public class MyObject implements HttpSessionBindingListener {
private boolean interesting = false;
...
public boolean isInteresting() {
return interesting;
}
public void setInteresting(boolean yesno) {
interesting = yesno;
}
public void valueUnbound(HttpSessionBindingEvent event) {
if( isInteresting() ) {
// do something here.
}
}
....
}
When you create the interesting one, set it to be interesting. All the
other objects will just no-op on unbound.
"Alexander Wallace" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> I gave that a try, the problem with it is that my session has many
instances
> of that same object, but it is only one instance the one I'm interested
on.
> That's why i wanted to pull it out of the session since I can retrieve the
> particular one by name...
>
> Any ideas?
>
> On Monday 17 March 2003 10:44, mike jackson wrote:
> > Value bound and unbound is the way to do this. I have an object that
> > creates and destroys "temp" tables in my database this way. It's kinda
> > clunky, but it works.
> >
> > When the object is unbound (either it is removed from the session or the
> > session is invalidated) you'll get an event. As long as you don't
> > remove the object yourself you ought to be mostly ok. With tomcat 3.x I
> > have the issue that sometimes I have to kill -9 tomcat (not often) which
> > doesn't trigger the value unbound event, but it's mostly ok.
> >
> > --mikej
> > -=-----
> > mike jackson
> > [EMAIL PROTECTED]
> >
> > -----Original Message-----
> > From: Alexander Wallace [mailto:[EMAIL PROTECTED]
> > Sent: Monday, March 17, 2003 8:23 AM
> > To: Tomcat Users List
> > Subject: Get object from session before it expires.
> >
> > I've been searching and just want to make sure I was told correctly.
> >
> > I was told in an IRC that there is no way to get an object from a
> > session
> > before it expires.
> >
> > I know you can listen for valueUnbound, but that tells me when all
> > instances
> > of a class are being unbound.
> >
> > I know you can listen to sessionDestroyed and get the session from the
> > HttpSessionEvent, but by then the session has already been invalidated
> > and I
> > can't get a hold on a particular object.
> >
> > What I need is to know before a session is invalidated, so that I can
> > pull a
> > particular instance of a class from the session and update a database
> > with
> > it.
> >
> > I was told that is not possible... Is this right? Any suggestions?
> >
> > Thanks in advance!
> >
> >
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> >
> >
> >
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