Stefan makes a good point.  I have raised this as an example before.  

My site (online.ddpoker.com, just went live) is a mix of A and B.  To make
my code cleaner, I created several simple subclasses for cases where I don't
use models.  VoidPanel, VoidContainer (only a handful, really).  

Also, since all my pages subclass my BasePage, all I had to do was change
*that* page to subclass Page<Void> and voila, all my pages were proper.

I also created the following models to simply my life:  DateModel,
IntegerModel, DoubleModel, etc.  I did some fancier stuff with Generics,
including a decent drop-down list thing.

In the end, it was totally worth it.  Not only do I understand how wicket
works much better with Generics (because the code helps document it), but my
code is cleaner and easier to understand.

I also agree with Bill that developers should take the time to learn the
feature.  It can be quite powerful.

-Doug


Stefan Lindner wrote:
> 
> Brill Pappin wrote
>>I don't know, I think the discussion is going *toward* generics.
>>Frankly I can't even see why its an issue at all, the language has
> evolved and uses them... Why would Wicket not also use them its inline
> with >the current state of the language?
>>
>>There is no reason that people who can't get their heads around
> Generics can't use the older releases that don't include it, but IMO any
> java >developer who doesn't get generics yet better make some time to
> learn, because like it or not, they *will* be dealing with them.
> 
> I agree totally with you. My expericence with Generics over the last two
> years was that any project that was adopted to generics had much less
> errors afterwards.
> 
> But the main problem in this discussion seems to be that there are two
> very different sorts of Web Applications that are developed with wicket
> and both may have predecessors that are non generic.
> 
> Type A: A Web applicatons that make heavy use of Models, like classic
> desktop allications that are ported to the web. I think the programmers
> of such applications like Generics becaus they help them to avoid erros
> and the current wicket generic implementation leads to a strong typed
> application that needs a good object model (and a good database design).
> If you port an exisitng wicket application with no generic to wicket 1.4
> you might discover some unclear object model problems in your exisitng
> code. And it's always easier to point to wicket's generics than to blame
> your own code :-)
> 
> Type B: A Web Application with more static content, only some date (like
> user logins, user profile data). In this case it's clear that some
> people say "why should I always tyle 'Link<Void>', none of my links has
> a Model, just about 10% of my Components have a Model". But why dont't
> they write their own wrapper e.g. MyVoidLink extends Link<Void>? I
> remember a dicsusson about such Components some weeks ago.
> 
> 
> What do you think about it? Would it help users of Type B to have
> VoidComponents?
> 
> Stefan
> 
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