could set up a point to point Service Bus connection and use JDBC. Traditionally this would have been difficult or impossible without punching holes in firewalls and compromising security. Rob Blackwell is R&D Director at Active Web Solutions, www.aws.net , a Microsoft Gold Partner specialising in leading edge software solutions. He is an occasional writer and conference speaker and blogs at www.robblackwell.org.uk Related Links: UK Azure Online Community – join today. UK Windows Azure Site Start working with Windows Azure

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  • SyncToBlog #12 Windows Azure and Cloud Links

    - by Eric Nelson
    Some more “syncing to paper” :) Steve Marx wrote a very interesting article about using Hosted Web Core in an Azure Worker Role. Hosted Web Core is a new feature in IIS 7 that enables developers to create applications that load the core IIS functionality. Wade Wegner is a new Technical Evangelist for Windows Azure platform AppFabric Example from Wade (and how I found him) Host WCF Services in IIS with Service Bus Endpoints Google and vmware “get engaged” over cloud http://googlecode.blogspot.com/2010/05/enabling-cloud-portability-with-google.html A new cloud comparison site – slick but limited coverage (it is not at Azure level, rather BPOS level) www.cloudhypermarket.com  The Rise of NoSQL Database (devx free registration required) Moe Khosravy talks about Codename "Dallas"  to my colleague David G (14min video) New videos Calculating the cost of Azure and Calculating the cost of SQL Azure Related Links: Previous SyncToBlog posts My delicious bookmarks

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  • Exporting 3DS Max animated biped character into Assimp

    - by Doug Kavendek
    I've been having some trouble with MD5 meshes exported from 3DS Max into my C++ program, using Assimp to import the model and its skeletal animation. If the models were rigged manually with bones, the export and animations work perfectly, but if they were rigged as a biped character, the animation hits a "deadly import error" and all the bones appear to get smooshed together into a big pile. This seems like it might just be a limitation of the MD5 exporter (we're currently using the one found here. Our plan is to try out a different MD5 exporter (this one), and if that still has problems, then try switching from MD5 to COLLADA. Our modeler won't be able to make time to try out these other exporters for a few days, so in the meantime I wanted to see if there were any better methods out there for getting biped rigged models from 3DS Max into our app via Assimp. Out of Assimp's supported formats, I need to figure out which will support the following: Skeletal animations Exportable from 3DS Max biped rigged models Failing that, an alternative would be a way to convert a biped character to its corresponding bones before exporting. We did find one script to do that, but it only seems meant as a starting point for modeling -- it doesn't carry over any hierarchy, skinning, or animation -- so it can't be used solely during export.

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