Re: [aspectj-users] Customized annotations @AspectJ vs AspectJ

[Wim Deblauwe <wim.deblauwe@xxxxxxxxx>]

You need to set the retention policy on your annotations: http://www.java2s.com/Tutorial/Java/0020__Language/SpecifyingaRetentionPolicy.htm

regards,

Wim

2009/5/11 Villazón Alex <alex.villazon@xxxxxxxxxxx>

Hi,
 We want to use annotations for advices and methods defined in the aspect. We need to post process the compiled aspect. Therefore, we need that the compiler keeps user-defined annotations.

I tried to add annotations with standard AspectJ, and it seems that the compiler keeps them. At least, the bytecode shows 1 annotation for doiIt() and 2 annotations for ajc$before...(). I guess AspectJ already makes use of annotations for advices...(??)

import java.lang.annotation.*;
@Target(ElementType.METHOD)
   public @interface Test_Target {
       public String doTestTarget();
   }

 import java.lang.annotation.*;
aspect Foo {
  @Test_Target(doTestTarget="a method")
   public void doIt() {
       System.out.print("do it");
   }

   @Test_Target(doTestTarget="an advice")
   before() : call(* *.*(..)) && !within(Foo) {
       System.out.println(thisJoinPoint);
       doIt();
   }
}


Then, I tried @AspectJ, and I think my annotations were removed by the compiler... The compiled bytecode of the aspect has exactly the same annotation entries (RuntimeVisibleAnnotation) with or without my annotations.

import org.aspectj.lang.annotation.*;
import org.aspectj.lang.*;
@Aspect
   public class Foo {

       @Pointcut("call(* *.*(..)) && !within(Foo)")
           void anyCall() {}

          @Test_Target(doTestTarget="a method") // removed??
           public void doIt() {
               System.out.println("doIt");
       }

       @Test_Target(doTestTarget="an advice") // removed???
       @Before("anyCall()")
           public void beforeAnyCall(JoinPoint jp) {
           System.out.println(jp);
           doIt();
       }
   }

Is there a way to make ajc to keep user-redined annotations with @AspectJ ? Did I wrongly used my annotations? or should I keep using AspectJ, instead of @AspectJ ?


Many thanks,

Alex


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