Harvinder,
When you said "we dont have any instance variable", do you mean instance
variable is not allowed in stateless session bean, or we shouldn't use
it? Although EJB Spec on 6.8 did mention that "....instance variable of
the instance can contain the state acress client-invoked method calls".
Even though we don't want to maintain any state for stateless session
bean, but what if we want to make sure the method/operation we use upon
the instance variable's stateless session bean is transactional? In that
case isn't it a good time to implement SessionSynchronization,
regardless whether it is stateful or stateless.
Thanks, I am just confused here.
Harvinder Singh wrote:
>
> As we know that in the case of session beans instance variables are not
> transactional.
> We implement SessionSynchronization interface in session bean to make
> instance variable
> in sync with database/initial val i.e. during the course of transaction you
> modified yr
> beans instance variables and then transaction is rolled back, so by using
> callback methods
> of SessionSynchronization interface (like beforeCompletion() or
> afterCompletion()) that can
> be achieved.
> In the case of stateless session beans we dont have any instance variable
> becos we dont want to
> maintain any state, so no question of such synchronization.
>
> I hope i answered you.
> Regards,
> Harvinder
>
> -----Original Message-----
> From: sOUMYA dUTTA [mailto:[EMAIL PROTECTED]]
> Sent: Tuesday, March 06, 2001 4:18 PM
> To: [EMAIL PROTECTED]
> Subject: restriction on Stateless Session Beans
>
> Could someone tell me why should the Stateless Session Bean not be allowed
> to implement the SessionSynchronization interface?
>
> Thanks,
> - Dutta.
>
> ===========================================================================
> To unsubscribe, send email to [EMAIL PROTECTED] and include in the body
> of the message "signoff EJB-INTEREST". For general help, send email to
> [EMAIL PROTECTED] and include in the body of the message "help".
>
> ===========================================================================
> To unsubscribe, send email to [EMAIL PROTECTED] and include in the body
> of the message "signoff EJB-INTEREST". For general help, send email to
> [EMAIL PROTECTED] and include in the body of the message "help".
--
Liang Low
===========================================================================
To unsubscribe, send email to [EMAIL PROTECTED] and include in the body
of the message "signoff EJB-INTEREST". For general help, send email to
[EMAIL PROTECTED] and include in the body of the message "help".
