[jboss-user] [JBoss Seam] - Custom interceptors do not work with super classes

[Kragoth]

When creating my own interceptor I was hoping to have super class that all my classes could extend that would give them my interceptor.

However, the initInterceptors method in the SEAM Component.java does not scan superclasses for annotations.

So I have the following code.

My Annotation

  | package gekko.web.services;
  | 
  | import static java.lang.annotation.ElementType.TYPE;
  | import static java.lang.annotation.RetentionPolicy.RUNTIME;
  | 
  | import java.lang.annotation.Retention;
  | import java.lang.annotation.Target;
  | 
  | import org.jboss.seam.annotations.intercept.Interceptors;
  | 
  | @Target(TYPE)
  | @Retention(RUNTIME)
  | @Interceptors(GekkoSpringInjector.class)
  | public @interface SpringAutowirable {}
  | 

My Super class

  | package gekko.web.actionbean;
  | 
  | import gekko.web.services.SpringAutowirable;
  | 
  | @SpringAutowirable
  | public class AbstractSeamComponent {
  | 
  | }
  | 

And finally my sub-class

  | package gekko.web.actionbean.enquiry;
  | 
  | *imports stripped*
  | 
  | @Name("catSubcatEnquiry")
  | @Scope(PAGE)
  | public class CatSubcatEnquiry extends AbstractSeamComponent {
  | 
  | .....
  | 
  | }
  | 

If I use the extends Superclass the Interceptor never fires.

If I change this and make an interface like

  | package gekko.web.actionbean.enquiry;
  | 
  | import gekko.web.services.SpringAutowirable;
  | 
  | @SpringAutowirable
  | public interface TestInterface {
  | 
  | }
  | 

and use

  | @Name("catSubcatEnquiry")
  | @Scope(PAGE)
  | public class CatSubcatEnquiry implements TestInterface {
  | ...
  | }
  | 

That works fine.

If you have a look at the Spring AnnotationUtils.java you will find that in there findAnnotation method it does look in super classes.
As seen here.

  | public static <A extends Annotation> A findAnnotation(Method method, final Class<A> annotationType) {
  | 
  | 		if (!annotationType.isAnnotation()) {
  | 			throw new IllegalArgumentException(annotationType + " is not an annotation");
  | 		}
  | 		A annotation = getAnnotation(method, annotationType);
  | 		Class<?> cl = method.getDeclaringClass();
  | 		while (annotation == null) {
  | 			cl = cl.getSuperclass();
  | 			if (cl == null || cl.equals(Object.class)) {
  | 				break;
  | 			}
  | 			try {
  | 				method = cl.getDeclaredMethod(method.getName(), method.getParameterTypes());
  | 				annotation = getAnnotation(method, annotationType);
  | 			}
  | 			catch (final NoSuchMethodException ex) {
  | 				// We're done...
  | 			}
  | 		}
  | 		return annotation;
  | 	}
  | 

Is there a possiblity of making Seam behave the same way?

View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4118502#4118502

Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4118502