[jboss-jira] [JBoss JIRA] Commented: (JBPORTAL-1094) ClassCastException when casting SubSession to List in PortalSessionSynchronizationInterceptor

[Poul Bildsoee Moeller (JIRA)]

    [ http://jira.jboss.com/jira/browse/JBPORTAL-1094?page=comments#action_12346010 ] 
            
Poul Bildsoee Moeller commented on JBPORTAL-1094:
-------------------------------------------------

I felt that I had to investigate a bit further on this one since I was sure that the error couldn't be as "simple" as described first. 

I have found out that the PortletSessionSynchronizationInterception holds the logic that places a List as the "subsession" attribute. So now I know what was meant to happen. In my case the PortletSessionSyncronizationInterceptor isn't called for some reason.  Therefore the attribute in mention isn't a List resulting in the ClassCastException. 

The way I see it now there probably isn't any error in the portal code but more likely a need for error feed back or maybe a redesign to remove the "subsession" attribute obfuscation. The error must be in my cluster configuration or some place else. I will comment further on this matter.

> ClassCastException when casting SubSession to List in PortalSessionSynchronizationInterceptor
> ---------------------------------------------------------------------------------------------
>
>                 Key: JBPORTAL-1094
>                 URL: http://jira.jboss.com/jira/browse/JBPORTAL-1094
>             Project: JBoss Portal
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: Portal Portlet
>    Affects Versions: 2.4 Final, 2.4.1 Final, 2.6.Alpha1
>         Environment: Portal Clustered using both Portal-ha-2.4.1CR1 and 2.4.0-ha running on JBoss AS 4.0.4
>            Reporter: Poul Bildsoee Moeller
>         Assigned To: Julien Viet
>            Priority: Minor
>             Fix For: 2.4.1 Final, 2.6.Alpha1
>
>
> In org.jboss.portal.portlet.aspects.portlet.PortalSessionSynchronizationInterceptor the following code is executed (code partially inserted):
> HttpSession session = req.getSession(false);
>          if (session != null)
>          {
>             ss = (SubSession)session.getAttribute(key);
>          }
>          //
>          try
>          {
>             // Set the sub session for the portlet synchronization
>             if (ss != null && ss.isActivated())
>             {
>                invocation.setAttribute("subsession", ss);
>             }
>             //
>             invocation.invokeNext();
>          }
>          finally
>          {
>             List modifications = (List)invocation.getAttribute("subsession");
> The code sets the SubSession as an attribute on invocation and then later tries to fetch this again and at the same time cast to List. This doesn't work since SubSession isn't a List. I am not sure what is meant to happen so I cannot really fix the problem myself.

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