[jboss-user] [EJB 3.0] - Bean Managed Transaction: No JTA transaction found

[rituraj_tiwari]

I am resorting to BMT due to the need to launch persistence operations in worker threads. 

I am using the BMT format as described here http://www.hibernate.org/hib_docs/entitymanager/reference/en/html/transactions.html

So, I have 

  | @PersistenceUnit EntityManagerFactory m_emf;
  | @Resource UserTransaction m_ut;
  | 

And my worker threads do the equivalent of

  | public Result call() {
  |     EntityManager em = factory.createEntityManager();
  |     try {
  | 
  |     // do some work
  |     ...
  | 
  |        m_ut.commit();
  |    }
  |    catch (RuntimeException e) {
  |        if (m_ut != null) m_ut.rollback();
  |        throw e; // or display error message
  |    }
  |    finally {
  |       em.close();
  |    }
  | 

I observe that any entities I create aren't being written to the database. Looking in JBoss logs from the EntityManager creation point, I see:


  | 2008-05-24 12:39:10,911 DEBUG [org.hibernate.ejb.AbstractEntityManagerImpl] Looking for a JTA transaction to join
  | 2008-05-24 12:39:10,911 DEBUG [org.hibernate.ejb.AbstractEntityManagerImpl] No JTA transaction found
  | 

Also, When I look at what happens when I am creating and persisting entities, I see:

  | 2008-05-24 12:40:05,036 DEBUG [org.hibernate.event.def.AbstractSaveEventListener] delaying identity-insert due to no transaction in progress^M
  | 

Am I making some obvious mistake? Is launching persistent operations from separate threads not supported?

Thanks.
-Raj

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