I guess you get your singleton using a static method. But how do you write your hivemodule.xml to do that ?
Mike Snare <[EMAIL PROTECTED]> wrote: I do a similar thing, and I have a standard, plain vanilla singleton that is accessed via a service wrapper by pages/services (purely for injection's sake) but is accessed via standard java by the listener. -Mike On 5/4/06, Haldane, Sam wrote: > > How would one access tapestry from a listener like this? For example, access > a tapestry application state object which holds the list of users. > > Sam > > -----Original Message----- > From: Martijn Hinten [mailto:[EMAIL PROTECTED] > Sent: Thu 5/4/2006 10:22 PM > To: Tapestry users > Subject: Re: List of logged users > > Implement a HttpSessionListener. This listener will be notified of all > sessions that are destroyed (it's sessionDestroyed() method will be > called). In that method you can check which user is logged off en remove > that user from the (applicationscope, I guess) list. > > See code sample below. > > Good luck, > Martijn > > An example of a session listener that just counts sessions: > > import javax.servlet.http.HttpSessionEvent; > import javax.servlet.http.HttpSessionListener; > > import org.apache.commons.logging.Log; > import org.apache.commons.logging.LogFactory; > > public class SessionWatcher implements HttpSessionListener { > > private static final Log log = LogFactory.getLog(HttpSessionListener.class); > > private static int activeSessions = 0; > > /* > * @see > javax.servlet.http.HttpSessionListener#sessionCreated(javax.servlet.http.HttpSessionEvent) > */ > public void sessionCreated(HttpSessionEvent event) { > activeSessions++; > > log.debug("Session created with id:"+event.getSession().getId() > +". No of active sessions:"+activeSessions); > System.out.println("Session created with id:"+event.getSession().getId() > +". No of active sessions:"+activeSessions); > > > } > > > /* > * @see > javax.servlet.http.HttpSessionListener#sessionDestroyed(javax.servlet.http.HttpSessionEvent) > */ > public void sessionDestroyed(HttpSessionEvent event) { > if(activeSessions > 0) { > activeSessions--; > } > log.debug("Session destroyed with id:"+event.getSession().getId() > +". No of active sessions:"+activeSessions); > System.out.println("Session destroyed with id:"+event.getSession().getId() > +". No of active sessions:"+activeSessions); > > } > > > } > > > Add something like this to your web.xml: > > > > com.zenz.mzz.view.listeners.SessionWatcher > > > > > > > Oscar Picasso wrote: > > >Hi, > > > >I am looking for advises on how to implement a use case that is, think, > >quite common. > > > >In my application users can log in. They can also loggout either explicitly > >or because of session timeout. > > > >In one part of my application I want to display the total number of logged > >users and a list of each of these users. > > > >My main problem is how to remove an user from the list when he is logged out > >implicitly by a session timeout. > > > >How would you solve this ? > > > >Thanks > > > > > >--------------------------------- > >How low will we go? Check out Yahoo! Messenger's low PC-to-Phone call rates. > > > > > > -- > > > *Cumquat Information Technology* > De Dreef 19 > 3706 BR Zeist > T +31 (0)30 - 6940490 > F +31 (0)10 - 6940499 > http://www.cumquat.nl > > [EMAIL PROTECTED] > M +31 6 22 384 318 > > > --------------------------------------------------------------------- > 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] --------------------------------- How low will we go? Check out Yahoo! Messengers low PC-to-Phone call rates.
