rollback in SFSB

[sowmya thiru]

SFSB
you can begin a transaction during ejbCreate() and commit/rollback in another business method
What will be effect when ejbCreate() is part of Txn start, and rollback happens in anotehr method?

[Chris Mathews]

Actually, the EJB Specification explicitly makes a point of not specifying the transactional context for the ejbCreate() lifecycle event of Session Beans (and a few other lifecycle methods). Some Application Servers may allow you to begin a transaction in ejbCreate(), others may not. Therefore, attempting to start a transaction in ejbCreate() of a Session Bean should be avoided if you are looking to create a portable solution.
For more information on this, see 17.6.5 of the EJB 2.0 Specification.

[Chris Mathews]

BTW, I am moving this to the EJB Forum...

[Pradeep bhatt]

Some Application Servers may allow you to begin a transaction in ejbCreate(), others may not.

I feel it is a volation of ejb spec.

[Chris Mathews]

Originally posted by Pradeep Bhat:
I feel it is a volation of ejb spec.

Not at all. It states explicitly in the specification that the behavior is up to the EJB Container.

EJB 2.0 Specification, Section 17.6.5:
The EJB specification does not prescribe how the Container should manage the execution of a method with an unspecified transaction context�the transaction semantics are left to the Container implementation.

[Dragan Milic]

Originally posted by Chris Mathews:
Actually, the EJB Specification explicitly makes a point of not specifying the transactional context for the ejbCreate() lifecycle event of Session Beans (and a few other lifecycle methods). Some Application Servers may allow you to begin a transaction in ejbCreate(), others may not. Therefore, attempting to start a transaction in ejbCreate() of a Session Bean should be avoided if you are looking to create a portable solution.
For more information on this, see 17.6.5 of the EJB 2.0 Specification.

Hallo Chris,
Starting a transaction in the ejbCreate() of the SLSB makes no sense since the instances are pooled. Starting a transaction in the ejbCreate of the SFSB makes sense and is allowed by the EJB 2.0 spec. See the Chapter 7.6.1 (page 80, table 2 - BMT Demarcation).
Dragan