EntityManager.getReference returned object class

[ebu]

As far as i can guess from the spec getReference shuld return an instance of the Class passed to it as first param. Thus, having

public class A {
 private String name;
}

...

A a = em.getReference(A.class, key);

i suppose a.getClass().getDeclaredField("name") to return the appropriate field. But em returns me an instance of mypack.A$$EnhancerByCGLIB$$4f0ecd01 and further i can't find A's fields in it. Will this be fixed in the future releases or we should not expect real instances from getReference?

wbr, eugen.

[bill.burke]

AFAIK, Hibernate (the underlying persistence mechanisms) extends your persistence class so that it can "intercept" get/set methods to perform more efficient dirty checking and lazy loading.

So your best bet is:

a.getClass().getSuperclass().getDeclaredField("name");

[epbernard]

This might even fail if by chance the object was already in the session, since the actual A class will be returned.
Note this is compliant with the spec since mypack.A$$EnhancerByCGLIB$$4f0ecd01 is actually a subclass of A, thus a is an instance of A.

To do what you want, you can do Hibernate.getClass(a).getDeclaredField()