[news.eclipse.tools.emf] Re: [Teneo] Error on session.merge() - EMFInsta

[Martin Taal <mtaal@xxxxxxxxx>]

Hi Daniel,
Looking at the stack trace it fails when traversing a many-to-one association. Is there a ismany=false association to 
Baz in your model?

gr. Martin

Daniel Tuohy wrote:
> The reference has elements of type Bar.
>
> Martin Taal wrote:
> > Hi Daniel,
> > To be sure the containment reference of Foo.bars has elements of type 
> > Bar or type Baz?
> >
> > btw, as support is given on the main emf newsgroup, I have added it as 
> > a cc.
> >
> > gr. Martin
> >
> > Daniel Tuohy wrote:
> > > Hello,
> > >
> > > I've encountered a strange error when trying to update a teneo 
> > > hibernated object using Session.merge().  I am using Teneo 1.0.1, but 
> > > would be open to upgrading if it would help.
> > >
> > > Take the following model:
> > >
> > >  - Abstract EClass Baz
> > >  - EClass Foo
> > >   - has multi-valued containment reference 'bars' of type Bar
> > >   - extends Baz
> > >  - EClass Bar
> > >   - extends Baz
> > >
> > > When I do the following:
> > >
> > > (1) Create 'foo' on the server, and save it to the DB using 
> > > session.save(foo);
> > > (2) Send 'foo' to the client.
> > > (3) Add new Bar 'bar' to foo.bars on the client.
> > > (4) Send 'foo' back to the server (along with 'bar', via containment).
> > > (5) Update foo in the DB by calling session.merge(foo)
> > >
> > > I get the following exception:
> > >
> > > java.lang.IllegalArgumentException: The class 'Baz' is not a valid 
> > > classifier
> > >     at 
> > > emf.com.stottlerhenke.adept.impl.AdeptFactoryImpl.create(AdeptFactoryImpl.java:130) 
> > >
> > >     at org.eclipse.emf.ecore.util.EcoreUtil.create(EcoreUtil.java:3169)
> > >     at 
> > > org.eclipse.emf.teneo.hibernate.tuplizer.EMFInstantiator.instantiate(EMFInstantiator.java:85) 
> > >
> > >     at 
> > > org.hibernate.tuple.entity.AbstractEntityTuplizer.instantiate(AbstractEntityTuplizer.java:374) 
> > >
> > >     at 
> > > org.hibernate.persister.entity.AbstractEntityPersister.instantiate(AbstractEntityPersister.java:3634) 
> > >
> > >     at org.hibernate.type.EntityType.replace(EntityType.java:278)
> > >     at org.hibernate.type.AbstractType.replace(AbstractType.java:177)
> > >     at org.hibernate.type.TypeFactory.replace(TypeFactory.java:538)
> > >     at 
> > > org.hibernate.event.def.DefaultMergeEventListener.copyValues(DefaultMergeEventListener.java:429) 
> > >
> > >     at 
> > > org.hibernate.event.def.DefaultMergeEventListener.entityIsTransient(DefaultMergeEventListener.java:231) 
> > >
> > >     at 
> > > org.hibernate.event.def.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:170) 
> > >
> > >     at org.hibernate.impl.SessionImpl.fireMerge(SessionImpl.java:714)
> > >     at org.hibernate.impl.SessionImpl.merge(SessionImpl.java:696)
> > >     at 
> > > org.hibernate.engine.CascadingAction$6.cascade(CascadingAction.java:268)
> > >     at org.hibernate.engine.Cascade.cascadeToOne(Cascade.java:291)
> > >     at org.hibernate.engine.Cascade.cascadeAssociation(Cascade.java:239)
> > >     at org.hibernate.engine.Cascade.cascadeProperty(Cascade.java:192)
> > >     at 
> > > org.hibernate.engine.Cascade.cascadeCollectionElements(Cascade.java:319)
> > >     at org.hibernate.engine.Cascade.cascadeCollection(Cascade.java:265)
> > >     at org.hibernate.engine.Cascade.cascadeAssociation(Cascade.java:242)
> > >     at org.hibernate.engine.Cascade.cascadeProperty(Cascade.java:192)
> > >     at org.hibernate.engine.Cascade.cascade(Cascade.java:153)
> > >     at 
> > > org.hibernate.event.def.DefaultMergeEventListener.cascadeOnMerge(DefaultMergeEventListener.java:459) 
> > >
> > >     at 
> > > org.hibernate.event.def.DefaultMergeEventListener.entityIsDetached(DefaultMergeEventListener.java:318) 
> > >
> > >     at 
> > > org.hibernate.event.def.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:167) 
> > >
> > >     at 
> > > org.hibernate.event.def.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:81) 
> > >
> > >     at org.hibernate.impl.SessionImpl.fireMerge(SessionImpl.java:704)
> > >     at org.hibernate.impl.SessionImpl.merge(SessionImpl.java:688)
> > >     at org.hibernate.impl.SessionImpl.merge(SessionImpl.java:692)
> > >     at 
> > > com.stottlerhenke.adept.server.DataModelServer.updateFoo(DataModelServer.java:443) 
> > >
> > >
> > > The exception seems to occur when processing the new reference to 
> > > 'bar', and the fact that the reference is multi-valued and 
> > > containment appears to be important.
> > >
> > > Any idea where I might be going wrong?
> > >
> > > Thanks,
> > > Daniel


--

With Regards, Martin Taal

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