Re: [aspectj-users] Abstract aspects

[Walter Cazzola <cazzola@xxxxxxxxxxxxx>]

Dear Andy, and Jordi,
to what I can understand Jordi's problem is related to an abstract
aspect (B) which extends another abstract aspect (A). Jordi's is
wondering why Eclipse complains about a still abstract pointcut in an
abstract aspect.

Without Jordi's code I can just suppose that Jordi didn't specify the
abstract keyword in the definition of B.

Just my 2¢

Walter

On Wed, 30 Jul 2008, Andy Clement wrote:

> Just as a concrete class at the bottom of a hierarchy must implement any
> inherited abstract methods, so a concrete aspect must provide a definition
> ('concretize') any abstract pointcuts it inherits, otherwise it is still an
> abstract aspect.
>
> abstract aspect Foo {
>  abstract pointcut scope();
>
>  before(): execution(* *(..)) && scope() {
>      System.out.println("Entering >"+thisJoinPoint);
>  }
> }
>
> aspect Goo extends Foo {
>  // must provide a definition of scope()
>  pointcut scope(): within(com.mypackages..*);
> }
>
> Andy.
>
> 2008/7/30 Jordi Monné <jmonne@xxxxxxxxx>
>
> > Hi all.
> >
> > I was working on some exercises to learn how AspectJ works. One of them was
> > to see how to extend abstracts aspects with AspectJ. I was trying to do
> > something like this:
> >
> > B(abstract) extends A(abstract)
> > C(concrete) extends B(abstract).
> >
> > Where A,B,C are aspects.
> >
> > I was wondering why Eclipse says to me that an inherited pointcut from A
> > was not made concrete in B. I read "Aspects extending aspects" from
> > http://www.eclipse.org/aspectj/doc/released/progguide/semantics-aspects.html#aspect-extensionbut it didn't help to me at all.
> >
> > Can someone give me some light about it?.
> >
> > Any help or pointers would be most appreciated.
> >
> > Thanks.
> >
> >
> >
> > _______________________________________________
> > aspectj-users mailing list
> > aspectj-users@xxxxxxxxxxx
> > https://dev.eclipse.org/mailman/listinfo/aspectj-users

--
Walter Cazzola, PhD - Assistant Professor, DICo, University of Milano
E-mail cazzola@xxxxxxxxxxxxx Ph.: +39 02 503 16300  Fax: +39 02 503 16100
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