DevForce Community Forum : Intended behaviour? http://www.ideablade.com/forum/ This is an XML content feed of; DevForce Community Forum : DevForce 2010 : Intended behaviour? Wed, 29 Jul 2026 07:10:28 -700 Tue, 19 Oct 2010 18:13:27 -700 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 9.69 360 www.ideablade.com/forum/RSS_post_feed.asp?TID=2158 DevForce Community Forum http://www.ideablade.com/forum/forum_images/IdeaBlade_logo_tm.png http://www.ideablade.com/forum/ Intended behaviour? : Version 6.0.6 is now available.... http://www.ideablade.com/forum/forum_posts.asp?TID=2158&PID=8839#8839 Author: kimj
Subject: 2158
Posted: 19-Oct-2010 at 6:13pm

Version 6.0.6 is now available.

]]> Tue, 19 Oct 2010 18:13:27 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2158&PID=8839#8839 Intended behaviour? : We did fix the problem in 6.0.6,... http://www.ideablade.com/forum/forum_posts.asp?TID=2158&PID=8836#8836 Author: kimj
Subject: 2158
Posted: 19-Oct-2010 at 5:37pm

We did fix the problem in 6.0.6, so you won't have to wait long.  We'll post when 6.0.6 is up on the web site, but it should be real soon now.]]> Tue, 19 Oct 2010 17:37:39 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2158&PID=8836#8836 Intended behaviour? : Two very recent postings here... http://www.ideablade.com/forum/forum_posts.asp?TID=2158&PID=8829#8829 Author: jsobell
Subject: 2158
Posted: 19-Oct-2010 at 3:46pm

Two very recent postings here and here also discuss the issue, but it's not going to be fixed until 6.0.7, so we'll have to wait.
]]> Tue, 19 Oct 2010 15:46:36 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2158&PID=8829#8829 Intended behaviour? : Was this issue ever resolved?... http://www.ideablade.com/forum/forum_posts.asp?TID=2158&PID=8818#8818 Author: cjohnson84
Subject: 2158
Posted: 19-Oct-2010 at 8:32am

Was this issue ever resolved?  I am now running into the "Null or pending entities cannot be modified" error.  In my particular case I have bound an Employee entity to my UI.  The Employee entity may or may not have a related Demographic entity.  If the Employee entity does not have a related Demographic entity when I examine the contents of my EntityManager I see a "detached" Demographic entity related to the Employee entity.  If I try to set a field in my UI (GenderID) that is in the Demographic entity I get the error.
 
Here is my stack trace:
 
   at IdeaBlade.EntityModel.EntityGroup.OnEntityPropertyChanging(EntityPropertyChangingEventArgs e)
   at IdeaBlade.EntityModel.EntityWrapper.SetValueWithChangeNotification(DataEntityProperty property, Object newValue)
   at IdeaBlade.EntityModel.EntityWrapper.IdeaBlade.EntityModel.IStructuralObject.SetValueWithChangeNotification(DataEntityProperty property, Object newValue)
   at IdeaBlade.EntityModel.DataEntityProperty`2.SetValueWithVerification(TInstance instance, TValue newValue)
   at IdeaBlade.EntityModel.DataEntityProperty`2.<.ctor>b__4(DataEntityPropertySetInterceptorArgs`2 args)
   at IdeaBlade.Core.PropertyInterceptor`3.HandleAction(Action`1 action, TArgs args)
   at IdeaBlade.Core.PropertyInterceptor`3.<>c__DisplayClassb.<BuildTargetedCombinedAction>b__5(TArgs args)
   at IdeaBlade.Core.PropertyInterceptor`3.ExecuteActions(TArgs args)
   at IdeaBlade.Core.PropertyInterceptor`3.SetValue(TInstance instance, Object context, TValue value)
   at IdeaBlade.Core.PropertyInterceptor`3.SetValue(TInstance instance, TValue value)
   at IdeaBlade.EntityModel.DataEntityProperty`2.SetValue(TInstance instance, TValue value)
   at OrianaHouse.CMIS.Data.DataModel.Demographic.set_GenderID(Byte value)
]]> Tue, 19 Oct 2010 08:32:44 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2158&PID=8818#8818 Intended behaviour? : Yes, we&#039;ve seen the same... http://www.ideablade.com/forum/forum_posts.asp?TID=2158&PID=8538#8538 Author: ting
Subject: 2158
Posted: 16-Sep-2010 at 6:40pm

Yes, we've seen the same artifiacts in binding where it is calling the 'set' even though it is only displaying and not modifying the value.  I know you've been chatting with Ward - you might want to bounce this one off him.]]> Thu, 16 Sep 2010 18:40:31 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2158&PID=8538#8538 Intended behaviour? : Sorry, should have posted the... http://www.ideablade.com/forum/forum_posts.asp?TID=2158&PID=8524#8524 Author: jsobell
Subject: 2158
Posted: 15-Sep-2010 at 11:57pm

Sorry, should have posted the following exception text too.

IdeaBlade.Core.IdeaBladeException occurred
  Message=Null or pending entities cannot be modified
  StackTrace:
       at IdeaBlade.EntityModel.EntityGroup.OnEntityPropertyChanging(EntityPropertyChangingEventArgs e)
       at IdeaBlade.EntityModel.EntityWrapper.SetValueWithChangeNotification(DataEntityProperty property, Object newValue)
       at IdeaBlade.EntityModel.EntityWrapper.SetValue(DataEntityProperty targetProperty, EntityWrapper sourceEntity, DataEntityProperty sourceProperty)
       at IdeaBlade.EntityModel.ScalarEntityReference`1.UpdateOtherProperties(EntityRelationLink relationLink, EntityWrapper fromEntity, EntityWrapper toEntity)
       at IdeaBlade.EntityModel.ScalarEntityReference`1.UpdateFkForNewToEntity(EntityWrapper toEntity)
       at IdeaBlade.EntityModel.ScalarEntityReference`1.SetEntity(T newValue, Boolean updateFkValues, Boolean updateInverseValues)
       at IdeaBlade.EntityModel.ScalarEntityReference`1.CreateOrFindPendingEntity(EntityReferenceStrategy strategy)
       at IdeaBlade.EntityModel.ScalarEntityReference`1.QueryForEntity(EntityReferenceStrategy strategy)
       at IdeaBlade.EntityModel.ScalarEntityReference`1.GetEntity(EntityReferenceStrategy strategy)
       at IdeaBlade.EntityModel.ScalarEntityReference`1.GetValue()
       at IdeaBlade.EntityModel.NavigationScalarEntityProperty`2.<.ctor>b__0(NavigationEntityPropertyGetInterceptorArgs`2 args)
       at IdeaBlade.Core.PropertyInterceptor`3.HandleAction(Action`1 action, TArgs args)
       at IdeaBlade.Core.PropertyInterceptor`3.<BuildTargetedCombinedAction>b__3(TArgs args)
       at IdeaBlade.Core.PropertyInterceptor`3.ExecuteActions(TArgs args)
       at IdeaBlade.Core.PropertyInterceptor`3.GetValue(TInstance instance, Object context)
       at IdeaBlade.Core.PropertyInterceptor`3.GetValue(TInstance instance)
       at IdeaBlade.EntityModel.NavigationScalarEntityProperty`2.GetValue(TInstance instance)
       at RiskStructureEditor.Web.Node.get_NodeTarget()
  InnerException:

]]> Wed, 15 Sep 2010 23:57:51 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2158&PID=8524#8524 Intended behaviour? : Interestingly, calling the Get... http://www.ideablade.com/forum/forum_posts.asp?TID=2158&PID=8514#8514 Author: jsobell
Subject: 2158
Posted: 14-Sep-2010 at 9:38pm

Interestingly, calling the Get on this property in code does not generate this exception, but any binding to it does, and yet according to VS2010 the Set method is never called.
What circumstances might cause this exception to be thrown via the Get method? Why is databinding so damned difficult to debug in VS?
]]> Tue, 14 Sep 2010 21:38:14 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2158&PID=8514#8514 Intended behaviour? : Just struck an intersting error... http://www.ideablade.com/forum/forum_posts.asp?TID=2158&PID=8513#8513 Author: jsobell
Subject: 2158
Posted: 14-Sep-2010 at 9:24pm

Just struck an intersting error message in a moderately simple binding situation:

I have a selected node from a tree that has an optional 'Target' entity as a property.
Targets may or may not exist for a node, and the display switches between showing the target data and hiding it through a behaviour.
Given that the visibility is programmatic, the bindings are obviously always there (but the text boxes hide and display), so the XAML for the enclosed textbox is:

Text="{Binding SelectedNode.NodeTarget.TARGET, Mode=TwoWay}"

When the code runs, we get the error
"Null or pending entities cannot be modified"
from the Get of the
   public NodeTarget NodeTarget {
      get { return PropertyMetadata.NodeTarget.GetValue(this); } <==== Here
      set { PropertyMetadata.NodeTarget.SetValue(this, value); }
    }

In this case 'this' is set to a valid entity, and this.NodeTarget is reported as '{NodeTarget:0} - Detached entity'

Setting Mode=OneWay has the same problem, so is this really intended behaviour? Why is a call to fetch a property from a non-initialised entity raising this particular exception?
I understand that it doesn't make sense to read a property from what is effectively a NULL reference, but this is one of the issues with XAML binding.

Any suggestions?

Cheers,
 Jason
]]> Tue, 14 Sep 2010 21:24:34 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2158&PID=8513#8513