Re: about PointCut selection and Context Parameter

Hi shiyiying.

1. Your suggestion of being able to change the parameters is a good idea. I=
t will be very simple to add and I will add it until the next release.=20

2. I have not had the time to document this feature yet but  basically it w=
orks like this:
add javadoc tags to your code like:=20
/**
 * attributes:method log
 */

and then set the advice to apply at all the places where you have the log a=
ttribute by specifying:
<advice ... attribute=3D"log"/>

Take a look in the logging example to see it in action.

3. Actually the FieldAdvices are Pre and Post advices. You really don't hav=
e to call proceed(); (doesn't do anything in this case). I understand tha=
t I have not been so clear on this and I will change it to be more explic=
it until the next release.

Thanks for your interest and for trying aspectwerkz out.

Sincerely, Jonas=20

-----Original Message-----
From: =11=E1 <[email protected]>
To: [email protected]
Date: Sat, 19 Apr 2003 04:55:28 +0000=20
Subject: [aspectwerkz-developer] about PointCut selection and Context Param=
eter

Hi Jonas:

Aspectwerkz seems very different from other's aop frameworks. I think it is=
=20
"practical" AspectJ.
But I have some questions:
1.In AspectJ, you can select a PointCut by combine some conditions,and can=
=20
provide some parameters, such as:

pointcut setXY(FigureElement fe, int x, int y):
   call(void FigureElement.setXY(int, int))=20
   && target(fe)=20
   && args(x, y);

around(FigureElement fe, int x, int y): setXY(fe, x, y) {
   System.out.println(fe + " moved to (" + x + ", " + y + ").");
   x++;
   proceed(fe,x,y);
}

in this around advice, we can change x's value , and proceed to next=20
advice(or org method) with the new parameter.
But in Aspectwerk,jointpoint proceed() has no parameter.Is it means we=20
cannot change parameter like AspectJ?

2.How can I select PointCut by attribute(and combine with others)?
3.Would Aspectwerkz implement PreAdvice,PostAdvice and Around advice like=
=20
AspectJ?
Now in Aspectwerkz,every advice is around advice.
For example, can we just declare a PreAdvice in XML, and in this advice 
class's execute method, we can just do our aspect thing,and need not to 
invoke proceed method?
Best regards
shiyiying

_________________________________________________________________
=AB(=16L
=00'=845P=AE=F6=FB=DF=15 MSN Hotmail=02  http://www.hotmail.com  



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