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[CDO] Editor based-on TransactionEditingdomain [message #427392]

Mon, 16 February 2009 15:57

Stephane fournier

Messages: 340
Registered: July 2009

Senior Member

After experiencing some difficulties with CDO and a
TransactionalEditingDomain(TED) (see post
http://www.eclipse.org/newsportal/article.php?id=39439&g roup=eclipse.tools.emf#39439),
now I try to use a EMF generated editor slightly modified to use TED and a
CDO resource.

The data are correctly loaded but when selecting an object in the
treeviewer, let's say a company or a customer I get the following
exception.
A part from that, that seems to work properly, the editor gets dirty when
modifying data, the save operation runs well but generates the same
exception.

Do you have an idea to figure out that latest issue ?

Stephane.

Caused by: org.eclipse.net4j.signal.RemoteException:
org.eclipse.net4j.db.DBException: ClassID for CDOID NULL not found
at
org.eclipse.emf.cdo.server.internal.db.ObjectTypeCache.getOb jectType(ObjectTypeCache.java:88)
at
org.eclipse.emf.cdo.server.internal.db.HorizontalMappingStra tegy.readObjectType(HorizontalMappingStrategy.java:69)
at
org.eclipse.emf.cdo.server.internal.db.DBStoreAccessor.readO bjectType(DBStoreAccessor.java:251)
at
org.eclipse.emf.cdo.server.internal.db.DBStoreAccessor.getOb jectType(DBStoreAccessor.java:335)
at
org.eclipse.emf.cdo.server.internal.db.DBStoreAccessor.readR evision(DBStoreAccessor.java:271)
at
org.eclipse.emf.cdo.internal.server.RevisionManager.loadRevi sion(RevisionManager.java:202)
at
org.eclipse.emf.cdo.internal.common.revision.CDORevisionReso lverImpl.getRevision(CDORevisionResolverImpl.java:94)
at
org.eclipse.emf.cdo.internal.common.revision.CDORevisionReso lverImpl.getRevision(CDORevisionResolverImpl.java:79)
at
org.eclipse.emf.cdo.internal.server.protocol.LoadRevisionInd ication.getRevision(LoadRevisionIndication.java:177)
at
org.eclipse.emf.cdo.internal.server.protocol.LoadRevisionInd ication.responding(LoadRevisionIndication.java:147)
at
org.eclipse.emf.cdo.internal.server.protocol.CDOServerIndica tion.responding(CDOServerIndication.java:151)
at
org.eclipse.net4j.signal.IndicationWithResponse.doExtendedOu tput(IndicationWithResponse.java:96)
at org.eclipse.net4j.signal.Signal.doOutput(Signal.java:285)
at
org.eclipse.net4j.signal.IndicationWithResponse.execute(Indi cationWithResponse.java:65)
at
org.eclipse.emf.cdo.internal.server.protocol.CDOReadIndicati on.execute(CDOReadIndication.java:36)
at org.eclipse.net4j.signal.Signal.runSync(Signal.java:237)
at org.eclipse.net4j.signal.Signal.run(Signal.java:145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Threa dPoolExecutor.java:650)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoo lExecutor.java:675)
at java.lang.Thread.run(Thread.java:595)

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Re: [CDO] Editor based-on TransactionEditingdomain [message #427394 is a reply to message #427392]

Mon, 16 February 2009 16:20

Victor Roldan Betancort

Messages: 524
Registered: July 2009

Senior Member

Stéphane,

I was getting the same exception yesterday. I'm not sure if it would
help, but let's try at least! Since it was also related with TED...

In the method:

org.eclipse.emf.cdo.eresource.impl.CDOResourceImpl.basicSetR esourceSet(ResourceSet,
NotificationChain)

Try to force Resource load *before* notifications take place. You can do
this by simply adding:

try
{
load(null);
}
catch (IOException ex)
{
OM.LOG.error(ex);
}

right before:

if (eNotificationRequired())
{
.......

Again, this is experimental stuff, haven't even executed our test suite
to see if it breaks anything.

Let me know if it helps.

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Re: [CDO] Editor based-on TransactionEditingdomain [message #427396 is a reply to message #427394]

Mon, 16 February 2009 16:37

Stephane fournier

Messages: 340
Registered: July 2009

Senior Member

Victor,

I have just tested your patch.
The exception always happens less often but the fixes I did to get EMF
Transaction notifications ok (see other post), won't run anymore.

I am trying to debug the server to clarify what happens.

Stéphane.

Víctor Roldán Betancort wrote:

> Stéphane,

> I was getting the same exception yesterday. I'm not sure if it would
> help, but let's try at least! Since it was also related with TED...

> In the method:

>
org.eclipse.emf.cdo.eresource.impl.CDOResourceImpl.basicSetR esourceSet(ResourceSet,
> NotificationChain)

> Try to force Resource load *before* notifications take place. You can do
> this by simply adding:

> try
> {
> load(null);
> }
> catch (IOException ex)
> {
> OM.LOG.error(ex);
> }

> right before:

> if (eNotificationRequired())
> {
> .......

> Again, this is experimental stuff, haven't even executed our test suite
> to see if it breaks anything.

> Let me know if it helps.

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