I'm sure there're alot of topics on this subject, but impossible to find them.

I have a many-to-one relation but I don't want to load the related object, I just want to retrieve it id. What's the property for?

Thank you in advance

Oolon

Just the property you specified in the mapping file for the id.

I have the same problem. Just to make sure you understand me consider this example:
I have a persistent class A

and b shall be lazy, because I don't need b very often.
In my application I want to retrieve a large list of objects of type A to print them. In this case I also want to print the id of b. Hibernate already knows about the id of b, but it's hidden in hibernate's wrapper class for B, called B_$$_javassist_3. Is there a way to get to this hidden id without accessing the database again? I mean calling a.getB().getId() would be possible but would entail unnecessary effort and would take very long in my case. I also know about the solution of using SQL or HQL queries not to retrieve the persistent A objects as objects but as list of properties. But IMO that's not very comfortable.

Any ideas how to get to the hidden id of an lazy property?
Thanks in advance.

OK, I'm sorry for my last post. It's as easy as it should be. You can just call a.getB().getId() and hibernate is not going the retrieve the whole object b.
I think in my first test I forgot the getId() and printed a.getB() which forced hibernated to query the database for b. -> My fault.

So, let's end this thread with the word SOLVED :)