[news.eclipse.tools.emf] [CDO] Duplicate ID problem – Can a CDO model ha

[Stephen McCants <stephenmccants@xxxxxxxxx>]

Hello,

Bryan Hunt and I just moved to a version of CDO from Head about two days ago and that resolved a 
great many of our problems, including the two previously posted SQLExceptions.   (Thank you, Eike, 
for the recommendation.)

Our model is a tree structure and the leaf nodes have a non-containment reference to objects in 
another CDO model.  This is working well under the new code, except when I try to have two leaf 
nodes point to the same object in the other CDO model.  In that case, I get a “Duplicate ID” error 
message (exception included below).  I looked at the CDO source code, but didn't see any obvious way 
around this limitation.  Is there a way to allow a CDO model to support duplicate non-containment 
references to another CDO model?  If not, should there be?

Here is the exception:

java.lang.IllegalStateException: Duplicate ID: CDOResource@OID10
at org.eclipse.emf.internal.cdo.CDOViewImpl.registerObject(CDOViewImpl.java:738)
at org.eclipse.emf.internal.cdo.CDOViewImpl.registerProxyResource(CDOViewImpl.java:717)
at 
org.eclipse.emf.cdo.eresource.impl.CDOResourceFactoryImpl.createResource(CDOResourceFactoryImpl.java:70)
at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.createResource(ResourceSetImpl.java:425)
at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandCreateResource(ResourceSetImpl.java:239)
at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getResource(ResourceSetImpl.java:391)
at org.eclipse.emf.internal.cdo.CDOViewImpl.getResource(CDOViewImpl.java:340)
at org.eclipse.emf.internal.cdo.CDOViewImpl.getResource(CDOViewImpl.java:330)

Thanks in advance for your help!

Sincerely,
Stephen McCants