ejb-3.0ejb-jar.xml

Accessing <transaction-type> configration of ejb-jar.xml in EJB class

I have an EJB deployed with configurations in ejb-jar.xml and I would like to access 

<transaction-type>

configurations in my EJB class during ejbCreate() i.e. Bean or Container as I have to pass this value to my framework for internal work.

Note: I do not want repeat and define an additional env-entry for the same as its already there and I would like to use it

Solution

  • There is no method to determine this information directly. However, you can get at the information indirectly by relying on the fact that EJBContext.getUserTransaction throws an exception for CMT:

    @Resource EJBContext ejbContext;

private boolean isBeanManagedTransaction() {
  try {
    ejbContext.getUserTransaction();
    return true;
  } catch (IllegalStateException e) {
    return false;
  }
}

    Note, the getUserTransaction method cannot be called from all container callbacks (see the table of allowed operations in the EJB spec), but fortunately, getUserTransaction can be called from ejbCreate/PostConstruct, so this method should work for your purposes.