Suppose I have a base class, Cat, and two derived classes: DomesticCat and WildCat. I define proxy interfaces to these persistent classes in order to use lazy initialization: ICat, IDomesticCat and IWildCat.

Now when I query the base class, how can I find the most-derived class of the returned object?



Apparently instanceof doesn't work on proxy interfaces. Is there an alternative? Am I doing something wrong?

Thanks in advance,
Raph

Ummm this is sort of correct, except that find() never returns proxies, so perhaps your actual code is slightly different??

But yes, interface proxies do implement all derived interfaces. Either

(a) use a concrete proxy instead of the interface proxy
(b) call Hibernate.getClass()

In my case, some of the objects returned by this query may have already been loaded in the current session using load(). I noticed that only these objects were being proxied while the other ones were of the actual persistent class.



This is exactly what I was looking for. Thanks a million!!

Raph

Oh yeah, sure. You confused me with "this is true for all objects".