I dont care, because i cant do any thing with the ? The only thing it
enforces is that it must now be a generic class which is annoying. Not
to mention that in that area eclipse and javac accept different
things....
So or we in wicket dont use <?> any where and have supress warning
everywhere for that or we do use it and then suddenly it is in my eyes
restricted to much.
On 5/14/08, Sebastiaan van Erk <[EMAIL PROTECTED]> wrote:
> Johan Compagner wrote:
> > yes thats the reason
> >
> > you are calling the method add with a generified component but that
> > container itself is not generified
> >
> > i dont like this about generics expecially the onces like this:
> >
> > add(MarkupContainer<?> container)
> >
> > then suddenly a none generified component cant be added...
> > thats really stupid <?> should mean anything.. including none generics
>
> No, that's not correct. For example, List<?> is much more restrictive
> than a raw List (which is a List<Object>). To a raw list you can add an
> instance of any type whatever, i.e., list.add(new Object()). But in
> List<?> the ? is a wildcard which says it could be any type there, i.e.,
> it could be a List<Integer>. But you can't add a new Object() to a
> List<Integer>!
>
> Thus MarkupContainer<?> means "MarkupContainer parameterized by some
> unknown type", and *not* MarkupContainer parameterized by Object, which
> is what the raw type means.
>
> Regards,
> Sebastiaan
>
> > johan
> >
> >
> > On Tue, May 13, 2008 at 5:55 PM, Stefan Simik <[EMAIL PROTECTED]>
> > wrote:
> >
> >> I have one idea,
> >>
> >> the reason of the warnigs is, that parent of AjaxPagingNavigator is
> >> PagingNavigator,
> >> which has parent Panel ---> that is not parameterized.
> >>
> >> The same problem is with LoopItem, which extends the
> >> WebMarkupContainer ---> that is not parameterized.
> >>
> >> ? could this be the reason ?
> >>
> >>
> >>
> >>
> >>
> >>
> >> Stefan Simik wrote:
> >>> Mhmm, it is meaningful ;) I will know in future, thx
> >>>
> >>> One of the last occuring warning is, when working with
> >>> MarkupContainer#add(...) or #addOrReplace(...) method.
> >>>
> >>> Example: I have a simple AjaxPagingNavigator, to which I add a simple
> >>> ListView
> >>> -----------------------------------------------------------------------
> >>> ListView<Integer> menu = new ListView<Integer>("id", numbers){
> >>> //....populate metods
> >>> }
> >>> add(menu); //warning here
> >>>
> >>> The warning says:
> >>> "Type safety: The method add(Component...) belongs to the raw type
> >>> MarkupContainer.
> >>> References to generic type MarkupContainer<T> should be parameterized"
> >>>
> >>> I cannot find out, what's the warning reason, because ListView self is
> >>> parameterized.
> >>>
> >>>
> >> --
> >> View this message in context:
> >>
> http://www.nabble.com/Using-generics-with-some-non-generic-classes-in-Wicket-tp17208928p17212015.html
> >> Sent from the Wicket - User mailing list archive at Nabble.com.
> >>
> >>
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> >>
> >
>
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