2 Replies Latest reply on Jan 24, 2008 9:24 AM by lpmon

Injected EntityManager in SLSB after an exception

lpmon Jan 23, 2008 11:58 AM

Environment: JBoss AS 4.0.5, Hibernate 3.2.5, Hibernate EM 3.3.1

I am using CMP. I have an injected entitymanager (em) in an SLSB I use to persist new rows into the DB.

After an exception is thrown (in this case a dup key) - subsequent calls to the SLSB method that does the persist seems to be using the same em that was rendered unusable by the exception.

I say "unusable" because per Hibernate documentation an em must be closed after an exception. BUT: I am using CMP with @PersistenceContext for injection so the container should handle that. Right? I would think the container would inject a new em for the next call to the SLSB method???? Is there something I must do to force the new em to be injected?

On the first insert with a dup key I get an EntityExistsException (this is expected). But, on the next call to the SLSB I get the stack trace below which to me indicates the SLSB still has the old em and is trying to use it:

2008-01-23 10:51:15,009 ERROR [STDERR] | javax.ejb.EJBTransactionRolledbackException: javax.persistence.TransactionRequiredException: EntityManager must be access within a transaction
2008-01-23 10:51:15,009 ERROR [STDERR] javax.ejb.EJBTransactionRolledbackException: javax.persistence.TransactionRequiredException: EntityManager must be access within a transaction
2008-01-23 10:51:15,009 ERROR [STDERR] at org.jboss.ejb3.tx.Ejb3TxPolicy.handleInCallerTx(Ejb3TxPolicy.java:93)
2008-01-23 10:51:15,009 ERROR [STDERR] at org.jboss.aspects.tx.TxPolicy.invokeInCallerTx(TxPolicy.java:130)
2008-01-23 10:51:15,009 ERROR [STDERR] at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:195)
2008-01-23 10:51:15,009 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
2008-01-23 10:51:15,009 ERROR [STDERR] at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:76)
2008-01-23 10:51:15,009 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
2008-01-23 10:51:15,009 ERROR [STDERR] at org.jboss.ejb3.stateless.StatelessInstanceInterceptor.invoke(StatelessInstanceInterceptor.java:62)
2008-01-23 10:51:15,009 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
2008-01-23 10:51:15,009 ERROR [STDERR] at org.jboss.aspects.security.AuthenticationInterceptor.invoke(AuthenticationInterceptor.java:77)
2008-01-23 10:51:15,009 ERROR [STDERR] at org.jboss.ejb3.security.Ejb3AuthenticationInterceptor.invoke(Ejb3AuthenticationInterceptor.java:102)
2008-01-23 10:51:15,009 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
2008-01-23 10:51:15,009 ERROR [STDERR] at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:47)
2008-01-23 10:51:15,009 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
2008-01-23 10:51:15,009 ERROR [STDERR] at org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:106)
2008-01-23 10:51:15,009 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
2008-01-23 10:51:15,009 ERROR [STDERR] at org.jboss.ejb3.stateless.StatelessContainer.localInvoke(StatelessContainer.java:211)
2008-01-23 10:51:15,009 ERROR [STDERR] at org.jboss.ejb3.stateless.StatelessLocalProxy.invoke(StatelessLocalProxy.java:79)
2008-01-23 10:51:15,009 ERROR [STDERR] at $Proxy148.saveEvent(Unknown Source)
2008-01-23 10:51:15,009 ERROR [STDERR] at com.shockwatch.swevents.SWEvent.process(SWEvent.java:358)
2008-01-23 10:51:15,009 ERROR [STDERR] at com.shockwatch.bufs.EventBuf.processEvents(EventBuf.java:503)
2008-01-23 10:51:15,009 ERROR [STDERR] at com.shockwatch.bufs.EventBuf.process(EventBuf.java:485)
2008-01-23 10:51:15,009 ERROR [STDERR] at com.shockwatch.server.RFMsg.rcvUnitData(RFMsg.java:939)
2008-01-23 10:51:15,009 ERROR [STDERR] at com.shockwatch.server.RFMsg.RcvSendData(RFMsg.java:685)
2008-01-23 10:51:15,009 ERROR [STDERR] at com.shockwatch.server.RFMsg.ProcessInbound(RFMsg.java:393)
2008-01-23 10:51:15,009 ERROR [STDERR] at com.shockwatch.server.RFPakIn.ProcessMessages(RFPakIn.java:160)
2008-01-23 10:51:15,009 ERROR [STDERR] at com.shockwatch.server.RFPakIn.process(RFPakIn.java:61)
2008-01-23 10:51:15,009 ERROR [STDERR] at com.shockwatch.dbfacade.SWUnit.run(SWUnit.java:297)
2008-01-23 10:51:15,009 ERROR [STDERR] at com.shockwatch.ejb3.session.PacketProcessorBean.processPacket(PacketProcessorBean.java:38)
2008-01-23 10:51:15,009 ERROR [STDERR] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
2008-01-23 10:51:15,009 ERROR [STDERR] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
2008-01-23 10:51:15,009 ERROR [STDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
2008-01-23 10:51:15,009 ERROR [STDERR] at java.lang.reflect.Method.invoke(Unknown Source)
2008-01-23 10:51:15,009 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:112)
2008-01-23 10:51:15,009 ERROR [STDERR] at org.jboss.ejb3.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:166)
2008-01-23 10:51:15,009 ERROR [STDERR] at org.jboss.seam.intercept.EJBInvocationContext.proceed(EJBInvocationContext.java:37)
2008-01-23 10:51:15,009 ERROR [STDERR] at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:98)
2008-01-23 10:51:15,009 ERROR [STDERR] at org.jboss.seam.intercept.SessionBeanInterceptor.aroundInvoke(SessionBeanInterceptor.java:53)
2008-01-23 10:51:15,009 ERROR [STDERR] at sun.reflect.GeneratedMethodAccessor223.invoke(Unknown Source)
2008-01-23 10:51:15,009 ERROR [STDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
2008-01-23 10:51:15,009 ERROR [STDERR] at java.lang.reflect.Method.invoke(Unknown Source)
2008-01-23 10:51:15,009 ERROR [STDERR] at org.jboss.ejb3.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:118)
2008-01-23 10:51:15,009 ERROR [STDERR] at org.jboss.ejb3.interceptor.EJB3InterceptorsInterceptor.invoke(EJB3InterceptorsInterceptor.java:63)
2008-01-23 10:51:15,009 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
2008-01-23 10:51:15,009 ERROR [STDERR] at org.jboss.ejb3.entity.TransactionScopedEntityManagerInterceptor.invoke(TransactionScopedEntityManagerInterceptor.java:54)
2008-01-23 10:51:15,009 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
2008-01-23 10:51:15,009 ERROR [STDERR] at org.jboss.ejb3.AllowedOperationsInterceptor.invoke(AllowedOperationsInterceptor.java:46)
2008-01-23 10:51:15,009 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
2008-01-23 10:51:15,009 ERROR [STDERR] at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:79)
2008-01-23 10:51:15,009 ERROR [STDERR] at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:191)
2008-01-23 10:51:15,040 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
2008-01-23 10:51:15,040 ERROR [STDERR] at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:76)
2008-01-23 10:51:15,040 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
2008-01-23 10:51:15,040 ERROR [STDERR] at org.jboss.ejb3.stateless.StatelessInstanceInterceptor.invoke(StatelessInstanceInterceptor.java:62)
2008-01-23 10:51:15,040 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
2008-01-23 10:51:15,040 ERROR [STDERR] at org.jboss.aspects.security.AuthenticationInterceptor.invoke(AuthenticationInterceptor.java:77)
2008-01-23 10:51:15,040 ERROR [STDERR] at org.jboss.ejb3.security.Ejb3AuthenticationInterceptor.invoke(Ejb3AuthenticationInterceptor.java:102)
2008-01-23 10:51:15,040 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
2008-01-23 10:51:15,040 ERROR [STDERR] at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:47)
2008-01-23 10:51:15,040 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
2008-01-23 10:51:15,040 ERROR [STDERR] at org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:106)
2008-01-23 10:51:15,040 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
2008-01-23 10:51:15,040 ERROR [STDERR] at org.jboss.ejb3.stateless.StatelessContainer.localInvoke(StatelessContainer.java:211)
2008-01-23 10:51:15,040 ERROR [STDERR] at org.jboss.ejb3.stateless.StatelessLocalProxy.invoke(StatelessLocalProxy.java:79)
2008-01-23 10:51:15,040 ERROR [STDERR] at $Proxy145.processPacket(Unknown Source)
2008-01-23 10:51:15,040 ERROR [STDERR] at com.shockwatch.server.PakInRunner.run(PakInRunner.java:31)
2008-01-23 10:51:15,040 ERROR [STDERR] at com.shockwatch.util.ThreadPool$PooledThread.run(ThreadPool.java:55)
2008-01-23 10:51:15,056 ERROR [STDERR] Caused by: javax.persistence.TransactionRequiredException: EntityManager must be access within a transaction
2008-01-23 10:51:15,056 ERROR [STDERR] at org.jboss.ejb3.entity.ManagedEntityManagerFactory.verifyInTx(ManagedEntityManagerFactory.java:150)
2008-01-23 10:51:15,056 ERROR [STDERR] at org.jboss.ejb3.entity.TransactionScopedEntityManager.persist(TransactionScopedEntityManager.java:174)

1. Re: Injected EntityManager in SLSB after an exception

jaikiran Jan 24, 2008 5:35 AM (in response to lpmon)

Please post the code where you doing the insert and also the later part where this throws the exception that you posted. Looks like after the insert fails with an exception, the transaction is marked for rollback and i guess even after the exception occurs, the code is trying to operate using the entitymanager.
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2. Re: Injected EntityManager in SLSB after an exception

lpmon Jan 24, 2008 9:24 AM (in response to lpmon)

I have a simple test case I created to experiment with behaving as expected. When I determine why the offending code is behaving this way I will post it with an explanation.
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