DevForce Community Forum : Refreshing Cache Oddness http://www.ideablade.com/forum/ This is an XML content feed of; DevForce Community Forum : DevForce 2010 : Refreshing Cache Oddness Wed, 29 Jul 2026 08:54:58 -700 Thu, 18 Nov 2010 10:40:03 -700 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 9.69 360 www.ideablade.com/forum/RSS_post_feed.asp?TID=2252 DevForce Community Forum http://www.ideablade.com/forum/forum_images/IdeaBlade_logo_tm.png http://www.ideablade.com/forum/ Refreshing Cache Oddness : Awesome, I'll take a look... http://www.ideablade.com/forum/forum_posts.asp?TID=2252&PID=9158#9158 Author: ken.nelson
Subject: 2252
Posted: 18-Nov-2010 at 10:40am

Awesome, I'll take a look at it.  Thanks again.]]> Thu, 18 Nov 2010 10:40:03 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2252&PID=9158#9158 Refreshing Cache Oddness : I don't have a workaround... http://www.ideablade.com/forum/forum_posts.asp?TID=2252&PID=9157#9157 Author: kimj
Subject: 2252
Posted: 18-Nov-2010 at 10:38am

I don't have a workaround for you, but there is an EAP build of 6.0.7 available which contains the fix for the problem.  I sent you the download URL last week in reply to support case #9103, but if you haven't downloaded it yet I'll need to send you the new URL, since we've had another EAP build posted since then.]]> Thu, 18 Nov 2010 10:38:48 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2252&PID=9157#9157 Refreshing Cache Oddness : Thanks Kim. Any updates or ideas... http://www.ideablade.com/forum/forum_posts.asp?TID=2252&PID=9156#9156 Author: ken.nelson
Subject: 2252
Posted: 18-Nov-2010 at 10:09am

Thanks Kim.  Any updates or ideas how to work around this yet?  ]]> Thu, 18 Nov 2010 10:09:53 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2252&PID=9156#9156 Refreshing Cache Oddness : Hi Ken, We got your email on... http://www.ideablade.com/forum/forum_posts.asp?TID=2252&PID=9105#9105 Author: kimj
Subject: 2252
Posted: 13-Nov-2010 at 7:02pm

Hi Ken,
 
We got your email on Friday.  I'll take a look at the sample on Monday and let you know what I find.
]]> Sat, 13 Nov 2010 19:02:15 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2252&PID=9105#9105 Refreshing Cache Oddness : I finally freed up enough time... http://www.ideablade.com/forum/forum_posts.asp?TID=2252&PID=9104#9104 Author: ken.nelson
Subject: 2252
Posted: 13-Nov-2010 at 10:15am

I finally freed up enough time to put together a sample application that would replicate the problem consistently.  Since my original post upgraded to version 6.0.6.1.  I sent the sample to IdeaBladeSupportTrack@ideablade.com with [#9103] as the subject line.
 
It seems to be directly related to performing queries combined with calls to RemoveEntities.  In the sample app, no modifications of any kind are happening to the data.  It's literally, query, RemoveEntities, query, exception, and it seems to be query dependent (in other words, not all queries will result in the issue).
]]> Sat, 13 Nov 2010 10:15:42 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2252&PID=9104#9104 Refreshing Cache Oddness : btitular, thanks! http://www.ideablade.com/forum/forum_posts.asp?TID=2252&PID=8897#8897 Author: kimj
Subject: 2252
Posted: 23-Oct-2010 at 12:20pm

btitular, thanks!

]]> Sat, 23 Oct 2010 12:20:20 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2252&PID=8897#8897 Refreshing Cache Oddness : I'm getting the same "already... http://www.ideablade.com/forum/forum_posts.asp?TID=2252&PID=8896#8896 Author: btitular
Subject: 2252
Posted: 23-Oct-2010 at 12:11pm

I'm getting the same "already exists in this EntityManager" error. I'm on 6.0.5.0. I can't consistently reproduce the error, but it does occur. In my case, it occurs when I'm executing a
 
_mgr.SaveChangesAsync(auditUpdateList, null, null, null)
 
We're selectively saving this entity and it consists of only one item.
 
The entity has no relationships. The table that it is linked to has an identity key. The entity gets saved to the database, but I get the exception thrown about an existing key. As you mentioned above, it looks like something's failing in the fixup logic.
 
I'm going to try to write a small test project to see if I can get the error to occur so I can send that to you.
 
]]> Sat, 23 Oct 2010 12:11:50 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2252&PID=8896#8896 Refreshing Cache Oddness : My first thought was that the... http://www.ideablade.com/forum/forum_posts.asp?TID=2252&PID=8893#8893 Author: kimj
Subject: 2252
Posted: 22-Oct-2010 at 7:22pm

My first thought was that the nature of the relationships might be confusing DevForce as it merges the results back into cache, but using simplified versions of your entities I haven't been able to prove this.  The error you see is occurring as the newly queried entities are merged into cache:  during fixup of the references for one of the lists (SourcingDecisions or UnitCycles) the merge thinks it's found a "new" entity and wants to add it to cache. 
 
This is likely a bug in the fixup logic, although since I'm unable to reproduce it right now I can't offer you any advice or a workaround.  If you can send some test data for these three entities that would be a big help.  Also, when you do the refresh, do you know if there have been a lot of changes, deletions or additions in the data?  
 
Email IdeaBladeSupportTrack with subject line "[#9103]" if you send anything to support.
]]> Fri, 22 Oct 2010 19:22:52 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2252&PID=8893#8893 Refreshing Cache Oddness : We're currently using Version... http://www.ideablade.com/forum/forum_posts.asp?TID=2252&PID=8881#8881 Author: ken.nelson
Subject: 2252
Posted: 21-Oct-2010 at 3:01pm

We're currently using Version 6.0.4

 

We're have an intermittent, unusual problem while performing a refresh of data.  In short, the client is requesting that the server perform a possibly 'long' operation.  The server does it's processing asyncronously, adding/modifying around 90 Units to our table, with the possibility of hundreds of UnitCycles and SourcingDecisions.  The server finishes, saves, and the async call is complete.  The client now has to query for all the newly added entities.

 

Our Original Code (executed when the server operation is complete):

 

IEntityQuery<Unit> query = _entityManager.Units

                .Where(i => i.COA.UniqueID == coaID)

                .Include("SourcingDecisions")

                .Include("SourcingDecisions.UnitCycle")

                .Include("UnitCycles")

                .Include("UnitCycles. Unit")

                .With(QueryStrategy.DataSourceOnly);

 

_entityManager.ExecuteQueryAsync<Unit>(query, (args) =>

{

                Refetched_Entities(args.Results);

 

}, null);

 

The problem we're having is that occassionally we get an Exception in the callback args from the query indicating that "An entity with this key: Unit: 8412cc8a-0c6d-4c83-9c59-01c9049be817 already exists in this EntityManager".  What's odd to us about the error message is we're not Adding a new Unit to the entity manager with a duplicate key, we're simply querying for data... who cares if the Unit with that key is already in cache; if it is it's the same Unit, we just want a fresh copy of it.

 

Even more oddness.  To attempt to get around the problem we added the following code before the query.

 

EntityState removeState =

               EntityState.Added | EntityState.Deleted | EntityState.Detached | EntityState.Modified | EntityState.Unchanged;

 

_entityManager.RemoveEntities(typeof(SourcingDecision), removeState);

_entityManager.RemoveEntities(typeof(UnitCycle), removeState);

_entityManager.RemoveEntities(typeof(Unit), removeState);

 

So at this point, the cache should be completely cleared of all Units and yet, we still will receive the same Exception.

 

Any help would be appreciated.

 

The Exception:

 

System.Reflection.TargetInvocationException was unhandled by user code
  Message=An exception occurred during the operation, making the result invalid.  Check InnerException for exception details.
  StackTrace:
       at System.ComponentModel.AsyncCompletedEventArgs.RaiseExceptionIfNecessary()
       at IdeaBlade.EntityModel.EntityQueriedEventArgs`1.get_Results()
       at IdeaBlade.EntityModel.EntityQueryOperation`1.get_Results()
       at AST.Web.SourcingCOA.SL.COAUnitDataManager.<RefetchData>b__0(EntityQueryOperation`1 args)
       at IdeaBlade.EntityModel.EntityQueryOperation`1.IdeaBlade.EntityModel.IHasAsyncEventArgs.OnCompleted()
       at IdeaBlade.EntityModel.AsyncProcessor`1.<>c__DisplayClass2.<.ctor>b__0(TArgs args)
       at IdeaBlade.EntityModel.AsyncProcessor`1.Signal()
       at IdeaBlade.EntityModel.AsyncProcessor`1.<Execute>b__5(Object x)
  InnerException: System.InvalidOperationException
       Message=An entity with this key: Unit: 8412cc8a-0c6d-4c83-9c59-01c9049be817 already exists in this EntityManager
       StackTrace:
            at IdeaBlade.EntityModel.EntityGroup.AddToKeyMap(EntityWrapper wrapper)
            at IdeaBlade.EntityModel.EntityGroup.AddEntityCore(EntityWrapper wrapper)
            at IdeaBlade.EntityModel.EntityGroup.AddNewEntity(EntityWrapper wrapper)
            at IdeaBlade.EntityModel.EntityManager.AddEntityWrapper(EntityWrapper wrapper)
            at IdeaBlade.EntityModel.EntityReferenceBase.AttachIfPossible(EntityWrapper newValueWrapper)
            at IdeaBlade.EntityModel.RelatedEntityList`1.AddOrInsert(Int32 index, T item, Boolean updateInverse)
            at IdeaBlade.EntityModel.RelatedEntityList`1.Add(T item, Boolean updateInverse)
            at IdeaBlade.EntityModel.ListEntityReference`1.AddEntity(Object entity, Boolean updateInverse)
            at IdeaBlade.EntityModel.ListEntityReference`1.FixupReferences()
            at IdeaBlade.EntityModel.EntityWrapper.<FixupReferences>b__13(EntityReferenceBase eref)
            at IdeaBlade.Core.EnumerableFns.ForEach[T](IEnumerable`1 items, Action`1 action)
            at IdeaBlade.EntityModel.EntityWrapper.FixupReferences()
            at IdeaBlade.EntityModel.EntityWrapper.TrackChanged(EntityChangedEventArgs e)
            at IdeaBlade.EntityModel.EntityGroup.OnEntityChanged(EntityChangedEventArgs e)
            at IdeaBlade.EntityModel.EntityGroup.AddQueriedEntity(EntityWrapper wrapper)
            at IdeaBlade.EntityModel.EntityGroup.LoadEntity(EntityWrapper sourceWrapper, MergeStrategy mergeStrategy, Boolean& rowUpdated)
            at IdeaBlade.EntityModel.EntityMerger.MergeEntityCore(EntityWrapper sourceWrapper, EntityGroup targetEntityGroup)
            at IdeaBlade.EntityModel.EntityMerger.MergeEntity(EntityWrapper sourceWrapper, EntityGroup targetEntityGroup, NavigationContext context)
            at IdeaBlade.EntityModel.EntityMerger.MergeEntity(EntityWrapper sourceWrapper, NavigationContext context)
            at IdeaBlade.EntityModel.EntityMerger.FindOrMergeTarget(EntityWrapper sourceWrapper, NavigationEntityProperty navProp, NavigationContext context)
            at IdeaBlade.EntityModel.EntityMerger.MergeScalarNavProp(EntityReferenceManager sourceRefManager, NavigationEntityProperty navProp, EntityReferenceBase targetSref, NavigationContext context)
            at IdeaBlade.EntityModel.EntityMerger.MergeNavProperties(InProcessInfo inProcessInfo, NavigationContext context)
            at IdeaBlade.EntityModel.EntityMerger.MergeEntityNavProperties(InProcessInfo inProcessInfo, NavigationContext context)
            at IdeaBlade.EntityModel.EntityMerger.MergeEntity(EntityWrapper sourceWrapper, EntityGroup targetEntityGroup, NavigationContext context)
            at IdeaBlade.EntityModel.EntityMerger.<>c__DisplayClass1.<MergeEntities>b__0(EntityWrapper sourceWrapper)
            at System.Linq.Enumerable.<>c__DisplayClass12`3.<CombineSelectors>b__11(TSource x)
            at System.Linq.Enumerable.WhereSelectEnumerableIterator`2.MoveNext()
            at IdeaBlade.Core.EnumerableFns.ForEach[T](IEnumerable`1 items, Action`1 action)
            at IdeaBlade.EntityModel.DataBlockFns.MakeResultList(Type type, IEnumerable items, Boolean isOrdered)
            at IdeaBlade.EntityModel.EntityQueryResult.UpdateDataSet(EntitiesDataBlock block, NavigationContext context)
            at IdeaBlade.EntityModel.EntitiesDataBlock.Resolve(EntityQueryResult helper)
            at IdeaBlade.EntityModel.EntityQueryResult..ctor(DataQueryResult dataQueryResult, EntityManager entityManager, MergeStrategy mergeStrategy, Guid queryId, QueryInfo queryInfo)
            at IdeaBlade.EntityModel.EntityQueryResultCollection..ctor(DataQueryResultCollection dqResults, EntityManager entityManager, MergeStrategy mergeStrategy)
            at IdeaBlade.EntityModel.EntityManager.MergeAndReturnDataSourceOnly(IEntityFinder finder, DataQueryResultCollection dqResults)
            at IdeaBlade.EntityModel.EntityManager.ProcessFetchedData(DataQueryResultCollection dqResults, IEntityFinder finder)
            at IdeaBlade.EntityModel.EntityManager.AsyncFetchCompleted(AsyncEventArgs args)
            at IdeaBlade.EntityModel.EntityManager.<ExecuteQueryAsyncCore>b__57[T](EntityQueryOperation`1 op)
            at IdeaBlade.EntityModel.AsyncProcessor`1.<Execute>b__5(Object x)
       InnerException:

 

]]> Thu, 21 Oct 2010 15:01:56 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2252&PID=8881#8881