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• CodePlex Daily Summary for Friday, August 31, 2012

  CodePlex Daily Summary for Friday, August 31, 2012Popular ReleasesStartComp: Beta Release 1.0.0: Beta Release 1 Featured Content Bing-Search has been removed Window anchor implemented The listview can now be configured to be shown in details view or tile view through the context menu The listview now allows sorting through the context menu The view, sort order and sort column are now saved for each repository The listview now shows the background image in the lower right The listview now shows a background image for the user defined repositories Added a "Tell-A-Friend" bu...SharePoint Column & View Permission: SharePoint Column and View Permission v1.2: Version 1.2 of this project. If you will find any bugs please let me know at enti@zoznam.sk or post your findings in Issue TrackerDotNetNuke® Form and List: 06.00.04: DotNetNuke Form and List 06.00.04 Don't forget to backup your installation before upgrade. Changes in 06.00.04 Fix: Sql Scripts for 6.003 missed object qualifiers within stored procedures Fix: added missing resource "cmdCancel.Text" in form.ascx.resx Changes in 06.00.03 Fix: MakeThumbnail was broken if the application pool was configured to .Net 4 Change: Data is now stored in nvarchar(max) instead of ntext Changes in 06.00.02 The scripts are now compatible with SQL Azure, tested in a ne...DotNetNuke Translator: 01.00.00 Beta: First release of the project.Audio Pitch & Shift: Audio Pitch And Shift 5.1.0.2: fixed several issues with streaming modeUrlPager: UrlPager 1.2: Fixed bug in which url parameters will lost after paging; ????????url???bug；EntLib.com????????: EntLib.com???????? v3.0: EntLib eCommerce Solution ???Microsoft .Net Framework?????????????????????。Coevery - Free CRM: Coevery 1.0.0.24: Add a sample database, and installation instructions.NicAudio: NicAudio 2.0.6: ac3,dts Solved some initialization issues with no-linear decode.ExpressProfiler: Initial release of ExpressProfiler v1.2: This is initial release of ExpressProfilerNabu Library: 2012-08-29, 14: .Net Framework 4.0, .Net Framework 4.5 Debug and Release builds.Math.NET Numerics: Math.NET Numerics v2.2.1: Major linear algebra rework since v2.1, now available on Codeplex as well (previous versions were only available via NuGet). Since v2.2.0: Student-T density more robust for very large degrees of freedom Sparse Kronecker product much more efficient (now leverages sparsity) Direct access to raw matrix storage implementations for advanced extensibility Now also separate package for signed core library with a strong name (we dropped strong names in v2.2.0) Also available as NuGet packages...Microsoft SQL Server Product Samples: Database: AdventureWorks Databases – 2012, 2008R2 and 2008: About this release This release consolidates AdventureWorks databases for SQL Server 2012, 2008R2 and 2008 versions to one page. Each zip file contains an mdf database file and ldf log file. This should make it easier to find and download AdventureWorks databases since all OLTP versions are on one page. There are no database schema changes. For each release of the product, there is a light-weight and full version of the AdventureWorks sample database. The light-weight version is denoted by ...DotNetNuke® Blog: 05.00.00: Version 5.0.0 - Final This version of the module requires DotNetNuke Core 6.2 or greater. FYI: Developers should be aware that the module uses Visual Studio 2010 only. Release Highlights: Corrected blog comment sorting problem. 20228 - Integrated with the core Journal API. 20789, 21988 - wired in fix submitted by J Sheely around blank author names. 20210 - Updated manifest to 5.0 format (from 3.0). Automated packaging and made project structure more inline with other DotNetNuke m...Christoc's DotNetNuke Module Development Template: DotNetNuke Project Templates V1.1 for VS2012: This release is specifically for Visual Studio 2012 Support, distributed through the Visual Studio Extensions gallery at http://visualstudiogallery.msdn.microsoft.com/ After you build in Release mode the installable packages (source/install) can be found in the INSTALL folder now, within your module's folder, not the packages folder anymore Check out the blog post for all of the details about this release. http://www.dotnetnuke.com/Resources/Blogs/EntryId/3471/New-Visual-Studio-2012-Projec...Home Access Plus+: v8.0: v8.0828.1800 RELEASE CHANGED TO BETA Any issues, please log them on http://www.edugeek.net/forums/home-access-plus/ This is full release, NO upgrade ZIP will be provided as most files require replacing. To upgrade from a previous version, delete everything but your AppData folder, extract all but the AppData folder and run your HAP+ install Documentation is supplied in the Web Zip The Quota Services require executing a script to register the service, this can be found in there install di...Phalanger - The PHP Language Compiler for the .NET Framework: 3.0.0.3406 (September 2012): New features: Extended ReflectionClass libxml error handling, constants DateTime::modify(), DateTime::getOffset() TreatWarningsAsErrors MSBuild option OnlyPrecompiledCode configuration option; allows to use only compiled code Fixes: ArgsAware exception fix accessing .NET properties bug fix ASP.NET session handler fix for OutOfProc mode DateTime methods (WordPress posting fix) Phalanger Tools for Visual Studio: Visual Studio 2010 & 2012 New debugger engine, PHP-like debugging ...MabiCommerce: MabiCommerce 1.0.1: What's NewSetup now creates shortcuts Fix spelling errors Minor enhancement to the Map window.ScintillaNET: ScintillaNET 2.5.2: This release has been built from the 2.5 branch. Version 2.5.2 is functionally identical to the 2.5.1 release but also includes the XML documentation comments file generated by Visual Studio. It is not 100% comprehensive but it will give you Visual Studio IntelliSense for a large part of the API. Just make sure the ScintillaNET.xml file is in the same folder as the ScintillaNET.dll reference you're using in your projects. (The XML file does not need to be distributed with your application)....BlackJumboDog: Ver5.7.1: 2012.08.25 Ver5.7.1 (1)?????·?????LING?????????????? (2)SMTP???（????）????、?????\?????????????????????New ProjectsAbcLibrary: A Library of methods and class types used for ABCAprendendo Windows 8: Não foi feito nada ainda...Auto fill template generator (word): This program was designed to help the automate generation of files using keywords.ClarkTestCodePlex2: clark test Code Razor: This tools translates Razor files to code. This allows the Razor views to be compiled and shared across projects.Contrib.Mod.ChangePassword: It is an evil module that abuses users rights and lets you change anyone's password.CurrentConsumption: CurrentConsumptionDbSettings - An API to store settings in a database: This stores settings in an OleDb/Sql database using an API similar to ApplicationSettingsBase. Settings vary by app, version, user.JCI prototipos: summaryMemberAdminService: This is a test projectMeteor Rendering Engine: The Meteor rendering engine is developed in C# with XNA 4.0, and provides various rendering outputs for 3D scenes.Mod.Colorbox: Orchard module for Mod.ColorboxMogulTestProject1: papaMogulTestTRY: papaosmm: this is a sample test projectServer Survey: Server Survey ScriptShops' Cloud: This project is a Cloud Platform for Mini Shops' Daily Management.Simple Grocery 5: This is a very simple application to help me (or you) out setting up a grocery list and use it on the food market using ALL smart phones or tablets.Tikun Korim: Community site to help people learn to read in Sefer Torah. This project is going to use ASP.NET MVC 4 and as much as open source project as we can. TreeCreeper: TreeCreeper programs (Spatial and NonSpatial) support the taxonomic analysis of species assemblagesVisual Studio Icon Patcher: Visual Studio Icon Patcher allows you to update Visual Studio 2012 with the Solution Explorer icons from Visual Studio 2010.WPT Generator: WPT Generator HTML5 , Google API 3.0, Javascript and CSS 3.0 Web Application for generating a WPT file (Ozi Explorer Format).

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• K-12 and Cloud considerations

  - by user736511

  Much like every other Public Sector organization, school districts in the US and Canada are under tremendous pressure to deliver consistent and modern services while operating with reduced budgets, IT personnel shortages, and staff attrition.  Electronic/remote learning and the need for immediate access to resources such as grades, calendars, curricula etc. are straining IT environments that were already burdened with meeting privacy requirements imposed by both regulators and parents/students.  One area viewed as a solution to at least some of the challenges is the use of "Cloud" in education.  Although the concept of "Cloud" is nothing new in education with many providers supplying educational material over the web, school districts defer previously-in-house-hosted services to established commercial vendors to accommodate document sharing, app hosting, and even e-mail.  Doing so, however, does not reduce an important risk, that of privacy.  As always, Cloud implementations are viewed in a skeptical manner because of the perceived reduction in sensitive data management and protection thereof, although with a careful approach and the right tooling, the benefits realized by Clouds can expand to security and privacy.   Oracle's comprehensive approach to data privacy and identity management ensures that the necessary tools are available to support regulations, operational efficiencies and strong security regardless of where the sensitive data is stored - on premise or a Cloud.  Common management tools, role-based access controls, access policy management and engineered systems provided by Oracle can be the foundational pieces on which school districts can build their Cloud implementations without having to worry about security itself. Their biggest challenge, and it is a positive one, is how to best take advantage of Oracle's DB Security and IDM functionality to reduce operational costs while enabling modern applications and data delivery to those who needs access to it. For more information please refer to http://www.oracle.com/us/products/middleware/identity-management/overview/index.html and http://www.oracle.com/us/products/database/security/overview/index.html.

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• How can I call a URL as a cron job in Webmin?

  - by EmmyS

  (Possibly this belongs on stackoverflow, although it's not really a programming issue since the code works when run directly. If it needs to be moved, though, no problem.) I have a PHP file (which consumers a National Weather Service web service via SOAP, if it matters) that I need to run on a scheduled basis. I'm trying to set up a cron job in Webmin. If I use an absolute path to the file in the Command field, when I run it I get some strange errors: /var/www/html/mysite.com/test/ndfdXMLclient.php: line 1: ?php: No such file or directory /var/www/html/mysite.com/test/ndfdXMLclient.php: line 2: //: is a directory /var/www/html/mysite.com/test/ndfdXMLclient.php: line 3: //DOCUMENTATION: No such file or directory /var/www/html/mysite.com/test/ndfdXMLclient.php: line 4: //: is a directory /var/www/html/mysite.com/test/ndfdXMLclient.php: line 5: syntax error near unexpected token `"running client code",' /var/www/html/mysite.com/test/ndfdXMLclient.php: line 5: `error_log("running client code", 1, "[email protected]");' The actual code in my file for those 5 lines looks like this: <?php // *************************************************************************** //DOCUMENTATION FROM WEATHER.GOV ALL STORED IN xmlClientComments.txt // *************************************************************************** error_log("running client code", 1, "[email protected]"); The code runs perfectly fine when I run it directly in my browser, so why doesn't webmin recognize it as code? (The same thing happens if I enter the actual URL in the command field - http://mysite.com/test/ndfdXMLclient.php.) I've never worked with webmin before; most of our hosts' cron control panels allow cron jobs to run PHP files like this with no issue. Is there some trick to getting webmin to read php as actual php?

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• How to manage long running background threads and report progress with DDD

  - by Mr Happy

  Title says most of it. I have found surprising little information about this. I have a long running operation of which the user wants to see the progress (as in, item x of y processed). I also need to be able to pause and stop the operation. (Stopping doesn't rollback the items already processed.) The thing is, it's not that each item takes a long time to get processed, it's that that there are usually a lot of items. And what I've read about so far is that it's somewhat of an anti-pattern to put something like a queue in the DB. I currently don't have any messaging system in place, and I've never worked with one either. Another thing I read somewhere is that progress reporting is something that belongs in the application layer, but it didn't go into the details. So having said all this, what I have in mind is the following. User request with list of items enters the application layer. Application layer gets some information from the domain needed to process the items. Application layer passes the items and the information off to some domain service (should the implementation of this service belong in the infrastructure layer?) This service spins up a worker thread with callbacks for both progress reporting and pausing/stopping it. This worker thread will process each item in it's own UoW. This means the domain information from earlier needs to be stored in some DTO. Since nothing is really persisted, the service should be singleton and thread safe Whenever a user requests a progress report or wants to pause/stop the operation, the application layer will ask the service. Would this be a correct solution? Or am I at least on the right track with this? Especially the singleton and thread safe part makes the whole thing feel icky.

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• Why is Javascript used in MongoDB and CouchDB instead of other languages such as Java, C++?

  - by startup007

  I asked this question on SO but was suggested to try here. So here it goes: My understanding of Javascript so far has been that it is a client-side language that capture events and makes a web-page dynamic. But on reading the comparison between MongoDB and CouchDB I noticed that both are using Javascript. This makes me wonder the reason behind the choice of JavaScript over other conventional languages. I guess I am trying to understand the role of JavaScript and its advantages over other languages. Update: I am not asking about the languages / drivers supported by the two databases. The comparison says: Both CouchDB and MongoDB make use of Javascript. CouchDB uses Javascript extensively including in the building of views. MongoDB also supports running arbitrary javascript functions server-side and uses javascript for map/reduce operations. My lack of understanding pertains to why is Javascript being used at all for the backend work. Why is it preferred for building views in CouchDB, or for using map/reduce operations? Why C/C++ or Java were not used? What are the advantages in using Javascript for such back-end work?

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• LibreOffice hangs everytime I click into it

  - by Freddy

  I've searched askubuntu for a solution but couldn't find anything helpful for me. I installed the latest version of ubuntu (13.10; 64-bit) yesterday (so I'm relatively new and unexperienced about it) and some programs as well. Today I wanted to try the LibreOffice package which comes with ubuntu by default. So I first started LO Impress, it showed me the default slide where it says something like "Add your title/text here" (I don't know exactly, I'm using my system in German). As soon as i clicked on this text, my entire system didn't react, I couldn't even click the stuff in the upper right corner (where the date, shutdown functions etc. are), nor the items on the launcher bar on the left. After 10 seconds or so, everything seemed to work properly again. But when I clicked into the LO Impress again, the same procedure as described happened again (cmpletely stuck for about 10 sec). Anybody got a solution for this? If you need more information, just tell me. Thanks in advance!

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• You Can&rsquo;t Upload An Empty File To SharePoint 2007 Or SharePoint 2010

  - by Brian Jackett

  The title of this post is pretty self explanatory, but I thought it worth mentioning since I had never run across this rule until just recently.  A few weeks ago I was testing out a new workflow attached to a SharePoint 2007 document library.  I uploaded various file types to ensure all were handled properly.  One of the files I happened to test with was an empty .txt file to which I got the following error.      As you can see from the error message you aren’t allowed to upload a file that is empty.  Fast forward to this week when I was doing some research for my upcoming SharePoint 2010 beta exams.  I remembered that error I got a few weeks ago and decided to try out with SharePoint 2010 as well.  No surprises I got a similar error. Conclusion     Next time you are uploading files to a SharePoint 2007 or 2010 document library, make sure the file is not empty.  Coincidentally when I tweeted about this issue a few friends replied that they had also found this error recently.  I don’t know the internal reasoning why this is prevented but I assume it has something to do with how the blob for the file is stored in the database.  I assume that this would still be the case even if you had Remote Blob Storage (RBS) configured for your farm, but don’t have access to such a farm to confirm.  If anyone reading this does have access and wants to confirm that would be appreciated, just leave a comment.         -Frog Out

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• Ray Tracing concers: Efficient Data Structure and Photon Mapping

  - by Grieverheart

  I'm trying to build a simple ray tracer for specific target scenes. An example of such scene can be seen below. I'm concerned as to what accelerating data structure would be most efficient in this case since all objects are touching but on the other hand, the scene is uniform. The objects in my ray tracer are stored as a collection of triangles, thus I also have access to individual triangles. Also, when trying to find the bounding box of the scene, how should infinite planes be handled? Should one instead use the viewing frustum to calculate the bounding box? A few other questions I have are about photon mapping. I've read the original paper by Jensen and many more material. In the compact data structure for the photon they introduce, they store photon power as 4 chars, which from my understanding is 3 chars for color and 1 for flux. But I don't understand how 1 char is enough to store a flux of the order of 1/n, where n is the number of photons (I'm also a bit confused about flux vs power). The other question about photon mapping is, if it would be more efficient in my case to store photons per object (or even per Object's triangle) instead of using a balanced kd-tree. Also, same question about bounding box of the scene but for photon mapping. How should one find a bounding box from the pov of the light when infinite planes are involved?

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• ClearTrace Supports Statement Level Events

  - by Bill Graziano

  One of the requests I get on a regular basis is to capture the performance of statement level events.  The latest beta has this feature available.  If you’re interested in this I’d like to get some feedback. I handle the SP:StmtCompleted and the SQL:StmtCompleted events.  These report CPU, reads, writes and duration. I’m not in any way saying it’s a good idea to trace these events.  Use with caution as this can make your traces much larger. If there are statement level events in the trace file they will be processed.  However the query screen displays batch level *OR* statement level events.  If it did both we’d be double counting. I don’t have very many traces with statement completed events in them.  That means I only did limited testing of how it parses these events.  It seems to work well so far though.  Your feedback is appreciated. If you ever write loops or cursors in stored procedures you’re going to get huge trace files.  Be warned. I also fixed an annoying bug where ClearTrace would fail and tell you a value had already been added.  This is a result of the collection I use being case-sensitive and SQL Server not being case-sensitive.  I thought I had properly coded around that but finally realized I hadn’t.  It should be fixed now. If you have any questions or problems the ClearTrace support forum is the best place for those.

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• SQL Server 2008 R2: These are a Few of My Favorite Things

  - by smisner

  This month's T-SQL Tuesday is hosted by Jorge Segarra (blog | twitter) who decided that we should write about our favorite new feature in SQL Server 2008 R2. The majority of my published works concentrates on Reporting Services, so the obious answer for me is about favorite new features is...Reporting Services. I can't pick just one thing in Reporting Services, so instead I thought I'd compile a list of my posts of the new features in Reporting Services 2008 R2: Map Wizard for spatial data (The World is But a Stage) Pagination features (I've Got Your Page Number) Lookup functions (Look Up, Look Down, Look All Around - Part I, Part II, Part III) Test Connection button (Testing, Testing 1-2-3) Conditional formatting based on format, i.e. RenderFormat (As You Like It) And I wrote an overview of the business intelligence features in SQL Server 2008 R2 for Microsoft Press in the free e-book, Introducing Microsoft SQL Server 2008 R2, if you're curious about what else is new in both the BI platform as well as the relational engine. Share this post: email it! | bookmark it! | digg it! | reddit! | kick it! | live it!

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• Oracle Financials In the News

  - by Di Seghposs

  Coming off of OpenWorld and all the excitement around Oracle’s “Cloud” strategy, we thought we’d share what others had to say recently about Oracle’s financial solutions in and out of the cloud: Information Management, the educated reader’s choice for the latest news, commentary and feature content serving the information technology and business community, had an interesting blog post from Bill McNee of Saugatuck Technology, entitled, “A Bull Market for Finance Cloud Apps”. In the post, he highlights Oracle as one of the ‘significant players’ in the space… Oracle: As recently announced, Oracle is now aggressively marketing its Oracle Fusion Financials Cloud Service to midsize and large enterprise customers. While we anticipate that this solution set will primarily appeal to a portion of the existing Oracle customer footprint, rather than taking share from competitors, it is embedding some strong mobile and social capabilities that should help it gain traction. Read the full article - “A Bull Market for Finance Cloud Apps” Ventana Research, a leading benchmark research and advisory services firm, made mention to Oracle Fusion Financials in a recent blog post. While we all know ‘boring is cool’, it was cool to see Robert Kugel, SVP Research, discussing Oracle’s Fusion Financials strategy. Here’s some excerpts: “For at least the next five years I believe Oracle has a good strategy, because the transition from the existing Oracle ERP offerings to Fusion Financials can be less painful than similar migrations…” “Deploying Fusion GL can facilitate a more consistent and faster way to execute finance department functions.” “Fusion Financials is the go-forward accounting and financial applications suite that will coexist…” “Whether or not it’s time to migrate, I think all users of Oracle’s E-Business Suite, Oracle Applications, PeopleSoft and JD Edwards software should consider Fusion GL as part of an ongoing program to extract more value from their core financial systems.” Read the full article - “Oracle Fusion Financials: Boring is Cool”

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• Server outputs the sourcecode of PHP page

  - by Akhilesh B Chandran

  I have a Shared Hosting package with HostGator. In it, I'm hosting around 4 websites. They are just some simple sites that doesn't likely to attract more visitors. But a few days ago, when I accessed one of my sites(via a browser), it outputted the PHP code of index.php, instead of outputting it as HTML. I think, at that time, the server was a bit busy or something. I heard that, Facebook also have got a similar condition where the home page's code was made available. So, how do I take preventive measures for this ? I always use phpBB forum's style of coding. That is, each sub pages, common functions, etc. are separated into subfolders. And in PHP, I would just include_once() or require_once() it. Also, these subfolders have a .htaccess file in which I have set the deny permission to the files inside it from outside. Also, in the main page(index), I would define a constant. And the first line of the subpages(which is situated in separate folders) is to check whether this constant is set. If not, calls die(). I am looking forward for solutions to this problem of outputting raw code when the page is accessed. Thanks in advance :)

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• Auto-hydrate your objects with ADO.NET

  - by Jake Rutherford

  Recently while writing the monotonous code for pulling data out of a DataReader to hydrate some objects in an application I suddenly wondered "is this really necessary?" You've probably asked yourself the same question, and many of you have: - Used a code generator - Used a ORM such as Entity Framework - Wrote the code anyway because you like busy work     In most of the cases I've dealt with when making a call to a stored procedure the column names match up with the properties of the object I am hydrating. Sure that isn't always the case, but most of the time it's 1 to 1 mapping.  Given that fact I whipped up the following method of hydrating my objects without having write all of the code. First I'll show the code, and then explain what it is doing.      /// <summary>     /// Abstract base class for all Shared objects.     /// </summary>     /// <typeparam name="T"></typeparam>     [Serializable, DataContract(Name = "{0}SharedBase")]     public abstract class SharedBase<T> where T : SharedBase<T>     {         private static List<PropertyInfo> cachedProperties;         /// <summary>         /// Hydrates derived class with values from record.         /// </summary>         /// <param name="dataRecord"></param>         /// <param name="instance"></param>         public static void Hydrate(IDataRecord dataRecord, T instance)         {             var instanceType = instance.GetType();                         //Caching properties to avoid repeated calls to GetProperties.             //Noticable performance gains when processing same types repeatedly.             if (cachedProperties == null)             {                 cachedProperties = instanceType.GetProperties().ToList();             }                         foreach (var property in cachedProperties)             {                 if (!dataRecord.ColumnExists(property.Name)) continue;                 var ordinal = dataRecord.GetOrdinal(property.Name);                 var isNullable = property.PropertyType.IsGenericType &&                                  property.PropertyType.GetGenericTypeDefinition() == typeof (Nullable<>);                 var isNull = dataRecord.IsDBNull(ordinal);                 var propertyType = property.PropertyType;                 if (isNullable)                 {                     if (!string.IsNullOrEmpty(propertyType.FullName))                     {                         var nullableType = Type.GetType(propertyType.FullName);                         propertyType = nullableType != null ? nullableType.GetGenericArguments()[0] : propertyType;                     }                 }                 switch (Type.GetTypeCode(propertyType))                 {                     case TypeCode.Int32:                         property.SetValue(instance,                                           (isNullable && isNull) ? (int?) null : dataRecord.GetInt32(ordinal), null);                         break;                     case TypeCode.Double:                         property.SetValue(instance,                                           (isNullable && isNull) ? (double?) null : dataRecord.GetDouble(ordinal),                                           null);                         break;                     case TypeCode.Boolean:                         property.SetValue(instance,                                           (isNullable && isNull) ? (bool?) null : dataRecord.GetBoolean(ordinal),                                           null);                         break;                     case TypeCode.String:                         property.SetValue(instance, (isNullable && isNull) ? null : isNull ? null : dataRecord.GetString(ordinal),                                           null);                         break;                     case TypeCode.Int16:                         property.SetValue(instance,                                           (isNullable && isNull) ? (int?) null : dataRecord.GetInt16(ordinal), null);                         break;                     case TypeCode.DateTime:                         property.SetValue(instance,                                           (isNullable && isNull)                                               ? (DateTime?) null                                               : dataRecord.GetDateTime(ordinal), null);                         break;                 }             }         }     }   Here is a class which utilizes the above: [Serializable] [DataContract] public class foo : SharedBase<foo> {     [DataMember]     public int? ID { get; set; }     [DataMember]     public string Name { get; set; }     [DataMember]     public string Description { get; set; }     [DataMember]     public string Subject { get; set; }     [DataMember]     public string Body { get; set; }            public foo(IDataRecord record)     {         Hydrate(record, this);                }     public foo() {} }   Explanation: - Class foo inherits from SharedBase specifying itself as the type. (NOTE SharedBase is abstract here in the event we want to provide additional methods which could be overridden by the instance class) public class foo : SharedBase<foo> - One of the foo class constructors accepts a data record which then calls the Hydrate method on SharedBase passing in the record and itself. public foo(IDataRecord record) {      Hydrate(record, this); } - Hydrate method on SharedBase will use reflection on the object passed in to determine its properties. At the same time, it will effectively cache these properties to avoid repeated expensive reflection calls public static void Hydrate(IDataRecord dataRecord, T instance) {      var instanceType = instance.GetType();      //Caching properties to avoid repeated calls to GetProperties.      //Noticable performance gains when processing same types repeatedly.      if (cachedProperties == null)      {           cachedProperties = instanceType.GetProperties().ToList();      } . . . - Hydrate method on SharedBase will iterate each property on the object and determine if a column with matching name exists in data record foreach (var property in cachedProperties) {      if (!dataRecord.ColumnExists(property.Name)) continue;      var ordinal = dataRecord.GetOrdinal(property.Name); . . . NOTE: ColumnExists is an extension method I put on IDataRecord which I’ll include at the end of this post. - Hydrate method will determine if the property is nullable and whether the value in the corresponding column of the data record has a null value var isNullable = property.PropertyType.IsGenericType && property.PropertyType.GetGenericTypeDefinition() == typeof (Nullable<>); var isNull = dataRecord.IsDBNull(ordinal); var propertyType = property.PropertyType; . . .  - If Hydrate method determines the property is nullable it will determine the underlying type and set propertyType accordingly - Hydrate method will set the value of the property based upon the propertyType   That’s it!!!   The magic here is in a few places. First, you may have noticed the following: public abstract class SharedBase<T> where T : SharedBase<T> This says that SharedBase can be created with any type and that for each type it will have it’s own instance. This is important because of the static members within SharedBase. We want this behavior because we are caching the properties for each type. If we did not handle things in this way only 1 type could be cached at a time, or, we’d need to create a collection that allows us to cache the properties for each type = not very elegant.   Second, in the constructor for foo you may have noticed this (literally): public foo(IDataRecord record) {      Hydrate(record, this); } I wanted the code for auto-hydrating to be as simple as possible. At first I wasn’t quite sure how I could call Hydrate on SharedBase within an instance of the class and pass in the instance itself. Fortunately simply passing in “this” does the trick. I wasn’t sure it would work until I tried it out, and fortunately it did.   So, to actually use this feature when utilizing ADO.NET you’d do something like the following:        public List<foo> GetFoo(int? fooId)         {             List<foo> fooList;             const string uspName = "usp_GetFoo";             using (var conn = new SqlConnection(_dbConnection))             using (var cmd = new SqlCommand(uspName, conn))             {                 cmd.CommandType = CommandType.StoredProcedure;                 cmd.Parameters.Add(new SqlParameter("@FooID", SqlDbType.Int)                                        {Direction = ParameterDirection.Input, Value = fooId});                 conn.Open();                 using (var dr = cmd.ExecuteReader())                 {                     fooList= (from row in dr.Cast<DbDataRecord>()                                             select                                                 new foo(row)                                            ).ToList();                 }             }             return fooList;         }   Nice! Instead of having line after line manually assigning values from data record to an object you simply create a new instance and pass in the data record. Note that there are certainly instances where columns returned from stored procedure do not always match up with property names. In this scenario you can still use the above method and simply do your manual assignments afterward.

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• What follows after lexical analysis?

  - by madflame991

  I'm working on a toy compiler (for some simple language like PL/0) and I have my lexer up and running. At this point I should start working on building the parse tree, but before I start I was wondering: How much information can one gather from just the string of tokens? Here's what I gathered so far: One can already do syntax highlighting having only the list of tokens. Numbers and operators get coloured accordingly and keywords also. Autoformatting (indenting) should also be possible. How? Specify for each token type how many white spaces or new line characters should follow it. Also when you print tokens modify an alignment variable (when the code printer reads "{" increment the alignment variable by 1, and decrement by 1 for "}". Whenever it starts printing on a new line the code printer will align according to this alignment variable) In languages without nested subroutines one can get a complete list of subroutines and their signature. How? Just read what follows after the "procedure" or "function" keyword until you hit the first ")" (this should work fine in a Pascal language with no nested subroutines) In languages like Pascal you can even determine local variables and their types, as they are declared in a special place (ok, you can't handle initialization as well, but you can parse sequences like: "var a, b, c: integer") Detection of recursive functions may also be possible, or even a graph representation of which subroutine calls who. If one can identify the body of a function then one can also search if there are any mentions of other function's names. Gathering statistics about the code, like number of lines, instructions, subroutines EDIT: I clarified why I think some processes are possible. As I read comments and responses I realise that the answer depends very much on the language that I'm parsing.

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• How to REALLY start thinking in terms of objects?

  - by Mr Grieves

  I work with a team of developers who all have several years of experience with languages such as C# and Java. Most of them are young enough to have been shown OOP as a standard way to develop software in university and are very comfortable with concepts such as inheritance, abstraction, encapsulation and polymorphism. Yet, many of them, and I have to include myself, still tend to create classes which are meant to be used in a very functional fashion. The resulting software is often several smaller classes which correctly represent business objects which get passed through larger classes which only supply ways to modify and use those objects (functions). Large complex difficult-to-maintain classes named Manager are usually the result of such behaviour. I can see two theoretical reasons why people might write this type of code: It's easy to start thinking of everything in terms of the database Deep down, for me, a computer handling a web request feels more like a functional operation than an object oriented operation when you think about Request Handlers, Threads, Processes, CPU Cores and CPU operations... I want source code which is easy to read and easy to modify. I have seen excellent examples of OO code which meet these objectives. How can I start writing code like this? How I can I really start thinking in an object oriented fashion? How can I share such a mentality with my colleagues?

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• Script language native extensions - avoiding name collisions and cluttering others' namespace

  - by H2CO3

  I have developed a small scripting language and I've just started writing the very first native library bindings. This is practically the first time I'm writing a native extension to a script language, so I've run into a conceptual issue. I'd like to write glue code for popular libraries so that they can be used from this language, and because of the design of the engine I've written, this is achieved using an array of C structs describing the function name visible by the virtual machine, along with a function pointer. Thus, a native binding is really just a global array variable, and now I must obviously give it a (preferably good) name. In C, it's idiomatic to put one's own functions in a "namespace" by prepending a custom prefix to function names, as in myscript_parse_source() or myscript_run_bytecode(). The custom name shall ideally describe the name of the library which it is part of. Here arises the confusion. Let's say I'm writing a binding for libcURL. In this case, it seems reasonable to call my extension library curl_myscript_binding, like this: MYSCRIPT_API const MyScriptExtFunc curl_myscript_lib[10]; But now this collides with the curl namespace. (I have even thought about calling it curlmyscript_lib but unfortunately, libcURL does not exclusively use the curl_ prefix -- the public APIs contain macros like CURLCODE_* and CURLOPT_*, so I assume this would clutter the namespace as well.) Another option would be to declare it as myscript_curl_lib, but that's good only as long as I'm the only one who writes bindings (since I know what I am doing with my namespace). As soon as other contributors start to add their own native bindings, they now clutter the myscript namespace. (I've done some research, and it seems that for example the Perl cURL binding follows this pattern. Not sure what I should think about that...) So how do you suggest I name my variables? Are there any general guidelines that should be followed?

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• sp_ssiscatalog v1.0.1.0 now available for download

  - by jamiet

  13 days ago I wrote a blog post entitled Introducing sp_ssiscatalog (v1.0.0.0) in which I first made mention of sp_ssiscatalog, an open source stored procedure intended to make it easy to query the SSIS Catalog. I have been working on some enhancements since then and hence v1.0.1.0 is now available for download from Codeplex. What’s new in this release This release includes the following enhancements: [execution_id] now gets returned in a call to EXEC [dbo].[sp_ssiscatalog] @operation_type='exec'; Filter events by specifying packages to ignore EXEC [dbo].[sp_ssiscatalog] @operation_type='exec',@exec_events_packagesexcluded='SomePackage.dtsx,AnotherPackage.dtsx'; [event_message_id] is now returned in a list of events List of executions can now be filtered via a minimum and maximum execution_id EXEC [dbo].[sp_ssiscatalog] @operation_type='execs',@execs_minimum_execution_id=198,@execs_maximum_execution_id=201 Events resultsets now have a field, [event_message_context_xml] that contains an XML document containing all [event_message_context] info (if any exists) Installation instructions Download the zip file at DB v1.0.1.0. It contains two files, SsisReportingPack.dacpac & SSISDB.dacpac Unzip to a folder of your choosing Open a command prompt and change to the directory into which you unzipped the files Execute: "%PROGRAMFILES(x86)%\Microsoft SQL Server\110\DAC\bin\sqlpackage.exe" /a:Publish /tdn:SsisReportingPack /sf:SSISReportingPack.dacpac /v:SSISDB=SSISDB /tsn:(local) (/tsn specifies the target server. Change as appropriate.) If everything works OK you’ll see something like the following: or depending on whether the target database already exists or not This will create a database called [SsisReportingPack] which contains [dbo].[sp_ssiscatalog] Feedback is welcomed! @Jamiet

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• Use CompiledQuery.Compile to improve LINQ to SQL performance

  - by Michael Freidgeim

  After reading DLinq (Linq to SQL) Performance and in particular Part 4  I had a few questions. If CompiledQuery.Compile gives so much benefits, why not to do it for all Linq To Sql queries? Is any essential disadvantages of compiling all select queries? What are conditions, when compiling makes whose performance, for how much percentage? World be good to have default on application config level or on DBML level to specify are all select queries to be compiled? And the same questions about Entity Framework CompiledQuery Class. However in comments I’ve found answer  of the author ricom 6 Jul 2007 3:08 AM Compiling the query makes it durable. There is no need for this, nor is there any desire, unless you intend to run that same query many times. SQL provides regular select statements, prepared select statements, and stored procedures for a reason.  Linq now has analogs. Also from 10 Tips to Improve your LINQ to SQL Application Performance   If you are using CompiledQuery make sure that you are using it more than once as it is more costly than normal querying for the first time. The resulting function coming as a CompiledQuery is an object, having the SQL statement and the delegate to apply it.  And your delegate has the ability to replace the variables (or parameters) in the resulting query. However I feel that many developers are not informed enough about benefits of Compile. I think that tools like FxCop and Resharper should check the queries  and suggest if compiling is recommended. Related Articles for LINQ to SQL: MSDN How to: Store and Reuse Queries (LINQ to SQL) 10 Tips to Improve your LINQ to SQL Application Performance Related Articles for Entity Framework: MSDN: CompiledQuery Class Exploring the Performance of the ADO.NET Entity Framework - Part 1 Exploring the Performance of the ADO.NET Entity Framework – Part 2 ADO.NET Entity Framework 4.0: Making it fast through Compiled Query

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• how do you remember programming related stuff?

  - by dan leadgy

  How do you remember programming related stuff? Did you get the feeling you did encounter the error you have now a few years ago and you could swear you knew the cause but now you forgot it? Did you work with the xsl's string parsing some time ago but now you can't remember exactly which are the string functions altogether from xsl and you have to start from scratch? Or perhaps you forget about some feature from Apache Commons like "filtering a collection by some predicate" that you surely used in the past. So how do you do it? I tried having a blog but when I develop apps, I never find the time to update the blog or write about my experiences. Also, using a wiki is a nice thing but then I found it difficult to keep a clean separation between them since many times I needed to change a blog post to add new information about that topic. This made me think that I actually should have put this topic in the wiki instead of the blog. Do you have any systems that help you remember about your programming experience? What's your setup?

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• Library Organization in .NET

  - by Greg Ros

  I've written a .NET bitwise operations library as part of my projects (stuff ranging from get MSB set to some more complicated bitwise transformations) and I mean to release it as free software. I'm a bit confused about a design aspect of the library, though. Many of the methods/transformations in the library come with different endianness. A simple example is a getBitAt method that regards index 0 as the least significant bit, or the most significant bit, depending on the version used. In practice, I've found that using separate functions for different endianness results in much more comprehensible and reusable code than assuming all operations are little-endian or something. I'm really stumped regarding how best to package the library. Should I have methods that have LE and BE versions take an enum parameter in their signature, e.g. Endianness.Little, Endianness.Big? Should I have different static classes with identically named methods? such as MSB.GetBit and LSB.GetBit On a much wider note, is there a standard I could use in cases like this? Some guide? Is my design issue trivial? I have a perfectionist bent, and I sometimes get stuck on tricky design issues like this... Note: I've sort of realized I'm using endianness somewhat colloquially to refer to the order/place value of digital component parts (be they bits, bytes, or words) in a larger whole, in any setting. I'm not talking about machine-level endianness or serial transmission endianness. Just about place-value semantics in general. So there isn't a context of targeting different machines/transmission techniques or something.

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• Bad archive mirror using PXE boot method

  - by user11566

  I'm trying to automatically install Ubuntu on a client PC by using the PXE BOOT method....my Objectives are below: I am following the steps given in this link installation using PXE BOOT the server will have a KICKSTART config file which contains the parameters for the OS installation and the files which are required for the OS installations. the client will have to detect this configuration along with the setup files and complete the installation without any input from the user. In my server I have installed DHCP3-server,Apache2 and TFTP to help me with the installation. I have nearly achieved my first objective, I am able to boot my client using the files stored in the server but during the installation stage it is asking me to CHOOSE A MIRROR OF UBUNTU ARCHIVE I gave the server's IP address and the path in the server where the files are located but then its giving me this error BAD ARCHIVE MIRROR So is it possible that instead of downloading all the files from the internet and storing them on my disk can I use the files which comes with the UBUNTU-CD, and how to store these files in what format (should I zip them) on the disk? secondly I am also generating the ks.cfg which I wanted to give to the client for automatic installation of the OS. So how should the configuration file be given to the installation process?

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• Prioritize compiler functionality/tasks, when designing a new language

  - by Mahdi

  Well, the question should be so hard to ask and I expect couple of down votes, however, I'm really interested to have your ideas and recommendations. :) I've already made a very simple compiler, with a few and limited functionality. Now I'm getting more on it to make it more like a real-world compiler. I definitely need to start over 'cause I've much more experience and ideas in this area rather a few years ago. So, I want to know, right now, from the very first step again, which tasks/features for the new compiler should implement first and which tasks has lower priority rather than others? For example, I'd say, first I'd go to decide about the object-oriented structure for the new language, but you might say, hey, just go for a compiler that could define a variable, when you finished that, then start thinking about OOP designs ... I prefer to hear the pros and cons for your suggestions also. Actually I like to start from Bottom to Top, where I could add simplest tasks first, and later adding more complex ones, but I'm totally open for any new ideas, and really appreciate that. Also please consider that I'm thinking about the design concepts. Actually I expect answers like: Priority from Highest to Lowest: variables, because .... functions, because .... loops, because .... ... Not: define a syntax for your new language, and start parsing your source code ...

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• Introducing the New Boot Framework in CE 7

  - by Kate Moss' Open Space

  CE 7 introduces a new boot loader framework, BLDR (platform\common\src\common\bldr\). Some people like its powerful and flexbility, others may feel its too complicate as a boot loader framework. Despite to the favor, it is already there; so let's take a look at its features. Unlike the previous BL framwork (CE7 still provides it in platform\common\src\common\boot\) is a monolithic library, the new framework has more architecture structure. It not only defines main body but also provides rich components, such as filesystem (BinFS/FAT), download transportations, display, logging and block devices: bios INT13, FAL, IDE, Flash ( and etc. Note that in the block device category, the FAL is for legacy FMD/FAL, Flash is for latest MSFlash. Some of you may have encountered MSFlash MDD/PDD compatible partition is hard to created in bootloader and now it provides a clean solution! (Since this is a big topic, I will introduce it in future post) Today, I am going to show you some basic helper components - Image Loading functions. When OS image stored in the block device, it can be a file format, says your NK.BIN in the FAT volume or a RAW format, says the image is programmed to a BINFS partition. For the first one you can use BootFileSystemReadBinFile (platform\common\src\common\bldr\fileSystem\utils\fileSystemReadBinFile.c) and use BootBlockLoadBinFsImage (platform\common\src\common\bldr\block\utils\loadBinFs.c) to load from a partition. Need a sample code? No problem, the BootLoaderLoadOs in platform\cepc\src\boot\bldr\loados.c just provide a perfect example.

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• Starting out with OpenGL when most tutorials are out of date

  - by AUTO

  I'm sure there are already a bunch of questions like this asked, but the constant updating of the OpenGL library throws them all away, and in a month or two, the answers here will be worthless again. I am ready to start programming in OpenGL using C++. I've got a working compiler (DevCpp; do NOT ask me to switch to VC++, and don't ask me why). Now I'm just looking for a solid tutorial on how to program with OpenGL. My assistant found the tutorial provided by NeHe Productions, but as I've come to find out, it's WAY OUT OF DATE! (although I did pull together a basic window to support an OpenGL canvas) Then I went online, and found the OpenGL SuperBible, which apparently uses freeglut? But what I'd like to know is whether or not SuperBible 5th edition is up to date any longer. The suggestion to freeglut I found said the latest version was 2.6.0 but now it's 2.8.0! Is the OpenGL SuperBible still a good, and fairly up-to-date place to start? Is there a better place to go to learn OpenGL? Am I allowed to simply store freeglut in the DevCpp include directory (maybe in GL), or is there some important procedure? Are there any comments or suggestions that I didn't think to ask since I'm only just beginning? @dreta cleared some things up for me, so now I have a better idea of what to ask: I think I'd like to start out with OpenGL using a wrapper library instead of directly accessing OpenGL.I just think that, for a beginner, it would be easier for me to program and get good results, while I don't yet have to understand all the grimy details (as @stephelton mentioned). The problem is, I can't find any library that doesn't have undefined references to no longer supported functions. Freeglut sounds operational, but it still uses GLU.Does anyone know what I can do?Also, I tried compiling the first SuperBible's source, but I got errors since GLAPI is not being defined as a type, the error originating in the GLU library. I'd like to use the SuperBible, but I don't know how to fix this.

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• Dell Alps Touchpad not working

  - by ppls

  I have a Dell 17R SE with Ubuntu 13.04. The touchpad is recognized as PS/2 mouse out of the box, giving just normal touchpad behaviour, but no tap to click, no scrolling, etc. Most answers related to that issue suggest trying an ALPS driver from dahetral.com: http://www.dahetral.com/public-download For installing I followed the steps on this page: https://www.linuxwind.org/html/dell-touchpad-driver-for-ubuntu-13-04.html Now my xinput looks like this: Virtual core pointer id=2 [master pointer (3)] ? ? Virtual core XTEST pointer id=4 [slave pointer (2)] ? ? PS/2 Mouse id=13 [slave pointer (2)] ? ? AlpsPS/2 ALPS GlidePoint id=14 [slave pointer (2)] ? ? Logitech Bluetooth Mouse M555b id=16 [slave pointer (2)] My touchpad isn't working at all now, just the two hardware buttons for left and right mouse buttons work. Interestingly also the tap to click functions works, but only in the address bar of nautilus, nowhere (!) else. What can I do? I would even switch back to initial state, where at least the basic touchpad functionality worked, i I knew, how to get there.

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