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import java.lang.annotation.*;
@Retention(RetentionPolicy.RUNTIME) @interface Ann {String value();}
aspect Aspect {
// Methods with out the Ann annotation but in an Ann annotated type get Ann
// declare @method: !@Ann * (@Ann *).*(..) : @Ann("introduced");
// Call to an annotated method
pointcut annotated(Ann b) : call(@Ann * *(..)) && @annotation(b);
// Top level call to an annotated method
pointcut annotatedTop(Ann b) : annotated(b) && !cflowbelow(annotated(Ann));
// Non top level call
pointcut annotatedNotTop(Ann b, Ann bTopo) :
annotated(b) && cflowbelow(annotatedTop(bTopo));
before(Ann b, Ann bTopo) :
annotatedNotTop(b, bTopo) {
System.out.println("Non-top:");
System.out.println("\tJoin point: " + thisJoinPointStaticPart);
System.out.println("\tEnclosing join point: " + thisEnclosingJoinPointStaticPart);
System.out.println("\tAnn: " + b);
System.out.println("\tTop annotation: " + bTopo);
}
// before(Ann b) :
// annotatedTop(b) {
// System.out.println("Top:");
// System.out.println("\tJoin point: " + thisJoinPointStaticPart);
// System.out.println("\tEnclosing join point: " +
//thisEnclosingJoinPointStaticPart);
// System.out.println("\tAnn: " + b);
// }
// declare @method: !@Ann * (@Ann *).*(..) : @Ann("introduced");
declare @method: * B.goo() : @Ann("introduced");
}
public class A {
@Ann("A.foo") void foo() { new B().foo(); new B().goo();}
public static void main(String[] args) { new A().foo(); }
}
@Ann("B") class B {
// The Ann is injected here!
@Ann("B.foo")
void foo() { }
void goo() { }
}
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