[jboss-user] [JBoss Seam] - Warning: do not use Seam managed pesistent context for BMT

[koenhandekyn]

warning !!!

just lost a lot of time with the following. When you want to do bean managed transactions, do NOT use a seam managed persistent context (injected with @In) but use a EJB3 container managed persistent context (injected with @PersistenceContext).

BMT how to summary

mark bean as BMT

  @TransactionManagement(TransactionManagementType.BEAN)

inject em

  @PersistenceContext
  // NOT !!! @In
  private EntityManager entityManager;

inject user transaction

  @Resource
  private UserTransaction userTransaction;

start / commit / rollback transaction on userTransaction object

      userTransaction.begin(); // etc

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