Hi Stephen, Would also be great if you write such limitations somewhere in the documentation. Or maybe it is already described but I missed the link. In such case please drop the link.
Sincerely, Alex On Mon, Nov 22, 2010 at 8:39 PM, Stephen Johnson <[email protected]>wrote: > From what I know you don't get sessionDestroyed. I believe there's a couple > of issues with notification of a destroyed session and the most significant > one would be that there's no guarantee that an instance of your application > will even be running (1.4.0 will allow reserved instances but that isn't out > yet.) Other issues would be that since this is a distributed environment > which instance should receive sessionDestroyed. GAE would have to implement > this one their backend. I believe sessions currently are just created by the > Servlet Context of an instance when necessary and that instance's > sessionCreated is the one that is executed. > > You however can query the _ah_SESSION table to see if a given session is > still active or has expired. > > > On Mon, Nov 22, 2010 at 9:32 AM, Sergiy Arendar <[email protected]> wrote: > >> Hi, I have a problem: >> In my application I'm using HttpSessionListener to manage sessions. >> Here is the class: >> >> package com.sergiyarendar.listeners; >> >> import java.util.logging.Logger; >> import javax.servlet.http.HttpSessionEvent; >> import javax.servlet.http.HttpSessionListener; >> import com.sergiyarendar.services.CounterService; >> >> public class SessionListener implements HttpSessionListener{ >> private static final Logger log = >> Logger.getLogger(SessionListener.class.getName()); >> private static int sessionNumber; >> public void sessionCreated(HttpSessionEvent se){ >> log.info("Session Created"); >> sessionNumber = CounterService.getSessionNumber(); >> sessionNumber++; >> CounterService.setSessionNumber(sessionNumber); >> } >> public void sessionDestroyed(HttpSessionEvent se){ >> log.info("Session Destroyed"); >> sessionNumber = CounterService.getSessionNumber(); >> sessionNumber--; >> CounterService.setSessionNumber(sessionNumber); >> } >> } >> >> This is what I have in web.xml file: >> >> <listener> >> >> <listener-class>com.sergiyarendar.listeners.SessionListener</listener- >> class> >> </listener> >> >> The problem is that public void sessionCreated(HttpSessionEvent se) >> method is invoked if a new session is created, BUT public void >> sessionDestroyed(HttpSessionEvent se) method is never invoked. I'm >> setting the timeout for the sessions using setMaxInactiveInterval(120) >> method when the session begin. >> >> Can anyone say me what is the problem? Is it a GAE bug, or some thing >> is wrong with my code? Please, it is very important, becouse whithout >> sessionDestroyed() method I can't do any tasks of session management >> when the session is destroyed. >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Google App Engine for Java" group. >> To post to this group, send email to >> [email protected]. >> To unsubscribe from this group, send email to >> [email protected]<google-appengine-java%[email protected]> >> . >> For more options, visit this group at >> http://groups.google.com/group/google-appengine-java?hl=en. >> >> > -- > You received this message because you are subscribed to the Google Groups > "Google App Engine for Java" group. > To post to this group, send email to > [email protected]. > To unsubscribe from this group, send email to > [email protected]<google-appengine-java%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/google-appengine-java?hl=en. > -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
