| [CDO] CDO fails to generate ID for non-CDO EMF object [message #423607] |
Thu, 02 October 2008 16:11  |
Eclipse User |
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Hello,
I have a CDO-ized EMF model that has a non-containment, non-transient
reference to an object in a different non-CDO EMF model. This works fine until I
try to save the CDO model and then I get a IllegalStateException:
java.lang.IllegalStateException: Unable to provideCDOID: <non-CDO EMF object>
at org.eclipse.emf.internal.cdo.CDOViewImpl.provideCDOID(CDOVie wImpl.java:473)
at
org.eclipse.emf.cdo.internal.common.revision.CDORevisionImpl .writeValues(CDORevisionImpl.java:777)
at org.eclipse.emf.cdo.internal.common.revision.CDORevisionImpl .write(CDORevisionImpl.java:160)
at
org.eclipse.emf.internal.cdo.protocol.CommitTransactionReque st.writeRevisions(CommitTransactionRequest.java:181)
at
org.eclipse.emf.internal.cdo.protocol.CommitTransactionReque st.requesting(CommitTransactionRequest.java:98)
at org.eclipse.net4j.signal.RequestWithConfirmation.execute(Req uestWithConfirmation.java:48)
at org.eclipse.net4j.signal.Signal.runSync(Signal.java:143)
at org.eclipse.net4j.signal.SignalProtocol.startSignal(SignalPr otocol.java:236)
at org.eclipse.net4j.signal.SignalActor.send(SignalActor.java:5 0)
at org.eclipse.net4j.signal.failover.NOOPFailOverStrategy.send( NOOPFailOverStrategy.java:34)
at org.eclipse.emf.internal.cdo.CDOTransactionImpl.commit(CDOTr ansactionImpl.java:239)
at org.eclipse.emf.cdo.eresource.impl.CDOResourceImpl.save(CDOR esourceImpl.java:369)
....
CDOViewImpl.provideCDOID(Object idOrObject) calls the function CDOViewImpl.convertObjectToID(Object
potentialObject) that creates and returns a CDOAdapterImpl. Unfortunately, the provideCDOID(..)
function doesn't do anything with the adapter returned to it and so it throws the
IllegalStateException above.
Is there something I should do to allow it to generate an ID for a normal EMF object
stored outside the CDO model? Do we need to implement our own adapter somehow?
Thanks in advanced!
Sincerely,
Stephen McCants
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| Re: [CDO] CDO fails to generate ID for non-CDO EMF object [message #423626 is a reply to message #423614] |
Fri, 03 October 2008 11:06  |
| Eclipse User |
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Hello Eike,
Thank you for your quick reply. Yes, I am using 1.0 of CDO and I am talking about "external
references". For now, we are working without external references, but if we decide we really do
need them (and I expect we will), we'll move to 2.x.
Thanks again for your help!
Sincerely,
Stephen McCants
Eike Stepper wrote:
> Hi Stephen,
>
> I have the feeling that you are using a 1.0.x version of CDO, right?
> What you are describing sounds like what we call "external references" and
> support for them has only been added to the 2.0 stream of CDO after
> Ganymede:
>
> 213402: Support external references
> https://bugs.eclipse.org/bugs/show_bug.cgi?id=213402
>
> Btw. this feature was neither proposed nor developed by me.
> For respective questions I really hope that Simon's new computer
> will work wonders soon again ;-)
>
> Simon, at some convenient occasion I need to know how this feature
> impacts the existing IStores (if at all) and what I need to do in the
> DBStore!
>
> Cheers
> /Eike
>
>
> Stephen McCants schrieb:
>> Hello,
>>
>> I have a CDO-ized EMF model that has a non-containment, non-transient
>> reference to an object in a different non-CDO EMF model. This works
>> fine until I
>> try to save the CDO model and then I get a IllegalStateException:
>>
>> java.lang.IllegalStateException: Unable to provideCDOID: <non-CDO EMF
>> object>
>> at
>> org.eclipse.emf.internal.cdo.CDOViewImpl.provideCDOID(CDOVie wImpl.java:473)
>>
>> at
>> org.eclipse.emf.cdo.internal.common.revision.CDORevisionImpl .writeValues(CDORevisionImpl.java:777)
>>
>> at
>> org.eclipse.emf.cdo.internal.common.revision.CDORevisionImpl .write(CDORevisionImpl.java:160)
>>
>> at
>> org.eclipse.emf.internal.cdo.protocol.CommitTransactionReque st.writeRevisions(CommitTransactionRequest.java:181)
>>
>> at
>> org.eclipse.emf.internal.cdo.protocol.CommitTransactionReque st.requesting(CommitTransactionRequest.java:98)
>>
>> at
>> org.eclipse.net4j.signal.RequestWithConfirmation.execute(Req uestWithConfirmation.java:48)
>>
>> at org.eclipse.net4j.signal.Signal.runSync(Signal.java:143)
>> at
>> org.eclipse.net4j.signal.SignalProtocol.startSignal(SignalPr otocol.java:236)
>>
>> at org.eclipse.net4j.signal.SignalActor.send(SignalActor.java:5 0)
>> at
>> org.eclipse.net4j.signal.failover.NOOPFailOverStrategy.send( NOOPFailOverStrategy.java:34)
>>
>> at
>> org.eclipse.emf.internal.cdo.CDOTransactionImpl.commit(CDOTr ansactionImpl.java:239)
>>
>> at
>> org.eclipse.emf.cdo.eresource.impl.CDOResourceImpl.save(CDOR esourceImpl.java:369)
>>
>> ....
>>
>> CDOViewImpl.provideCDOID(Object idOrObject) calls the function
>> CDOViewImpl.convertObjectToID(Object potentialObject) that creates and
>> returns a CDOAdapterImpl. Unfortunately, the provideCDOID(..)
>> function doesn't do anything with the adapter returned to it and so it
>> throws the IllegalStateException above.
>>
>> Is there something I should do to allow it to generate an ID for a
>> normal EMF object
>> stored outside the CDO model? Do we need to implement our own adapter
>> somehow?
>>
>> Thanks in advanced!
>>
>> Sincerely,
>> Stephen McCants
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