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From: "Kunnath, Radjhakrishnan [HCSUS Non-J&J]" <RKunnath@HCSUS.JNJ.com>
To: Carlin Rogers <carlin.rogers@gmail.com>
Cc: user@beehive.apache.org
Subject: RE: NullPointerException on Controls
Date: Tue, 27 Mar 2007 11:28:37 -0400
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We were able to reproduce the NPE. The users click a link and they do not
wait for the response to be completed. They click another link and then they
go back to the same first link and click again. This produces the NPE.

Any thoughts ?

-RK

-----Original Message-----
From: Carlin Rogers [mailto:carlin.rogers@gmail.com]
Sent: Thursday, March 22, 2007 6:26 PM
To: Kunnath, Radjhakrishnan [HCSUS Non-J&J]
Cc: user@beehive.apache.org
Subject: Re: NullPointerException on Controls


Forgot to copy the user list...

On 3/22/07, Carlin Rogers <carlin.rogers@gmail.com> wrote:
> It would be great to get a consistent reproduction. My first guess
> would be that somehow the session is being invalidated before the call
> to the control in the action. PageFlowController implements
> HttpSessionBindingListener so that it gets a valueUnbound() event from
> the container when a session is being invalidated. This allows the
> page flow controller class to clean up any resources, including
> controls.
>
> Another thought would be an issue with inheritance that was recently
> fixed in 1.0.2.
> Are you using inheritance for your page flows? If so, do any of the
> base class page flow controllers contain controls? See...
>
> http://issues.apache.org/jira/browse/BEEHIVE-1060
>
> Carlin
>
> On 3/22/07, Kunnath, Radjhakrishnan [HCSUS Non-J&J]
> <RKunnath@hcsus.jnj.com> wrote:
> >
> >
> >
> > Carlin,
> >
> > Thanks for your response. Before I answer your questions, this is the
> > environment we are using
> >          1. IDE is workshop for weblogic
> >          2. Beehive framework ver is 1.0
> >          3. weblogic server 9.2 deployed in Unix box.
> >
> > Answers to you question:
> >
> >
> > 1.      No. we do not have any other exception before this exception.
> > 2.      We tested it manually. We did not use any s/w. I assume the user
> > sessions will be unique.
> > 3.      Session invalidation is done during the log off process.
> > 4.      In this case, the ViewController calls a page which as a iframe
and
> > the webpage with in the iframe uses their own Page flow controllers. In
some
> > cases calls to controls are made and in some other cases it is not.
> >
> > The log trace I sent is just one instance of it. There are multiple
> > instances of calls to controls, especially, JDBC controls and Control
> > implementation , throws NPE sporadically and cannot be reproduced
> > consistently.
> >
> > Any help would be really appreciated.
> >
> > Thanks,
> > RK
> >
> >
> >
> >
>

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