Home / Community & Support / Developer Productivity Tools Forums / OpenAccess ORM > OpenAccess ORM Free Edition > scope.Transaction.Commit() - More info needed from stacktrace

• Delton Phillips

  Posted on Aug 1, 2010 (permalink)

  Hi,
  
  on committing of two objects i'm getting the following exception and stack trace. Can anyone tell me if it's possible 
  to get better data to help trace down the problem? Any clue where I should be looking?
  
  [NullReferenceException: Object reference not set to an instance of an object.]
     OpenAccessRuntime.Relational.metadata.RelationalLinkCollectionField.insertUnorderedLinkTableRows(OID oid, Object[] inserted, PreparedStatement psins, Boolean batch, String sql) +227
     OpenAccessRuntime.Relational.metadata.RelationalLinkCollectionField.persistPass2BlockUnordered(PersistGraph graph, Int32 blockStart, Int32 blockEnd, CharBuf s, Connection con, Boolean batchInserts, Boolean batchUpdates) +1475
     OpenAccessRuntime.Relational.metadata.RelationalLinkCollectionField.persistPass2Block(PersistGraph graph, Int32 blockStart, Int32 blockEnd, CharBuf s, Connection con, Boolean batchInserts, Boolean batchUpdates) +123
     OpenAccessRuntime.Relational.RelationalStorageManager.persistPass2(PersistGraph graph) +649
     OpenAccessRuntime.Relational.RelationalStorageManager.doUpdates(StatesToStore toStore, StateContainer container, Boolean retainValues) +580
     OpenAccessRuntime.Relational.RelationalStorageManager.store(StatesToStore toStore, DeletePacket toDelete, Boolean returnFieldsUpdatedBySM, Int32 storeOption, Boolean evictClasses) +471
   
  [DataStoreException: System.NullReferenceException: Object reference not set to an instance of an object.
     at OpenAccessRuntime.Relational.metadata.RelationalLinkCollectionField.insertUnorderedLinkTableRows(OID oid, Object[] inserted, PreparedStatement psins, Boolean batch, String sql)
     at OpenAccessRuntime.Relational.metadata.RelationalLinkCollectionField.persistPass2BlockUnordered(PersistGraph graph, Int32 blockStart, Int32 blockEnd, CharBuf s, Connection con, Boolean batchInserts, Boolean batchUpdates)
     at OpenAccessRuntime.Relational.metadata.RelationalLinkCollectionField.persistPass2Block(PersistGraph graph, Int32 blockStart, Int32 blockEnd, CharBuf s, Connection con, Boolean batchInserts, Boolean batchUpdates)
     at OpenAccessRuntime.Relational.RelationalStorageManager.persistPass2(PersistGraph graph)
     at OpenAccessRuntime.Relational.RelationalStorageManager.doUpdates(StatesToStore toStore, StateContainer container, Boolean retainValues)
     at OpenAccessRuntime.Relational.RelationalStorageManager.store(StatesToStore toStore, DeletePacket toDelete, Boolean returnFieldsUpdatedBySM, Int32 storeOption, Boolean evictClasses) ]
     Telerik.OpenAccess.SPI.Backends.ThrowException(Exception e) +28
     Telerik.OpenAccess.RT.ExceptionWrapper.Throw() +34
     OpenAccessRuntime.DataObjects.OpenAccessPersistenceManagerImp.handleException(Exception x) +1455
     OpenAccessRuntime.DataObjects.OpenAccessPersistenceManagerImp.internalCommit(Boolean phase) +582
     OpenAccessRuntime.DataObjects.OpenAccessPersistenceManagerImp.commit() +188
     OpenAccessRuntime.DataObjects.UnsynchronizedPMProxy.commit() +42
     Telerik.OpenAccess.RT.TransactionImpl.Commit() +115
     SutureMD.Web.Common.AbstractBaseController.OnActionExecuted(ActionExecutedContext filterContext) in C:\ProjectDocs\SutureMD\Solution_May27\SutureMD.Web.Common\AbstractBaseController.cs:174
     System.Web.Mvc.Controller.System.Web.Mvc.IActionFilter.OnActionExecuted(ActionExecutedContext filterContext) +7
     System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation) +274
     System.Web.Mvc.<>c__DisplayClassf.<InvokeActionMethodWithFilters>b__c() +19
     System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodWithFilters(ControllerContext controllerContext, IList`1 filters, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +192
     System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +314
     System.Web.Mvc.Controller.ExecuteCore() +105
     System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext) +39
     System.Web.Mvc.ControllerBase.System.Web.Mvc.IController.Execute(RequestContext requestContext) +7
     System.Web.Mvc.<>c__DisplayClass8.<BeginProcessRequest>b__4() +34
     System.Web.Mvc.Async.<>c__DisplayClass1.<MakeVoidDelegate>b__0() +21
     System.Web.Mvc.Async.<>c__DisplayClass8`1.<BeginSynchronous>b__7(IAsyncResult _) +12
     System.Web.Mvc.Async.WrappedAsyncResult`1.End() +59
     System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +44
     System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +7
     System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +8677758
     System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +155

  Reply

• Thomas Thomas

  Posted on Aug 2, 2010 (permalink)

  Hello Delton,
  
  this looks like an ICollection<something> field that is participating in the exception. Can you check your model for such a field? Can you reproduce the behavior and make us see this exception too?
  Which database are you using?
  
  Sincerely yours,
  Thomas
  the Telerik team

  Do you want to have your say when we set our development plans? Do you want to know when a feature you care about is added or when a bug fixed? Explore the Telerik Public Issue Tracking system and vote to affect the priority of the items

  Reply

• Delton Phillips

  Posted on Aug 2, 2010 (permalink)

  Thanks Thomas,
  
  It had something to do with a collection. Sorry for the false alarm. :)
  
  Thanks,
  
  Delton

  Reply

• Joshua Kent

  Posted on Jan 3, 2012 (permalink)

  What was the problem with the collection? I am getting this error now too even though the same code was working a week ago. Any ideas?

  Reply

• Thomas Thomas

  Posted on Jan 5, 2012 (permalink)

  Hello Josh,
  
  did you change your code, the collection code or the OpenAccess version in the last week and can you provide us with more information so that we can iron out this issue?
  
  Kind regards,
  Thomas
  the Telerik team

  Want to use Telerik OpenAccess with SQL Azure? Download the trial version today. 

  Reply

• Joshua Kent

  Posted on Jan 5, 2012 (permalink)

  The only thing I did was delete the database and let open access recreate the schema tables from scratch. It happened after that. If I remember correctly I had this same issue in the same application earlier. The place where I get the error is related to some import functionality that takes data from an excel file and populates dataobjects and saves them using OpenAccess to the database. Earlier I got the same error when I tried to save all of the objects at once. I solved it by saving each object to the database as it was populated and not doing one mass load. But now it appears to have started happening again without any change to that code.
  
  Any thoughts would be greatly appreciated, the stack trace isn't very helpful.
  
  Josh

  Reply

• Thomas Thomas

  Posted on Jan 9, 2012 (permalink)

  Hello Kent,
  
  we really need a bit more information here. Please open a support ticket so that your .rlinq or .config file can be attached. Of special interest are also the types of the collections that are involved, and if the import code showed the error, this code could be valuable as well.
  
  All the best,
  Thomas
  the Telerik team

  Want to use Telerik OpenAccess with SQL Azure? Download the trial version today. 

  Reply

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