Re: [aspectj-users] Trying to find pointcut for direction recursive meth

[Simone Gianni <simoneg@xxxxxxxxxx>]

Hi steenreem,
AspectJ unfortunately does not support a mechanism similar to named 
references in regular expressions, so you have no way to express 
directly something like this :

withincode(group(* *(..))) && call(group))

and have it replace "group" with the current method signature as it 
scans the code.

So, as you properly guessed, you have to use the "if" pointcut, which is 
a performance nightmare but for a school test can work.

You should use thisEnclosingJoinPointStaticPart in the second part of 
your if (and thisJoinPointStaticPart in the first one, just to make it 
faster).

thisEnclosingJoinPointStaticPart contains the "lexically enclosing" 
joinpoint, so in this case :

public String doSomething() {
 return this.doSomethingElse();
}

if you match the call(* *.doSomethingElse()) the enclosing join point 
will be execution(..... doSomething()). You can implement your logic in 
your "if" using it.

Hope this helps,
Simone


steenreem wrote:
> Hello.
>
> I'm working on an assignment for school and I'm supposed to find all methods
> that are direct recursive.
> I haven't gotten very far yet. The pointcut I tried was:
>
> pointcut directionRecursion(): !adviceexecution()
>                 && withincode(* *(..))
>                 && call(* *(..));
>
> Now I need to specify that the method in 'withincode' is the same as in
> 'call'
>
> So I thought of using " && if(thisJoinPoint.getSignature().getName() == ...
> ) "
> But I can't get any further.
>
> After I finally get the pointcut right. I rather wouldn't write advice for
> this pointcut. Instead I just want to loop over all the pointcuts and for
> example print the method names of the recursive methods.
>
> Could someone explain to me how to do this?
> Thanks a bundle! 
>   


--
Simone Gianni            CEO Semeru s.r.l.           Apache Committer
http://www.simonegianni.it/