RE: [aspectj-dev] Selective method calls and returns

["Ron Bodkin" <rbodkin@xxxxxxxxxxxxxx>]

Hi Oleg, 

Does after returning advice on the same pointcut meet your needs? If not,
why? Are you trying to share state between the before and after returning
advice?

By the way, one thing to consider in using cflowbelow is whether you might
have a situation where A calls a helper class, that calls back on B. If you
don't want to capture those calls to B, using !cflowbelow matches your
requirements.

-----Original Message-----
From: aspectj-dev-bounces@xxxxxxxxxxx
[mailto:aspectj-dev-bounces@xxxxxxxxxxx] On Behalf Of Oleg Lebedev
Sent: Thursday, May 12, 2005 4:01 PM
To: AspectJ developer discussions
Subject: [aspectj-dev] Selective method calls and returns

Greetings.

I am wondering if you could help me with the following interesting
problem.

I need to track executions of all public methods in a given class.
Some of the public methods call other public methods, but only the top
ones should be tracked when called.
So, if methods A and B are public and A calls B internally, then when A
is called only A execution should be tracked and B execution should not
be tracked. However, if B is directly called by some external class,
then it should be tracked as well.

Suppose allPublic() pointcut describes all public method executions in
the class, then the following advice will do what I want:

before () : allPublic() && !cflowbelow(allPublic()) {}

Here is the tricky part. I also need to track when methods picked up by
this advice return. So, in the case above, if method A is called, and
then internally calls method B, I only want to know when method A
returns, and ignore the return of method B. However, if method B is
called by some external class (and therefore is picked up by the advice
above), then I need to know when B returns as well.

Any ideas?

Thanks.

Oleg
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