Mario Wojcik

Hi

I'm preparing to SCBCD exam and I have problems with understanding various types of Entity Managers.

I know that Application Managed EM can be JTA or ResourceLocal, but what about Transaction Management Demarcation(bean-managed transaction demarcation,or container-managed transaction demarcation) for this type of EM?

For example:
It is possible to be a Resource Local EM with Bean Managed Transactions Demarcation? If yes, how can I mark transaction for rollback(I could use: - UserTransaction.rollback(), UserTransaction.setRollbackOnly(), EntityTransaction.rollback(),EntityTransaction.setRollbackOnly())?


Thanks for help

Mario