How do I resolve annotations?

[dxbcto]

I am re-doing one of the examles in AOP 1.3.1 to use annotations as opposed to meta data. Here is how my annotation is defined:

public @interface billable
{
 int amount() default 0;
}

I have a BillingInterceptor as in the example. When I do this in the interceptor's invoke method, b is always returns null:

billable b = (billable)invocation.getAdvisor().resolveAnnotation(billable.class);

Also....the annotations map is always empty. I appreciate any help. Thanks.

[dxbcto]

Ok....I forgot to annotate my billable interface with a proper retention policy. The new billable interface (that now works) looks like this:

@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.METHOD)
public @interface billable
{
 int amount() default 0;
}

Thanks.