12:12 p.m.
[ http://jira.jboss.com/jira/browse/JBAS-4618?page=comments#action_12373196 ]
Elias Ross commented on JBAS-4618:
----------------------------------
This is with JBoss 4.2.0.
And by "this error", I mean this exception
2007-07-25 11:14:41,313 ERROR [AbstractFlushingEventListener] Could not synchronize
database state with session
org.hibernate.type.SerializationException: could not deserialize
at org.hibernate.util.SerializationHelper.deserialize(SerializationHelper.java:214)
at org.hibernate.util.SerializationHelper.deserialize(SerializationHelper.java:240)
at org.hibernate.type.SerializableType.fromBytes(SerializableType.java:82)
at org.hibernate.type.SerializableType.deepCopyNotNull(SerializableType.java:74)
at org.hibernate.type.MutableType.deepCopy(MutableType.java:25)
at org.hibernate.type.SerializableToBlobType.deepCopy(SerializableToBlobType.java:102)
at org.hibernate.type.TypeFactory.deepCopy(TypeFactory.java:353)
at org.hibernate.action.EntityUpdateAction.execute(EntityUpdateAction.java:114)
at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:248)
at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:232)
at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:140)
at
org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:298)
at
org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27)
at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1000)
at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:338)
at
org.hibernate.ejb.AbstractEntityManagerImpl$1.beforeCompletion(AbstractEntityManagerImpl.java:515)
at
com.arjuna.ats.internal.jta.resources.arjunacore.SynchronizationImple.beforeCompletion(SynchronizationImple.java:114)
at
com.arjuna.ats.arjuna.coordinator.TwoPhaseCoordinator.beforeCompletion(TwoPhaseCoordinator.java:249)
at com.arjuna.ats.arjuna.coordinator.TwoPhaseCoordinator.end(TwoPhaseCoordinator.java:88)
at com.arjuna.ats.arjuna.AtomicAction.commit(AtomicAction.java:177)
at
com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.commitAndDisassociate(TransactionImple.java:1256)
at
com.arjuna.ats.internal.jta.transaction.arjunacore.BaseTransaction.commit(BaseTransaction.java:135)
at
com.arjuna.ats.jbossatx.BaseTransactionManagerDelegate.commit(BaseTransactionManagerDelegate.java:87)
at
org.jboss.resource.adapter.jms.inflow.JmsServerSession$XATransactionDemarcationStrategy.end(JmsServerSession.java:494)
at org.jboss.resource.adapter.jms.inflow.JmsServerSession.run(JmsServerSession.java:248)
at org.jboss.resource.work.WorkWrapper.execute(WorkWrapper.java:204)
at org.jboss.util.threadpool.BasicTaskWrapper.run(BasicTaskWrapper.java:275)
at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:743)
at java.lang.Thread.run(Thread.java:595)
Caused by: java.lang.ClassNotFoundException: No ClassLoaders found for:
com.example.msg.ScopedClass
at org.jboss.mx.loading.LoadMgr3.beginLoadTask(LoadMgr3.java:306)
at
org.jboss.mx.loading.RepositoryClassLoader.loadClassImpl(RepositoryClassLoader.java:514)
at org.jboss.mx.loading.RepositoryClassLoader.loadClass(RepositoryClassLoader.java:408)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:242)
at java.io.ObjectInputStream.resolveClass(ObjectInputStream.java:574)
at
org.hibernate.util.SerializationHelper$CustomObjectInputStream.resolveClass(SerializationHelper.java:268)
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1538)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1460)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1693)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1299)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:339)
at org.hibernate.util.SerializationHelper.deserialize(SerializationHelper.java:210)
... 28 more
Thread context classloader not set during transaction commit
------------------------------------------------------------
Key: JBAS-4618
URL: http://jira.jboss.com/jira/browse/JBAS-4618
Project: JBoss Application Server
Issue Type: Bug
Security Level: Public(Everyone can see)
Reporter: Elias Ross
I modified a serializable object, part of an EJB3 Entity, during an MDB.onMessage() call.
Hibernate attempts to update this serializable object during the transaction commit, but
fails because it cannot load the class from the classloader. For example, if one modifies
an entity such as:
@Entity
public class Foo {
Serializable bar;
...
}
in an MDB
public class MDB implements MessageListener {
@PersistenceContext
EntityManager em;
public void onMessage() {
Foo f = em.load(...);
f.setBar(new ScopedClass());
}
}
you get this error.
The thread context classloader is assigned when processing the message. Is it cleared
after message processing or after transaction completion? From my limited understanding of
the code, it seems like the former. There appears to be an invoker that sets and clears
during processing, but the clear apparently happens before transaction commit.
Ordinarily, transaction commit does not require the context classloader of the .ear file,
but in this case it does.
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