How to get real persistent class from a CGLIB proxy.

jc7442 · **Posted:** Wed May 31, 2006 6:39 am

I use EJB3 API.

In a method I receive a Class (not an instance), this class is in fact a proxy class. I need to get the real class (not hte proxy one).

If I writte the classname I have :
class mypackage.ResultPE$$EnhancerByCGLIB$$60a98730

I like to have just
class mypackage.ResultPE

If I had an instance I could use:
HibernateProxyHelper.getClassWithoutInitializingProxy(srcObject)

Unfortunatelly I have only the class.

Any idea on what's available in the API the get the Class from the proxy Class ?

jc7442 · **Posted:** Wed May 31, 2006 7:59 am

It seems that CGLIB enhaced class extends real class. Consequently I can get the real class using clazz.getSuperClass().

How is it possible to know if a class is a real class or an enhanced class ?

mheath · **Joined:** Tue Mar 01, 2005 6:58 pm **Posts:** 7

I have not tested this, but it seams like you could do something like:

Code:

class MyEntity {
  ...
  Class getBaseClass() {
    if (MyEntity.class.equals(getClass()) {
      return getClass();
    } else {
      return getClass().getSuperClass();
    }
  }
}

jc7442 · **Posted:** Thu Jun 01, 2006 9:06 am

I do not want to impact all my persistent enties for such a hook.

I use another solution, I check if classname conatins "$$EnhancerByCGLIB$$". But I'm not happy with that.

max · **Posted:** Thu Jun 01, 2006 2:46 pm

mheath's suggestion is more "portable" than checking for $$EnhancerByCGLIB$$ since the final ejb3 entitymanager will use Javaassist.

jc7442 · **Posted:** Tue Jun 06, 2006 3:29 am

I can not change all the persistent classes to add such a method. I need to find a solution that does not impact persistent entities.