No metadata has been registered for class error

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  1. Tom
    Tom avatar
    9 posts
    Member since:
    Feb 2013

    Posted 17 Nov 2016 Link to this post

    I have a project that uses the 2015 Q1 data access since I happen to like the graphical interface.  I just added a new entity model that accesses a different database.  The original code works fine but the new connection will give the error that I have attached below.  It is not consistent and works sometimes but fails other times.  The class is for a regular table and it was created with the rlinq wizard.  None of my web searches gave me an answer.  Anyone fought this problem already?

    Tom Mesich

     

    Telerik.OpenAccess.OpenAccessException was unhandled
      CanRetry=True
      HResult=-2146233088
      Message=No metadata has been registered for class 'SalesTracking.MS_LU_Sales_Division_Team, Sales Tracking, Version=1.0.6.1117, Culture=neutral, PublicKeyToken=null'. (This usually indicates, that either this class is not declared persistent or it is declared persistent but not enhanced. The class was loaded from file:Sales Tracking.EXE.)
      Source=Telerik.OpenAccess
      StackTrace:
           at Telerik.OpenAccess.SPI.Backends.ThrowException(Exception e)
           at OpenAccessRuntime.ExceptionWrapper.Throw()
           at OpenAccessRuntime.storagemanager.StorageManagerFactoryBuilder.createSmfForURL()
           at OpenAccessRuntime.storagemanager.StorageManagerFactoryBuilder.createStorageManagerFactory()
           at OpenAccessRuntime.DataObjects.PersistenceManagerFactoryImp.createStorageManagerFactory()
           at OpenAccessRuntime.DataObjects.PersistenceManagerFactoryBase.init()
           at OpenAccessRuntime.DataObjects.PersistenceManagerFactoryImp.init()
           at OpenAccessRuntime.DataObjects.PersistenceManagerFactoryImp..ctor(PropertySet properties, Object classloader)
           at OpenAccessRuntime.DataObjects.PersistenceManagerFactoryImp.getPersistenceManagerFactory(PropertySet props)
           at OpenAccessRuntime.DataObjects.BootstrapPMF.getPersistenceManagerFactory(PropertySet props)
           at OpenAccessRuntime.Helper.getPersistenceManagerFactory(PropertySet props)
           at OpenAccessRuntime.DatabaseAdapter.AssertPersistenceManagerFactory(String usr, String password, Boolean open)
           at OpenAccessRuntime.DatabaseAdapter.GetObjectScope(TransactionProvider provider)
           at Telerik.OpenAccess.Database.GetObjectScope(TransactionProvider provider)
           at Telerik.OpenAccess.OpenAccessContextBase.GetScope()
           at Telerik.OpenAccess.OpenAccessContext.GetAllCore[T]()
           at Telerik.OpenAccess.OpenAccessContext.GetAll[T]()
           at SalesTracking.EntitiesModelTeamSheet.get_MS_LU_Sales_Division_Teams() in EntitiesModel1.vb:line 59
           at SalesTracking.FrmTeamSheetImport.btnImport_Click(Object sender, EventArgs e) in frmTeamSheetImport.vb:line 67
           at System.Windows.Forms.Control.OnClick(EventArgs e)
           at Telerik.WinControls.RadControl.OnClick(EventArgs e)
           at Telerik.WinControls.UI.RadButtonBase.buttonElement_Click(Object sender, EventArgs e)
           at Telerik.WinControls.RadElement.OnClick(EventArgs e)
           at Telerik.WinControls.UI.RadButtonItem.OnClick(EventArgs e)
           at Telerik.WinControls.UI.RadButtonElement.OnClick(EventArgs e)
           at Telerik.WinControls.RadElement.DoClick(EventArgs e)
           at Telerik.WinControls.RadElement.RaiseBubbleEvent(RadElement sender, RoutedEventArgs args)
           at Telerik.WinControls.RadItem.RaiseBubbleEvent(RadElement sender, RoutedEventArgs args)
           at Telerik.WinControls.RadElement.RaiseRoutedEvent(RadElement sender, RoutedEventArgs args)
           at Telerik.WinControls.RadElement.RaiseBubbleEvent(RadElement sender, RoutedEventArgs args)
           at Telerik.WinControls.RadItem.RaiseBubbleEvent(RadElement sender, RoutedEventArgs args)
           at Telerik.WinControls.RadElement.RaiseRoutedEvent(RadElement sender, RoutedEventArgs args)
           at Telerik.WinControls.RadElement.DoMouseUp(MouseEventArgs e)
           at Telerik.WinControls.ComponentInputBehavior.OnMouseUp(MouseEventArgs e)
           at Telerik.WinControls.RadControl.OnMouseUp(MouseEventArgs e)
           at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
           at System.Windows.Forms.Control.WndProc(Message& m)
           at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
           at Telerik.WinControls.RadControl.WndProc(Message& m)
           at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
           at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
           at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
           at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
           at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr dwComponentID, Int32 reason, Int32 pvLoopData)
           at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
           at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
           at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.OnRun()
           at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.DoApplicationModel()
           at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.Run(String[] commandLine)
           at SalesTracking.My.MyApplication.Main(String[] Args) in 17d14f5c-a337-4978-8281-53493378c1071.vb:line 81
           at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
           at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
           at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
           at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
           at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
           at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
           at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
           at System.Threading.ThreadHelper.ThreadStart()
      InnerException: 

  2. Tom
    Tom avatar
    9 posts
    Member since:
    Feb 2013

    Posted 22 Nov 2016 Link to this post

    It was suggested to me that I place the second entity model into a class library and add a reference in the main project.  I did as suggested and I still get the error.

    Telerik.OpenAccess.OpenAccessException was unhandled
      CanRetry=True
      HResult=-2146233088
      Message=No metadata has been registered for class 'DWEntityModel.MS_LU_Sales_Division_Team, DWEntityModel, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'. (This usually indicates, that either this class is not declared persistent or it is declared persistent but not enhanced.

  3. Tom
    Tom avatar
    9 posts
    Member since:
    Feb 2013

    Posted 22 Nov 2016 Link to this post

    For those who might have the same problem, I have discovered a work around that seems to work fine.

    Instead of consuming the model like this:

    Using dbcontext = New EntitiesModelDW(connectionString) 

    I changed the code to this and it worked:

    Dim dbcontext As EntitiesModelDW = New EntitiesModelDW(connectionString)        
    Using dbcontext

    Go figure.

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