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
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