aspose file tools*
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ejbCreate -permitted and prohibited operations -

marcus don
Ranch Hand

Joined: Jan 26, 2005
Posts: 38
Hi all,
... about permitted and prohibited operations in an ejbCreate
method for a stateful session bean and a stateless session bean.




1) Why I can't mark the current transaction to roll back ?
2) Why I can't Determine whether the transaction has already been marked for rollback?
3) Why I can get a reference to the transaction? (no for stateless)

Thanks
Roger Chung-Wee
Ranch Hand

Joined: Sep 29, 2002
Posts: 1683
Why I can't mark the current transaction to roll back ?

ejbCreate never runs in the context of a transaction, so there is nothing to mark for rollback.

Why I can't Determine whether the transaction has already been marked for rollback?

Same reason as above.

Why I can get a reference to the transaction? (no for stateless)

A BMT stateful session bean demarcates its transaction boundaries, and is allowed to do this from ejbCreate. For CMT beans, demarcation is started from the business methods.


SCJP 1.4, SCWCD 1.3, SCBCD 1.3
marcus don
Ranch Hand

Joined: Jan 26, 2005
Posts: 38
Hi Roger, may you please explain me the meaning of

A BMT stateful session bean demarcates its transaction boundaries
even with an example Thanks!
Roger Chung-Wee
Ranch Hand

Joined: Sep 29, 2002
Posts: 1683
The following is not tested code (I've written it here in as hurry), but it does give an indication of how you can do this.
marcus don
Ranch Hand

Joined: Jan 26, 2005
Posts: 38
Thank you !
 
I agree. Here's the link: http://aspose.com/file-tools
 
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