RE: ModelLifetime.discard() issue

I can't imagine what could cause that if reuseMaverickContext is
disabled.  Can you send me a testcase?

Jeff Schnitzer
[email protected]

> -----Original Message-----
> From: Trebor Carpenter [mailto:[email protected]]
> Sent: Friday, August 15, 2003 11:28 AM
> To: [email protected]
> Subject: RE: [Mav-user] ModelLifetime.discard() issue
> 
> Whoops, I was using the wrong test case and testing redirect not
> forward. When using forward I still have the same problem, even with
> reuseMaverickContext off.
> 
> --
> Trebor Carpenter, mailto:[email protected]
> 
> -----Original Message-----
> From: Trebor Carpenter
> Sent: Friday, August 15, 2003 12:11 PM
> To: [email protected]
> Subject: RE: [Mav-user] ModelLifetime.discard() issue
> 
> 
> Turning off reuseMaverickContext does indeed take care of this. I had
> forgotten I had that turned on. I originally turned it on simply
because
> that was the behavior before 2.2.0 made it optional, and I wasn't sure
> whether I needed it or not.
> 
> Thanks!
> 
> --
> Trebor Carpenter, mailto:[email protected]
> 
> -----Original Message-----
> From: Schnitzer, Jeff [mailto:[email protected]]
> Sent: Thursday, August 14, 2003 7:28 PM
> To: [email protected]
> Subject: RE: [Mav-user] ModelLifetime.discard() issue
> 
> 
> > From: Trebor Carpenter [mailto:[email protected]]
> >
> > Hi,
> 
> Hi!
> 
> > I'm using maverick 2.2.0 and running into a small inconsistency in
> > behavior. My controllers generally derive from FormBeanUser, and my
> > formBeans all implement ModelLifetime. The problem I'm seeing is
that
> if
> > I do a forward (using a null view type) from one controller to
> another,
> > the second controller's formBean gets discard() called twice and the
> > first controller's formBean does not get discard() called at all.
> >
> > I'm not sure what additional details would be useful to troubleshoot
> > this.
> 
> Do you have the "reuseMaverickContext" flag turned on?  I can see how
> this would cause trouble with null views.
> 
> The basic logic (in CommandBase) is:
> 
> try
> {
>     execute the controller
>     get the model from the context and store in local variable
>     execute the view
> }
> finally
> {
>     call model.discard()
> }
> 
> This works fine as long as the forward (and maverick context
recycling)
> occurs during view processing because we've already gotten a hold of
the
> model before the recursion.  However, when the forward occurs in the
> controller (as with a null view), we're doomed - the model gets
replaced
> in the context before we can get a reference.
> 
> I'm not sure there is a good solution to this problem.  Why do you
need
> "reuseMaverickContext" to be turned on?  I've never really liked this
> flag.
> 
> > Incidentally, this is my third project using Maverick. I have a very
> > small framework of classes that tie together Maverick, Formproc,
> TopLink
> > and I use Velocity for the view layer. Initially I had a very
> difficult
> > time persuading my colleagues that this was the way to go for us
> ("we've
> > never heard of it. jsp is standard! struts is standard!") But since
> then
> > two of them have also used it and are now full converts raving to me
> how
> > much they love Maverick and love Velocity. Obviously not the right
> > combination for all problems but near perfect in our case. Thanks
for
> a
> > great framework!
> 
> Thanks, we love hearing this stuff :)
> 
> Jeff Schnitzer
> [email protected]
> 
> 
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