Re: [aspectj-dev] Array access

[Matthew Webster <matthew_webster@xxxxxxxxxx>]

Christian,

You can advise array constructions (https://bugs.eclipse.org/bugs/show_bug.cgi?id=77166)
and access. Unfortunately you cannot (yet) determine the index used when
access and array or the identity of the element. In the example below the
object traced is the array itself:

public
class
Test {

        private
static
int[]
ints;
        
        public
static
void
main(String[] args) {
         
      ints
= new
int[1];
         
      ints[0]
= 999;
         
      System.out.println("Test.main()
ints[0]=" + ints);
        }

}

public
aspect
Aspect {

        after()
returning(Object
ret): call(int[].new(..))
{
         
      System.out.println("Aspect.afterReturning()
" + thisJoinPoint
+ ", ret="
+ ret);
        }
        
        before
(Object arg) : set(int[]
*) && args(arg){
         
      System.out.println("Aspect.before()
" + thisJoinPoint
+ ", arg="
+ arg);
        }

        after
() returning(Object
ret) : get(int[]
*) {
         
      System.out.println("Aspect.after()
" + thisJoinPoint
+ ", ret="
+ ret);
        }
}

Matthew Webster
AOSD Project
Java Technology Centre, MP146
IBM Hursley Park, Winchester,  SO21 2JN, England
Telephone: +44 196 2816139 (external) 246139 (internal) 
Email: Matthew Webster/UK/IBM @ IBMGB, matthew_webster@xxxxxxxxxx
http://w3.hursley.ibm.com/~websterm/

"Wes" <wes@xxxxxxxxxxxxxx>
Sent by: aspectj-dev-bounces@xxxxxxxxxxx

11/09/2006 21:12

Please respond to
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cc
Subject	Re: [aspectj-dev] Array access

This sounds like it should be an AspectJ enhancement
request (if it isn't already):

  http://dev.eclipse.org/bugs/enter_bug.cgi?product=AspectJ

(Though I'm not sure where you're going with static/dynamic)

Wes

> ------------Original Message------------
> From: Christian Hammer <chammer@xxxxxxxxxx>
> To: aspectj-dev@xxxxxxxxxxx
> Date: Mon, Sep-11-2006 12:07 PM
> Subject: [aspectj-dev] Array access
>
> 
> There has been some discussion on the semantics of the get/set 
> pointcuts
> for access to an array cell. Currently, there is no differnence in
the
> static/dynamic part of thisJoinPoint between a read and a write to
an 
> array
> cell as described in
> http://dev.eclipse.org/mhonarc/lists/aspectj-users/msg02975.html
> 
> I'm currently implementing a tracer with AspectJ, but it requires
to be
> able to distinguish these two cases. It doesn't matter if they are
both
> treated as get joinpoints, as long as the information is present.
Would 
> it
> be possible to enrich the JoinPoint information?
> 
> -Chris
> 
> _______________________________________________
> aspectj-dev mailing list
> aspectj-dev@xxxxxxxxxxx
> https://dev.eclipse.org/mailman/listinfo/aspectj-dev
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