Retain annotations on CGLIB proxies?

Question

Am trying to create an object using an AOP framework which uses CGLIB to create proxy objects. Strangely enough, the \"enhanced\" proxy object is devoid of ANY annotations t

Answer 1

Cglib is not capable of retaining annotations without changing its internal implementation. This is however quite complicated and believe me I tried. My altered version I finally came up with was however so complicated that I decided to rather implement Byte Buddy, another code generation library which is capable of such functionality.

Here is an example of how you can create subclass that

@Retention(RetentionPolicy.RUNTIME)
@interface MyAnnotation { }

@MyAnnotation
class MyClass { }

assertThat(new ByteBuddy()
  .subclass(Object.class)
  .attribute(TypeAttributeAppender.ForSuperType.INSTANCE)
  .make()
  .load(getClass().getClassLoader(), ClassLoadingStrategy.Default.WRAPPER)
  .getLoaded()
  .isAnnotationPresent(MyAnnotation.class), is(true));

Byte Buddy comes with an extensive full-text documentation and javadoc and it is quite extensible. Hope you make good use of the library.