1 2 Previous Next 25 Replies Latest reply on Apr 3, 2007 8:30 AM by kabirkhan

    Inteception on field inherited through generic superclass

    dunks80
    dunks80 Jan 9, 2007 11:38 AM

      JBoss 4.0.5.GA
      JBoss AOP 1.5.2.GA load time weaving
      Java HotSpot(TM) 64-Bit Server VM (build 1.6.0-b105, mixed mode)

      I'm seeing the following unexpected behavior

      public abstract class A
{
 @MyFieldAnnotation
 protected Object myField;
...
}


public abstract class B<Z> extends A
{
...
}

public class C extends B<Y>
{
...
}

@InterceptorDef(scope = Scope.PER_VM)
@Bind(pointcut = "get(* *->@MyFieldAnnotation)")
public class MyFieldInterceptor implements Interceptor
{
...
}


      When i try to call myField on an instance of C from within a method in C my interceptor is not run. However if I duplicate the annotated field in class B like this... 


      public abstract class A
{
 @MyFieldAnnotation
 protected Object myField;
...
}


public abstract class B<Z> extends A
{
 @MyFieldAnnotation
 protected Object myField;
...
}


      ...then the interceptor works when calling myField from an instance of C. I'm guess that since B is generic some sort of erasure of the annotation is happening. As a work around in the meantime I've just duplicated the annotated field. I just wanted to know whether this issue was known to the developers (if not I'll post it to jira) and whether or not there was some way to get this working without the need to duplicate that field.


      Thanks

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