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