Yeah, this would be quite an elegant solution, if we can implement
that properly.
On 3/19/07, Johan Compagner <[EMAIL PROTECTED]> wrote:
> So pages should have a special serialization mechanism?
>
> When they are not the top component when serializing they do a
> replaceObject() ?
> (with the pagemap:id string)
>
> So when you are reading it back in. We get the page from the pagemap itself
> (and deserialize it)
> So that we always have one page for a specific pagemap:pageid in the cache
>
> So:
>
> PageA gets rendered
> PageA is saved to disk.
>
> PageB gets rendered and keeps a reference to PageA
> PageB gets saved.
> We also save PageA (But not as a member of PageB but as its own.. So
> overriding (of version number isn't increased!) PageA on disk)
>
> When PageB is get from disk again, PageA is also read in (again not as a
> member but directly from the pagemap)
>
> This way if you have large back references to pages (breadcrumbs) it won't
> really matter.. Pages are saved only once in there own file.
>
> johan
>
>
>
>
> On 3/19/07, Matej Knopp <[EMAIL PROTECTED]> wrote:
> >
> > Okay, take this scenario:
> > Using second level sessionstore, with multiwindow support off (default).
> >
> > You open two pages in two different tab. By default they are in same
> > (default) pagemap. In one of the window, you have modal window with a
> > page. The page inside modal window is in it's own pagemap, and
> > contains reference to parent page (that is in default pagemap).
> >
> > The page in modal window do changes to outer page instance. When you
> > close modal window, you'll return to the outer page. If you're lucky
> > it's the same instance as the inner page referenced.
> >
> > However, if you, in another tab, interact with other page from default
> > pagemap, the modal window parent page gets saved to disk and the modal
> > window contains reference to page that will not be used anymore.
> >
> > -Matej
> >
> > On 3/19/07, Johan Compagner <[EMAIL PROTECTED]> wrote:
> > > What do you mean lose all changes to the page?
> > >
> > >
> > >
> > > On 3/19/07, Matej Knopp < [EMAIL PROTECTED]> wrote:
> > > >
> > > > Well, I guess it should work then. Still, it seems to be quite fragile
> > > > solution to me. Because as soon as the original page moves to disk
> > > > (e.g. in another tab you visit another page in that pagemap) you lose
> > > > all changes to the page.
> > > >
> > > >
> > > >
> > > > On 3/19/07, Johan Compagner < [EMAIL PROTECTED]> wrote:
> > > > > yes every pagemap has an active page.
> > > > >
> > > > >
> > > > >
> > > > > On 3/19/07, Matej Knopp < [EMAIL PROTECTED]> wrote:
> > > > > >
> > > > > > Will that work for secondlevelcachesessionstore as well? If so, it
> > > > > > should only be matter of calling
> > > > > > modalWindow.setPageMapName("myWindowPageMap");
> > > > > >
> > > > > > -Matej
> > > > > >
> > > > > > On 3/19/07, Johan Compagner < [EMAIL PROTECTED]> wrote:
> > > > > > > different pagemaps?
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > > On 3/19/07, Matej Knopp < [EMAIL PROTECTED] > wrote:
> > > > > > > > Yes. Two active pages. He passes reference from one page to
> > > another.
> > > > > > > > The other page modifies the reference. But he doesn't return
> to
> > > the
> > > > > > > > previous page using setResponsePage(). That would work, but
> this
> > > is
> > > > > > > > not the case. Because here the other page is in an iframe of
> the
> > > first
> > > > > > > > page. As far as I know there is no workaround for this atm.
> Johan,
> > > any
> > > > > > > > idea?
> > > > > > > >
> > > > > > > > And yes, this has changed recently, because we have removed
> > > > > > > > softreference cache from secondlevelsessionstore, as it had a
> very
> > > bad
> > > > > > > > scalability impact.
> > > > > > > >
> > > > > > > > -Matej
> > > > > > > >
> > > > > > > >
> > > > > > > > On 3/19/07, Johan Compagner <[EMAIL PROTECTED]> wrote:
> > > > > > > > >
> > > > > > > > >
> > > > > > > > > > But. There is bigger problem than this. The problem with
> two
> > > > > different
> > > > > > > > > > instances of one page. I don't see easy solution for this.
> > > > > Normally,
> > > > > > > > > > this is not an issue, because if you keep page instance,
> you
> > > > > usually
> > > > > > > > > > call setResposnePage(instance) to get to it. However, this
> is
> > > not
> > > > > the
> > > > > > > > > > case with modal window. So if you keep reference to modal
> > > window
> > > > > page,
> > > > > > > > > > and then change it's state, it won't help you, because
> wicket
> > > > > reads
> > > > > > > > > > the serialized age anyway.
> > > > > > > > >
> > > > > > > > >
> > > > > > > > > so in this scenario there are really 2 "active" pages?
> > > > > > > > >
> > > > > > > > > johan
> > > > > > > > >
> > > > > > > > >
> > > > > > > > >
> > > > > > > > >
> > > > > > > > >
> > > > > > >
> > > > >
> > >
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