That makes a lot of sense - thank you.
- dave
----- Original Message -----
From: "Hans Bergsten" <[EMAIL PROTECTED]>
To: "Tomcat Developers List" <[EMAIL PROTECTED]>
Sent: Sunday, March 30, 2003 5:54 PM
Subject: Re: HttpSessionBindingListener.valueUnbound() not called
> David Thielen wrote:
> > One note to the below:
> >
> > It does call it on a timeout under 4.1.24 (it did not do that in
4.1.18).
> > But it does not call it if Tomcat is reloaded or exits - which according
to
> > the spec it is supposed to do.
>
> Two things:
> 1) When you stop Tomcat, it saves all session data to disk; it does not
> terminate the sessions at this time, so don't expect a valueUnbound()
> call immediately at stop. When Tomcat is restarted, it loads all
> session data again and eventually calls valueUnbound() when it finds
> that the session has timed out. Also note that it only checks for
> timeouts every 1 second, so that's the shortest time-out value that
> is honored.
> 2) In order to save and reload the session data, all objects in the
> session must be serializable, e.g. implement java.io.Serializable.
> Your FileList class doesn't, so it can be saved and reloaded, hence
> the valueUnbound() method is never called after a restart.
>
> Arguably, there's still a bug here. There's a comment in the Standard-
> Session class for the method that saves the session data that any object
> that is not serializable "will be unbound from the session, with
> appropriate actions if it implements HttpSessionBindingListener," which
> I assume mean valueUnbound() will be called. I don't see any signs of
> this being done, however. You may want to file a bug report about this.
>
> For a class that implements Serializable, however, everything seems to
> work as it should in 4.1.24.
>
> Hans
>
> > ----- Original Message -----
> > From: "David Thielen" <[EMAIL PROTECTED]>
> > To: ""Hans Bergsten"" <[EMAIL PROTECTED]>
> > Cc: "Tomcat - dev" <[EMAIL PROTECTED]>
> > Sent: Sunday, March 30, 2003 1:04 PM
> > Subject: Re: HttpSessionBindingListener.valueUnbound() not called
> >
> >
> > Nope - with 4.1.24 I still get called for valueBound() but not
> > valueUnbound().
> >
> > Any other ideas?
> >
> >
> > code:
> >
> > public class FileList implements HttpSessionBindingListener {
> > public void valueBound(HttpSessionBindingEvent event) {
> > event.getSession().getServletContext().log( "bind" );
> > }
> >
> > public void valueUnbound(HttpSessionBindingEvent event) {
> > // never logged
> > event.getSession().getServletContext().log( "unbind" );
> > }
> > }
> >
> >
> >
> >
> >
> > ----- Original Message -----
> > From: "Hans Bergsten" <[EMAIL PROTECTED]>
> > To: "Tomcat Developers List" <[EMAIL PROTECTED]>
> > Sent: Saturday, March 29, 2003 2:19 PM
> > Subject: Re: HttpSessionBindingListener.valueUnbound() not called
> >
> >
> >
> >>David Thielen wrote:
> >>
> >>>Hi;
> >>>
> >>>I have an object that implements HttpSessionBindingListener. It calls
> >>>valueBound fine. But it never calls valueUnbound. Not when it times out
> >>
> > and
> >
> >>>not when Tomcat is closed. I am running 4.1.18.
> >>>
> >>>Any ideas?
> >>
> >>It works fine in TC 4.1.24, so you may want to upgrade.
> >>
> >>Hans
> >>--
> >>Hans Bergsten <[EMAIL PROTECTED]>
> >>Gefion Software <http://www.gefionsoftware.com/>
> >>Author of O'Reilly's "JavaServer Pages", covering JSP 1.2 and JSTL 1.0
> >>Details at <http://TheJSPBook.com/>
> >>
> >>
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> >>
> >>
> >
> >
> >
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>
>
> --
> Hans Bergsten <[EMAIL PROTECTED]>
> Gefion Software <http://www.gefionsoftware.com/>
> Author of O'Reilly's "JavaServer Pages", covering JSP 1.2 and JSTL 1.0
> Details at <http://TheJSPBook.com/>
>
>
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