Re: [aspectj-users] Beginner question: intercepting method within a cer

[Andy Clement <andrew.clement@xxxxxxxxx>]

Hi Michael,

The execution joinpoint is not what you want.  execution of
MessageInvocation.invoke() will be happening 'over there' in the
MessageInvocation type.  You are interested in the join point that
calls it in the Dispatcher type.

Try:

 @After("call(* my.package.MessageInvocation.invoke(..)) &&
withincode(* Dispatcher.dispatch(..))")

Although without trying it out I can't tell you if the anonymous inner
class will interfere with things.

Andy

On 10 May 2010 03:09, Michael Kober <michael.kober@xxxxxxxxxx> wrote:
> Hi,
>
> I'm an AspectJ beginner and have the following problem:
>
> I want to add an aspect after a method call but only when it is done in a
> certain context (see following pseudo-code):
>
> class Dispatcher:
>
> public void dispatch(MessageInvocation invocation)  {
>         new Thread(new Runnable() {
>            @Override
>             public void run() {
>                 // do some stuff...
>                 do {
>                     if (lock.tryLock()) {
>                         try {
>                             messageInvocation.invoke();
>                         } finally {
>                           lock.unlock()
>                         }
>                       }
>                } while (someCondition)
>             }
>         }).start();
>
> I want to intercept the invoke() method of MethodInvocation, but only when
> it is called in the context of the dispatch method in class Dispatch. Is
> this possible? I tried to use within / withincode but without success - but
> maybe I'm just getting the pointcut definition wrong (I use Annotation
> style):
>
> @After("execution(* my.package.MessageInvocation.
> invoke(..)) && withincode(* Dispatcher.dispatch(..))")
>
> Any help appreciated.
> Thanks
> Michael Kober
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