HttpSessionListener J2EE 1.4 change

[Mukesh Mittal]

In J2ee 1.4 Servlet Spec mentioned about HttpSessionListener sessionDestroyed() functioon

-- Its a Notification that a session is about to be invalidated

while in previous versions
Notification that a session was invalidated


What's the advantage of changing this?

[Bear Bibeault]

Being notified before the session is invalidated gives you the opportunity to inpsect the session and its scoped variables prior to invalidation.

[Mukesh Mittal]

Can you give one example in which we inspect before invalidate.I am still trying to understand practical use of this.

Can we denied invalidating based on certain condition in this function.

[Bear Bibeault]

Originally posted by Mukesh Mittal:
Can you give one example in which we inspect before invalidate.I am still trying to understand practical use of this.

For example if you need the info in a session scoped variable in order to properly release a resource.

Originally posted by Mukesh Mittal:
Can we denied invalidating based on certain condition in this function.

No.

[Mukesh Mittal]

Thanks for the clarification.