Question

Does anyone know if JBoss @Service EJB’s support transactions? I’d like to work with an EntityManager but am getting “EntityManager must be used within a transaction” errors. Explicitly specifying container-managed transactions and REQUIRED transactions on the EJB doesn’t make a difference.

Thanks.

Update

Here is the code I am using to get an EntityManager:

   @PersistenceContext(unitName = "MyPersistenceContextName")
   private EntityManager m_entityManager;

And here is the code that failed:

  m_entityManager.persist( objectToSave);
  m_entityManager.flush();

It failed on the first line.

Answer 1

By applying annotation @Service, it will install the bean in the MBean server with specific name, which runs on a different classloader & your application on another one. Therefore, this may be the reason why MBean not support transaction & not be able to access the context.

Instead of interacting with database through MBean, you can delegate it to other EJB bean, which can be accessed through JNDI lookup.