This shouldn't be too difficult. Just have your decorator implement
ControllerSingleton, then you will get an init method in which the
controller node from maverick.xml is passed in.
If you had a controller node that looked like:
<controller class="com.foo.bar.MyControllerDecorator">
<decorated class="com.foo.bar.SomeExistingController">
</controller>
Your decorator could hold an internal controller. When the decorator's go
method was called, it could call go on the decorated controller, read the
result and the model, and still do its own thing. This is actually similar
to what I just sent as the CompositeController.
--jim
----- Original Message -----
From: "Roy Truelove" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Friday, August 09, 2002 12:04 PM
Subject: [Mav-user] Using "decorator" pattern on controllers
> Hey all,
>
> I'm looking into the feasablity of using the Decorator pattern* to
> create Controllers. In the friendbook example, each controller inherits
> from another controller which inherits from another controller, each one
> adding a little functionality. The problem with this is that you can't
pick
> and choose which controllers you want to use, you have to use extentions
of
> extentions. This would certainly help with the composite view issues that
> are being discussed, as well as securing controllers, etc.
>
> The problem is .. how can this be done while keeping Maverick backwards
> compatable *and* keeping configuration to a minimum? Any ideas? Since
> controllers are instantiated using reflections and not explicitly, is the
> Decorator pattern even possible?
>
> *Decorator pattern info :
> http://www.javaworld.com/javaworld/jw-12-2001/jw-1214-designpatterns.html
>
> -Roy
>
>
>
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