Hi ....

Yeah in our T4 app we don't use @Persist at all and we really control the
session-size ... we have been setting up to open source this code that
handles the session issues.

I have been wanting to get the code in better shape before releasing back to
the community ... but it is good enough. .. I just submitted the project to
sourceforge for consideration. I have to wait a few days for approval.

Patrick Moore
Amplafi
http://amplafi.com
650-207-9792
"copy/paste"
blog : http://www.sworddance.com/blog


On Sat, Nov 29, 2008 at 6:19 AM, Marcelo Lotif <[EMAIL PROTECTED]> wrote:

> I think this is very interesting too, and I have implemented something like
> this in a menu component I've made, but the solution is specific to my
> case.
>
> This persistence strategy would be a nice improvement, and would solve some
> problems we had with the session size.
>
> On Fri, Nov 28, 2008 at 7:23 AM, Peter Stavrinides <
> [EMAIL PROTECTED]> wrote:
>
> > Hi,
> >
> > I have been thinking about persistence lately... and after moving all our
> > apps from Tapestry 4 to Tapestry 5 this past year, I have noticed
> distinct
> > patterns emerge in the way pages fit together and use persistence, and I
> > have been searching all the while for best practices... here are some
> > comments on how persistence evolved in my code:
> >
> > @Persist - I tended to use it a lot in the beginning, but far less now, I
> > have found it optimal not to clutter the session, and therefore persist
> only
> > a select few fields (mostly primitives).
> >
> > @Persist("flash") - I moved to flash persistence wherever I could, as it
> > helps limit the number of queries required, but its not always feasible
> to
> > use. On the odd occasion I also ran into problems with render methods
> when
> > pages were complex.
> >
> > I now use mostly onActivate and onPassivate, this has proven to be the
> most
> > reliable pattern, and the most scalable. It does require a bit more
> > boilerplate code for checking that URL parameters are passed correctly,
> > particularly for pages that have 'optional parameters'... the one
> downside
> > is that I have a few more queries now.
> >
> > So whats missing in an ideal world? A read in a post some time ago that
> > conversational patterns may be added in 5.1, that would be great! but
> what
> > would be ideal in my humble view is a proper page persistence Strategy,
> > where a value is retained until the user leaves the page. In truth
> someone
> > posted such a solution which used a cookie, and it seemed to behave
> exactly
> > as it should, nevertheless I am still against relying on a cookie. I
> > understand this may be difficult to implement due to Tapestry's inner
> > workings, particularly the way pages are pooled, but since conversational
> > state covers some of this ground (the difference being a conversation is
> > tied to not only the page, but the window so each tab is treated as a new
> > conversation), I thought to at least to ask if it could be considered at
> > some point if at all feasible. I would also love to hear other peoples
> > thoughts/opinions on this.
> >
> > cheers,
> > Peter
> >
> >
> >
> >
> > ---------------------------------------------------------------------
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> > For additional commands, e-mail: [EMAIL PROTECTED]
> >
> >
>
>
> --
> Atenciosamente,
>
> Marcelo Lotif
> Programador Java e Tapestry
> FIEC - Federação das Indústrias do Estado do Ceará
> (85) 3477-5910
>

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