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Home » Modeling » EMF » [CDO] CDO fails to generate ID for non-CDO EMF object
[CDO] CDO fails to generate ID for non-CDO EMF object [message #423607] Thu, 02 October 2008 20:11 Go to next message
Stephen McCants is currently offline Stephen McCantsFriend
Messages: 92
Registered: July 2009
Member
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
Re: [CDO] CDO fails to generate ID for non-CDO EMF object [message #423614 is a reply to message #423607] Fri, 03 October 2008 07:10 Go to previous messageGo to next message
Eike Stepper is currently offline Eike StepperFriend
Messages: 6465
Registered: July 2009
Senior Member
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


Re: [CDO] CDO fails to generate ID for non-CDO EMF object [message #423616 is a reply to message #423614] Fri, 03 October 2008 08:43 Go to previous messageGo to next message
Victor Roldan Betancort is currently offline Victor Roldan BetancortFriend
Messages: 524
Registered: July 2009
Senior Member
Eike,

> 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!

Isn't external references implemented for DBStore? I thought it was.
Re: [CDO] CDO fails to generate ID for non-CDO EMF object [message #423617 is a reply to message #423616] Fri, 03 October 2008 09:05 Go to previous messageGo to next message
Eike Stepper is currently offline Eike StepperFriend
Messages: 6465
Registered: July 2009
Senior Member
Víctor Roldán Betancort schrieb:
> Eike,
>
>> 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!
>
> Isn't external references implemented for DBStore? I thought it was.
As I said, I was not too deeply involved in this whole feature.
Particularly I didn't change any code in DBStore (IIRC).
Either Simon has done it or it was not necessary at all (what I don't
believe).

Cheers
/Eike


Re: [CDO] CDO fails to generate ID for non-CDO EMF object [message #423626 is a reply to message #423614] Fri, 03 October 2008 15:06 Go to previous messageGo to next message
Stephen McCants is currently offline Stephen McCantsFriend
Messages: 92
Registered: July 2009
Member
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
Re: [CDO] CDO fails to generate ID for non-CDO EMF object [message #423627 is a reply to message #423614] Fri, 03 October 2008 15:07 Go to previous message
Simon Mc Duff is currently offline Simon Mc DuffFriend
Messages: 596
Registered: July 2009
Senior Member
Hi Eike,

It was my mistake, I should have create new bugzilla for that.

CDOIDExternal needs to be kept in the persistence space.
I've created 2 bugzilla for them for Hibernate and for DBStore.
https://bugs.eclipse.org/bugs/show_bug.cgi?id=249611
https://bugs.eclipse.org/bugs/show_bug.cgi?id=249610

The testcases are failing for them!!!

Simon

"Eike Stepper" <stepper@esc-net.de> a
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