Now I knew there was something like that! Turns out I was looking at servlet 2.2 specs and that only had HttpSessionBindingListener!!! Duh!
Thanks Daniel. > -----Original Message----- > From: Frank W. Zammetti [mailto:[EMAIL PROTECTED] > Sent: 25 July 2005 17:59 > To: Struts Users Mailing List > Cc: Struts User List > Subject: Re: [OT] saving stats from session when session destroyed > > > SessionListener is what you want. > > Here's an example from one of my apps (condensed for space)... it is used > to delete a temporary PDF that may have been generated for the user when > they log off: > > import company.app.User; > import javax.servlet.http.HttpSession; > import javax.servlet.http.HttpSessionEvent; > import javax.servlet.http.HttpSessionListener; > public class MySessionListener implements HttpSessionListener { > public synchronized void sessionCreated(HttpSessionEvent se) { > } > public synchronized void sessionDestroyed(HttpSessionEvent se) { > HttpSession sess = se.getSession(); > User user = (User)sess.getAttribute("user"); > String userID = user.getUserID(); > AppHelpers.deletePDF(userID); > } > } > > -- > Frank W. Zammetti > Founder and Chief Software Architect > Omnytex Technologies > http://www.omnytex.com > > On Mon, July 25, 2005 12:47 pm, Daniel Perry said: > > I have an app where i need to record key user stats, which are > updated by > > certain struts actions. The problem is that i want to keep these in the > > session, and then only save them to the database when the session is > > either > > invalidated through logout, or when it times out and is removed by the > > server. It doesnt matter if some stats are lost through crashes, server > > restarts, etc. > > > > I cant see an obvious way to find out when sessions are destroyed. > > > > Would it be possible to have a class called stats, which is put into the > > session, and override the finalize method, so that this writes to the > > database the calls super.finalize? Would this work? > > > > If i make this serializable, what happens if the server decides > to remove > > this session after writing to disk - does it just delete the > file, or does > > it reserialize it and call finalize? > > > > Thanks, > > > > Daniel. > > > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
