With AspectJ you can use good citizen as well. I saw the wiki and a
nice solution was found. With AspectJ is you can code naturally like
(if you do not use the service in constructor):
MyPage page = new MyPage();
page.setService(mockService);
tester.startPage(page);
tester.assertRenderedPage(MyPage.class);
instead of setting the context mock, which is a nice solution as well.
I use the Injector only on BookmarkablePages otherwise I inject by hand -
a lot of real DI citicens. And for the BookmarkablePages I have two
constructors one which calls the Injector the other one which does not. So
I don't even have to set context mock. There is no difference to AspectJ.
I don't know if IoC means the container must manage the lifecycle, I
would go for something like "the environment is the responsible".
Using AspectJ you are setting the environment to do DI for you, so
inverting the control; the page (or its superclass) is not looking for
the dependency, an outside code it is.
Please see the arictel of Fowlers
(http://www.martinfowler.com/articles/injection.html). According to this
articel I'd say both AspectJ and the Injector use more the ServiceLocator
pattern than DI. The ServiceLocator is the SpringContext. Something Spring
is very proud of is that no bean is dependent on the ApplicationContext
(because of DI). However this is not true for either the AspectJ approach
nor the current Injector approach, because you'll always need a
ApplicationContext to look up the bean to inject.
I think for Wicket the current lookup aproach is very good (for various
reasons already discussed) and I realy do not see an advantage of AspectJ.
Beside this (the new) AspectJ has an issue with (old) CGLIB (see the CGLIB
users list) and this is extensively used in a lot of projects (like
Hibernate, Spring etc).
Christian
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