Hi,
I?m currently working on a stateful session bean (jboss 4.2.0.CR2) and I need some help.
In the annotated pre destroy method I get an exception if one method of the Hibernate session is invoked.
Caused by: java.lang.NullPointerException
at org.jboss.ejb3.entity.ManagedEntityManagerFactory.getNonTxEntityManager(ManagedEntityManagerFactory.java:59)
at org.jboss.ejb3.entity.ManagedEntityManagerFactory.getTransactionScopedEntityManager(ManagedEntityManagerFactory.java:164)
at org.jboss.ejb3.entity.hibernate.TransactionScopedSessionInvocationHandler.getSession(TransactionScopedSessionInvocationHandler.java:71)
at org.jboss.ejb3.entity.hibernate.TransactionScopedSessionInvocationHandler.getHibernateSession(TransactionScopedSessionInvocationHandler.java:62)
at org.jboss.ejb3.entity.hibernate.TransactionScopedSessionInvocationHandler.invoke(TransactionScopedSessionInvocationHandler.java:96)
at $Proxy112.load(Unknown Source)
The code fragment:
public class CombinationWriterBean implements CombinationWriter {
@PersistenceContext( unitName = "MyPu" )
private Session session;
[ ? ]
@PreDestroy
public void destroy() {
getLogger().info("Invoking destroy method...");
if ( ! isCommitted() ) {
this.session.load( this.revision, this.revision.getId() );
this.session.delete( this.revision );
}
}
}Is this a bug or this design is not compliant with EJB specs. Is there an existing workaround to this issue?
Any help would be appreciated.
Regards,
Alexandre
