i`ve been looking around for implementing graceful session expiration, and i`ve stumbled into useful bits of information here and there, but never saw this all in one place.
Here is a portion of main panel:
<rich:modalPanel id="sessionExpiredPanel" zindex="2000"
resizeable="false"
minWidth="100" minHeight="100"
width="100" height="100">
<h:outputText value="Your session has expired." />
</rich:modalPanel>
<a4j:region>
<script type="text/javascript">
A4J.AJAX.onExpired = function(loc, expiredMsg) {
Richfaces.showModalPanel('sessionExpiredPanel',{width:450, top:200});;
};
</script>
<a4j:form>
<a4j:poll id="sessioncheck" interval="620000" reRender="sessioncheck" />
</a4j:form>
</a4j:region>
and here is what session time out is set to in web.xml
<session-config>
<session-timeout>10</session-timeout>
</session-config>
The code is quite self-explanatory, but i`ll just repeat it: the idea is to have a separate empty a4j:poll that pings the server in periods bit larger then your session expiration. When session is expired and poll fires A4J.AJAX.onExpired override kicks in.
Hope this proves helpful to someone.
