What we want is a generic model. IModel<List<Person>> etc.
Eelco
On 2/10/06, VGJ <[EMAIL PROTECTED]> wrote:
> You'll have to forgive my ignorance as I've only been using Java for about a
> year, but - why can't generics be used? Wouldn't you still be able to use a
> List without supplying a type (i.e. new ArrayList() vs. new
> ArrayList<MyClass>()) - thus making it backward-compatible? I've only
> really gotten serious about java since 5.0, so I'm sure I'm missing
> something obvious. I just know that I've been able to use non-generic
> collections while using JDK 5.0.
>
> It'd be nice to see Wicket go 5.0 soon as JDK 6.0 is quickly coming to
> fruition. I know the ususal response to that is "vendors aren't as quick to
> adopt a new JDK" but I would think that would accelerate a little now that
> JDK releases aren't so slow to be released these days (probably to compete
> w/ .NET and others.)
>
>
> On 2/10/06, Eelco Hillenius <[EMAIL PROTECTED]> wrote:
> > There are, but it is undecided yet. It won't happen for 1.x, because
> > we want to support all the people that are using Wicket now with JDK
> > 1.4. For 2.0 that might be another question, which still has to be
> > decided upon - but which at least has a few proponents, including
> > yours truely.
> >
> > Eelco
> >
> >
> > On 2/10/06, Mats Norén <[EMAIL PROTECTED]> wrote:
> > > Are there any thoughts about using generics?
> > >
> > > On 2/10/06, Eelco Hillenius < [EMAIL PROTECTED]> wrote:
> > > > Yep, that's it. Instead of passing your domain object directly, you
> > > > might consider putting it behind a IModel instance:
> > > >
> > > > public class HeaderPanel extends Panel
> > > > {
> > > > public HeaderPanel(String id, IModel blog)
> > > > {
> > > > super(id);
> > > >
> > > > add(new Label("name", new PropertyModel(blog, "name"));
> > > > add(new Label("synopsis", new PropertyModel(blog,
> "synopsis"));
> > > > }
> > > > }
> > > >
> > > > or
> > > >
> > > > public class HeaderPanel extends Panel
> > > > {
> > > > public HeaderPanel(String id, IModel blog)
> > > > {
> > > > super(id, new CompoundPropertyModel(blog));
> > > >
> > > > add(new Label("name"));
> > > > add(new Label("synopsis"));
> > > > }
> > > > }
> > > >
> > > > Pro for using IModel instead of domain object: you can later decide to
> > > > use detachable models, which is usually a good idea when you use
> > > > Hibernate (otherwise you'll end up with stale Session references in
> > > > your objects) and which will use less session memory.
> > > >
> > > > Con: it's more work, makes the code harder to follow, you have to do
> > > > refactorings of properties by hand and less efficient if memory is not
> > > > a problem.
> > > >
> > > > Oooh, I whish we could use generics for the core project so that the
> > > > first few cons were eliminated.
> > > >
> > > > Eelco
> > > >
> > > >
> > > > On 2/10/06, V. Jenks <[EMAIL PROTECTED]> wrote:
> > > > > I'm having a little trouble understanding how to use Panels
> correctly.
> > > > >
> > > > > I'm trying to convert a JSP that has many JSP 2.0 tagfile "includes"
> of
> > > > > which I pass objects into so they can display some of the data that
> the
> > > > > "master" JSP tag displays.
> > > > >
> > > > > In Wicket, I've re-created the tagfiles as Panels and I'm trying to
> pass
> > > > > data to them from the "master" page class through the Panels'
> > > > > constructors..like so:
> > > > >
> > > > > public class HeaderPanel extends Panel
> > > > > {
> > > > > public HeaderPanel(String id, Blog blog)
> > > > > {
> > > > > super(id);
> > > > >
> > > > > add(new Label("name", blog.getName()));
> > > > > add(new Label("synopsis", blog.getSynopsis()));
> > > > > }
> > > > > }
> > > > >
> > > > > I'm guessing that this is the way to do this as I haven't been able
> to
> > > > > find any examples stating otherwise.
> > > > >
> > > > > Am I on the right track? Maybe the wiki could use a JSP-to-Wicket
> > > > > upgrade path type of document?
> > > > >
> > > > > Thanks!
> > > > >
> > > > >
> > > > >
> > > > >
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