On Thu, 2004-02-26 at 12:04, Ian Bicking wrote:
> Geoffrey Talvola wrote:
> > I think I agree with you, Jason -- Webware should provide an easy
> hook to
> > swap in a subclass for a key class like Session and it shouldn't
> feel like a
> > hack. The Mixin stuff feels like too much of a hack, and adding a
> bunch of
> > hooks at specific places in the code just adds clutter.
> >
> > Perhaps a setting in Application.Config could specify classes to
> use in
> > place of the standard classes:
> >
> > 'CustomClasses':
> > {
> > 'Session': 'MyPackage.MyModule:MySession' ,
> > 'Request': 'MyPackage.MyModule:MyRequest'
> > }
>
> I think this allows customizability, but not extensibility. It's
> customizable because you can alter the appserver without modifying
> the
> main source. But it's not extensible, because it can only be done
> once
> per installation for each main class.
Good point Ian. I think this is an important distinction to make.
We've talked before about wanting to make it possible to use
pre-fabricated components in Webware which weren't necessarily written
to be aware of each other, enabling Webware developers to factor general
functionality out of their apps and share them with each other. Obviously
we need extensibility as you describe above if we expect multiple components
to play together nicely.
I've been thinking more about the idea of using signals/events as a
metaphor for this, as you suggested. This idea certainly appears to
have been a breakthrough in the gui toolkit world (specifically GTK).
I looked at your Component/CPage stuff a while back (in the sandbox).
Have you been using that model for much Webware development? Have you
been happy with it?
I'm going to take a look at http://pydispatcher.sourceforge.net/ and see how
it might fit in (thanks for the link, Max!).
peace,
Jason
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