To clarify: I'd say it's a little bit more complicated in its approach
- is it worth the added complexity?
regards,
Martin
On 1/21/06, Martin Marinschek <[EMAIL PROTECTED]> wrote:
> Hmmm....
>
> that could work.
>
> the question is if it is any better than letting the component extend
> from a marker interface and implement the functionality itself.
>
> Thoughts?
>
> regards,
>
> Martin
>
> On 1/20/06, Mario Ivankovits <[EMAIL PROTECTED]> wrote:
> > Hi
> > > ad 1) no - not even protected is allowed. The problem is that you
> > > don't want an application to rely on a certain implementation of the
> > > api - you change the api, and nothing works anymore ;)
> > >
> > Ok, thats bad.
> > > ad 2) yes, well, instanceof to UIData is bad. There I'm completely
> > > d'accord with Simon. But an instanceof to an interface defining some
> > > generic behaviour is pretty ok in my opinion. not marker interface
> > > instead of instanceof, but instanceof to marker interface instead of
> > > to UIData.
> > >
> > Ok, I understand.
> >
> > There is still one last idea, a little bit complicated, but this avoids
> > this marker interface too.
> > You could have a TraversePolicyProvider.
> >
> > Lets speak code:
> >
> > TraversePolicyFactroy.register(UIComponent.class, new
> > TraverseComponentChildren());
> > TraversePolicyFactroy.register(UIData.class, new TraverseDataChildren());
> >
> > Then on TraversePolicyFactroy:
> > TraversePolicy create(UIComponent component)
> > {
> > find a TraversePolicy for component.getClass() or one of its super
> > classes.
> > return it;
> > }
> >
> > Somewhat complicated, but hey it works. Is extensible and didnt need any
> > change on the api and no marker interface.
> >
> >
> > Ciao,
> > Mario
> >
> >
>
>
> --
>
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>
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