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ludki
 Post subject: StaleObjectStateException after removing two entities
PostPosted: Thu Jan 31, 2008 6:41 am 
Newbie

Joined: Thu Jan 31, 2008 4:52 am
Posts: 2
The szenrio is very simple : we have two entities EntityA, EntityB with a relation (EntityA.eB <-> EntityB.eA) between them.
The foreign key 'eB_id' is located at the table of EntityA.
The Lock-Strategy of both Entities is
Code:
@org.hibernate.annotations.Entity(optimisticLock = org.hibernate.annotations.OptimisticLockType.DIRTY, dynamicUpdate = true)


The initial state can be reached as follows:

Code:
@PersistenceContext
EntityManager m;

public void create() {
  EntityA a = new EntityA(1);    // PrimaryKey = 1
  EntityB b = new EntityB(1);    // PrimaryKey = 1

  a.eB = b;
  b.eA = a;

  m.persist(a);
  m.persist(b);
}


in a new Transaction (or after a flush) we have first to release the relation between the two Entities and then remove them. For getting the Exception it is important to remove the Entity which contains the foreign key at last:

Code:
private void remove() {
  EntityA a = m.find(EntityA.class, 1);
  EntityB b = m.find(EntityB.class, 1);
 
  a.eB = null;
  b.eA = null;

  m.remove(b);
  m.remove(a);
}


A flush before the removes or switching the two removes will prevent the Exception.
The generated (and obviously erroneous) SQL-Statements for the remove-method are listed below:

update EntityA set eB_id=null where key=1 and eB_id=1
delete from EntityB where key=1
delete from EntityA where key=1 and eB_id = 1 <-- eB_id was set to null two lines ago, therefore the delete causes an EntityNotFoundException

Hibernate version:
Hibernate EntityManager 3.3.1.GA
Hibernate Annotations 3.3.0.GA
Hibernate Core 3.2.5

DB-Version: Oracle 9.2.0.7.0

org.hibernate.StaleObjectStateException: Row was updated or deleted by another transaction (or unsaved-value mapping was incorrect): [test.EntityA#1]
at org.hibernate.persister.entity.AbstractEntityPersister.check(AbstractEntityPersister.java:1765)
at org.hibernate.persister.entity.AbstractEntityPersister.delete(AbstractEntityPersister.java:2523)
at org.hibernate.persister.entity.AbstractEntityPersister.delete(AbstractEntityPersister.java:2697)
at org.hibernate.action.EntityDeleteAction.execute(EntityDeleteAction.java:74)
at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:250)
at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:234)
at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:146)
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$1.beforeCompletion(AbstractEntityManagerImpl.java:516)
at com.arjuna.ats.internal.jta.resources.arjunacore.SynchronizationImple.beforeCompletion(SynchronizationImple.java:114)
at com.arjuna.ats.arjuna.coordinator.TwoPhaseCoordinator.beforeCompletion(TwoPhaseCoordinator.java:247)
at com.arjuna.ats.arjuna.coordinator.TwoPhaseCoordinator.end(TwoPhaseCoordinator.java:86)
at com.arjuna.ats.arjuna.AtomicAction.commit(AtomicAction.java:177)
at com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.commitAndDisassociate(TransactionImple.java:1389)
at com.arjuna.ats.internal.jta.transaction.arjunacore.BaseTransaction.commit(BaseTransaction.java:135)
at com.arjuna.ats.jbossatx.BaseTransactionManagerDelegate.commit(BaseTransactionManagerDelegate.java:87)
at org.jboss.aspects.tx.TxPolicy.endTransaction(TxPolicy.java:175)
at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:87)
at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:191)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:95)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.stateless.StatelessInstanceInterceptor.invoke(StatelessInstanceInterceptor.java:62)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.aspects.security.AuthenticationInterceptor.invoke(AuthenticationInterceptor.java:77)
at org.jboss.ejb3.security.Ejb3AuthenticationInterceptor.invoke(Ejb3AuthenticationInterceptor.java:110)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:46)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:106)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.stateless.StatelessContainer.dynamicInvoke(StatelessContainer.java:304)
at org.jboss.aop.Dispatcher.invoke(Dispatcher.java:106)
at org.jboss.aspects.remoting.AOPRemotingInvocationHandler.invoke(AOPRemotingInvocationHandler.java:82)
at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:769)
at org.jboss.remoting.transport.socket.ServerThread.processInvocation(ServerThread.java:573)
at org.jboss.remoting.transport.socket.ServerThread.dorun(ServerThread.java:373)
at org.jboss.remoting.transport.socket.ServerThread.run(ServerThread.java:166)


javax.persistence.EntityNotFoundException: Unable to find test.EntityA with id 1
at org.hibernate.ejb.Ejb3Configuration$Ejb3EntityNotFoundDelegate.handleEntityNotFound(Ejb3Configuration.java:109)
at org.hibernate.impl.SessionImpl.load(SessionImpl.java:797)
at org.hibernate.ejb.AbstractEntityManagerImpl.wrapStaleStateException(AbstractEntityManagerImpl.java:640)
at org.hibernate.ejb.AbstractEntityManagerImpl.throwPersistenceException(AbstractEntityManagerImpl.java:600)
at org.hibernate.ejb.AbstractEntityManagerImpl$1.beforeCompletion(AbstractEntityManagerImpl.java:525)
at com.arjuna.ats.internal.jta.resources.arjunacore.SynchronizationImple.beforeCompletion(SynchronizationImple.java:114)
at com.arjuna.ats.arjuna.coordinator.TwoPhaseCoordinator.beforeCompletion(TwoPhaseCoordinator.java:247)
at com.arjuna.ats.arjuna.coordinator.TwoPhaseCoordinator.end(TwoPhaseCoordinator.java:86)
at com.arjuna.ats.arjuna.AtomicAction.commit(AtomicAction.java:177)
at com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.commitAndDisassociate(TransactionImple.java:1389)
at com.arjuna.ats.internal.jta.transaction.arjunacore.BaseTransaction.commit(BaseTransaction.java:135)
at com.arjuna.ats.jbossatx.BaseTransactionManagerDelegate.commit(BaseTransactionManagerDelegate.java:87)
at org.jboss.aspects.tx.TxPolicy.endTransaction(TxPolicy.java:175)
at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:87)
at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:191)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:95)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.stateless.StatelessInstanceInterceptor.invoke(StatelessInstanceInterceptor.java:62)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.aspects.security.AuthenticationInterceptor.invoke(AuthenticationInterceptor.java:77)
at org.jboss.ejb3.security.Ejb3AuthenticationInterceptor.invoke(Ejb3AuthenticationInterceptor.java:110)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:46)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:106)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.stateless.StatelessContainer.dynamicInvoke(StatelessContainer.java:304)
at org.jboss.aop.Dispatcher.invoke(Dispatcher.java:106)
at org.jboss.aspects.remoting.AOPRemotingInvocationHandler.invoke(AOPRemotingInvocationHandler.java:82)
at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:769)
at org.jboss.remoting.transport.socket.ServerThread.processInvocation(ServerThread.java:573)
at org.jboss.remoting.transport.socket.ServerThread.dorun(ServerThread.java:373)
at org.jboss.remoting.transport.socket.ServerThread.run(ServerThread.java:166)
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ludki
 Post subject:
PostPosted: Thu Jan 31, 2008 11:20 am 
Newbie

Joined: Thu Jan 31, 2008 4:52 am
Posts: 2
I can't believe it!
The very remove of the entities causes the exception, because Hibernate releases the relation, if both entities will be removed.

Code:
private void remove() {
  EntityA a = m.find(EntityA.class, 1);
  EntityB b = m.find(EntityB.class, 1);

  m.remove(b);
  m.remove(a);
}

causes the same SQL-statements as above.

Are we the only ones in the world who are using optimisticLock=DIRTY?

Should I create a bug report?
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