Has Lightspeed 2.2 nightly build broken Dynamic Data?

Hi,

I have recently returned to working on a solution taht uses Lightspeed 2.2. The solution is using a relatively old nightly build (2.2.1149.11463) which at the time addressed an issue we were having with DynamicData. However, another issue was recently discovered. It appears that in this build, the FirstOrDefault() Linq method was not populating child collections, even if they were marked as EagerLoad.

I downloaded the latest nightly build and this fixed the problem. However, DynamicData now appears to be broken.

When the application first fires up, I get the following exception raised:

Type : System.NullReferenceException, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 Message : Object reference not set to an instance of an object.
Source : Mindscape.LightSpeed.Web.DynamicData
Help link : 
Data : System.Collections.ListDictionaryInternal
TargetSite : Void InitialiseNullability()
Stack Trace :    at Mindscape.LightSpeed.Web.DynamicData.LightSpeedColumnProvider.InitialiseNullability()
   at Mindscape.LightSpeed.Web.DynamicData.LightSpeedColumnProvider.EnsureInitialised()
   at Mindscape.LightSpeed.Web.DynamicData.LightSpeedColumnProvider.get_Association()
   at System.Web.DynamicData.MetaColumn.Create(MetaTable table, ColumnProvider columnProvider)
   at System.Web.DynamicData.MetaTable..ctor(MetaModel metaModel, TableProvider tableProvider, Boolean scaffoldAllTables, String nameOverride)
   at System.Web.DynamicData.MetaModel.RegisterContext(DataModelProvider dataModelProvider, ContextConfiguration configuration)
   at <namespaceremoved>.Website.Global.RegisterRoutes(RouteCollection routes) in <filepathremoved>
   at <namespaceremoved>.Website.Global.Start() in <filepathremoved>
   at Microsoft.Practices.CompositeWeb.WebClientApplication.Application_Start(Object sender, EventArgs e)

And when I try to fire up a Dynamic data maintenance screen, the following exception is raised:

Type : System.Web.HttpException, System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a Message : The file '/DataMaintenance/OrganisationTypes/ListDetails.aspx' does not exist.
Source : System.Web
Help link : 
ErrorCode : -2147467259
Data : System.Collections.ListDictionaryInternal
TargetSite : Void CheckVirtualFileExists(System.Web.VirtualPath)
Stack Trace :    at System.Web.UI.Util.CheckVirtualFileExists(VirtualPath virtualPath)
   at System.Web.Compilation.BuildManager.GetVPathBuildResultInternal(VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile)
   at System.Web.Compilation.BuildManager.GetVPathBuildResultWithNoAssert(HttpContext context, VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile)
   at System.Web.Compilation.BuildManager.GetVirtualPathObjectFactory(VirtualPath virtualPath, HttpContext context, Boolean allowCrossApp, Boolean noAssert)
   at System.Web.Compilation.BuildManager.CreateInstanceFromVirtualPath(VirtualPath virtualPath, Type requiredBaseType, HttpContext context, Boolean allowCrossApp, Boolean noAssert)
   at System.Web.UI.PageHandlerFactory.GetHandlerHelper(HttpContext context, String requestType, VirtualPath virtualPath, String physicalPath)
   at System.Web.UI.PageHandlerFactory.System.Web.IHttpHandlerFactory2.GetHandler(HttpContext context, String requestType, VirtualPath virtualPath, String physicalPath)
   at System.Web.HttpApplication.MapHttpHandler(HttpContext context, String requestType, VirtualPath path, String pathTranslated, Boolean useAppConfig)
   at System.Web.HttpApplication.MapHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

Given that I haven't been working with Lightspeed 2.2. for a while, has something changed that I am now missing?

I have resolved my initial problem by using the SingleOrDefault() Linq method, which is quite valid for my current situation, but am likely to have occasions where I will need the FirstOrDefault option.

Thanks, Mark

Thanks for reporting this.  We have made some changes in this area since the build you had before and it looks like those changes are not working with your model.  Is it possible for you to post your model (just the .cs file) to help us reproduce this problem?  Thanks!

Hello Mark,

Thanks for providing the model.  It seems we had a problem handling to-one association properties when they were declared in the partial class and not backed by an EntityHolder.  I've committed a fix for this and it will be included in nightly builds dated 8 Dec 2009 and above.