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[aspectj-dev] RE: [aspectj-users] Re: Why is 'if' pointcut restricted to static members of aspect?
|
Good answer. Perhaps you could add it to the programming guide?
Mik
> -----Original Message-----
> From: aspectj-users-admin@xxxxxxxxxxx [mailto:aspectj-users-
> admin@xxxxxxxxxxx] On Behalf Of Matthew Webster
> Sent: Thursday, March 25, 2004 4:44 PM
> To: aspectj-users@xxxxxxxxxxx
> Subject: [aspectj-users] Re: Why is 'if' pointcut restricted to static
> members of aspect?
>
>
>
>
>
> An "if()" poincut can only make references to static fields and methods
> because it executes outside the context of an aspect instance. However you
> can always use the "aspectOf()" method:
>
> public aspect Aspect {
>
> pointcut testIf () :
> execution(* main(..)) && if(Aspect.aspectOf().isEnabled());
>
> before () : testIf () {
> System.err.println(thisJoinPointStaticPart);
> }
>
> private boolean enabled = true;
>
> public boolean isEnabled () {
> return enabled;
> }
> }
>
> 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/
>
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