Re: Ejectute a method on an object instance when session is deactivated.

[Jon Wingfield]

I think in servlet spec 2.4 there is an event generated just before the 
session is invalidated. Until then:

I implemented a HttpSessionAttributeListener. When a session is about to 
be invalidated all its attributes are removed. So, if you have an 
attribute which lasts for the lifetime of the session you can do your 
session clean-up when it gets removed :)

Also, if you have session persistance turned on sessionDestroyed(...) 
won't necessarily be called when you shut down tomcat. It may be called 
when you start up tomcat again later and the persisted session 
immediately times out ;)

Jon

Alexander Wallace wrote:
I tryed that but when I do getAttribute("myObj") from the session, I get an 
error saying that the session has already been invalidated.

Any clues?

On Friday 14 March 2003 13:17, Shapira, Yoav wrote:

Howdy,
In a SessionListener's sessionDestroyed() method, the HttpSessionEvent
argument has a getSession() method you get use to get the Session
itself, and then do getAttribute("...") on the session to get the
object.
Yoav Shapira
Millennium ChemInformatics




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