| RE: [aspectj-users] Need advice |
cflowbelow is fine if you have dynamic control concerns such as Foo.m1(String, String) calling a method in some other class which could end up calling Foo.m1(String,String,String). If you don't have to worry about that kind of pattern, a static guard !(within Foo) will also work.
Elizabeth
-----Original Message-----
From: Stefan Hanenberg [mailto:shanenbe@xxxxxxxxxxxxxxxxxxxxxxx]
Sent: January 15, 2004 10:45 AM
To: aspectj-users@xxxxxxxxxxx; ABuistov@xxxxxxxxxxx
Subject: Re: [aspectj-users] Need advice
Hi,
you can add a cflowbelow to the aspect:
aspect MyProblemAspect{
pointcut operationTracker(Foo foo): call ( * Foo.m1(..)) && target
(foo) && !cflowbelow(call ( * Foo.m1(String,String))) &&
!cflowbelow(call ( * Foo.m1(String,String,String)));
before(Foo foo): operationTracker(foo) {
System.out.println(foo.getXXX());
}
}
(the 2nd cflow below is just for preventing recursive calls in
m1(String,String,String))
- Stefan
Alexey Buistov wrote:
> Hello!
> I'm having the following:
>
> class Foo {
> public void m1(String a, String b){ m1(a,b,null); }
> public void m1(String a, String b, String c){
> System.out.println("123");
> }
> public String getXXX() {return "XXX";}
> }
>
> aspect MyProblemAspect{
> pointcut operationTracker(Foo foo): call ( * Foo.m1(..)) && target
> (foo);
>
> before(Foo foo): operationTracker(foo) {
> System.out.println(foo.getXXX());
> }
> }
>
> The output is:
> XXX
> XXX
> 123
>
> The question is:
> How do I modify MyProblemAspect in order to acheive the following behaviour:
>
> 1) 'before' advice executes ONLY ONCE when Foo.m1(String, String) is invoked
> 2) 'before' advice executes [once] when Foo.m1(String, String, String)
> is invoked
> 3) 'before' advice doesn't execute when Foo.m1(String, String, String)
> is invoked from Foo.m1(String, String)
>
> Thanks in advance
> Alexey
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