[CDBI] Re: uniqueness of objects in memory??

Phil Mitchell phil at 2people.org
Tue Oct 25 04:48:17 BST 2005


On 10/24/05, Rod McChesney <rod.mcchesney at gmail.com> wrote:
> If the user object has been GC'ed then the object index won't see it,
> right? Does the Catalyst session serialize the object in some way,
> e.g. FreezeThaw or Data::Dumper? That would do it, I imagine...

The Catalyst session plugin I'm using is based on Cache::FastMmap.
What does GC stand for...?

>
> Rod
>
> On 10/24/05, Phil Mitchell <phil at 2people.org> wrote:
> > On 10/24/05, Perrin Harkins <perrin at elem.com> wrote:
> > > On Mon, 2005-10-24 at 15:07 -0700, Phil Mitchell wrote:
> > > > OTOH, I can run essentially the same code inside a single template
> > > > inside my app:
> > > >
> > > > [% prefs.home_page %]<br>  => X
> > > > [% user.prefs.home_page %]<br>  => X
> > > >
> > > > [% prefs.home_page('Y') %]<br>
> > > > [% prefs.update() %]<br>
> > > >
> > > > [% prefs.home_page %]<br>  => Y
> > > > [% user.prefs.home_page %]<br> => X
> > > >
> > > > ...and see the weird behavior.
> > >
> > > Possible cloning side effects from the TT stash?
> > >
> > > You can identify if the two refs are pointing to the same object by
> > > printing their refaddr() values with Scalar::Util.
> >
> > Yes, they are indeed different! However, my tests suggest it's not an
> > issue with TT stash cloning. Using refaddr, I can watch what happens
> > in my controller, and they're distinct before they ever get to the
> > stash. Apparently CDBI can't see the Prefs object that's referenced by
> > the User object that's stored in the catalyst session object. I'm
> > suspicious of the session object, bc I've been able to replicate this
> > behavior with another class, just by sticking it into the session
> > object.
> >
> > For sanity's sake, here's the sequence:
> >
> > User logs in and User object is saved to session
> > User has a prefs object
> > User wants to edit prefs
> > Prefs object is retrieved from db
> > Prefs object is updated
> > User->prefs is not refreshed
> >
> >
> >
> >
> > >
> > > - Perrin
> > >
> > >
> >
> >
> > --
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> >
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