[JBoss-user] [EJB 3.0] - Injecting EntityManager with an interceptor

[sbalmos <do-...@jb...>]

Solve one question, end up finding another. ;)

I'm trying to get my EntityManager injected into my DAO layer, by specifying the core class of the DAO as an interceptor to my SLSB, which is acting as a SOAP service endpoint (enough buzzwords?).

I know by the deployment logs that the interceptor is being registered correctly. But no matter what, the EntityManager never gets injected, and remains null.

The persistence unit is configured in a separate persistence JAR from the EJB JAR, and everything is packed into an EAR. See below for the relevant annotations and snippets from everything:

@Stateless @WebService
@Interceptors({EJB3DAOFactory.class})
public class SOAPBackend
{
  ...
}

public class EJB3DAOFactory
{
    private static final Logger log = Logger.getLogger(EJB3DAOFactory.class);

    @PersistenceContext(unitName = "simunex")
    protected EntityManager em;

    public EJB3DAOFactory() {}

    protected EntityManager getEntityManager()
    {
        if (em == null) { log.debug("EntityManager is null!"); }
        return em;
    }
}

Like I said, the deployment logs correctly register the interceptor-based dependency on the EntityManager, and defers starting of the EJB until after Hibernate starts up. But whenever I attempt to perform a SOAP operation, which is serviced by SOAPBackend, the EntityManager remains null.

Options? I'd rather stay away from global JNDI lookup if possible. I know about the scoped deployment of the persistence unit. But I would've thought that a persistence unit defined in one JAR of an EAR would be within the scope of another JAR of the EAR.

Thanks!

--Scott


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