Hi all,

I have one bean (Menu) mapped twice in my hbm.xml using different entity-name:



I can easily RETRIVE information from both tables using such a syntax:

where boundary is a string "stage" or "public"

Here is my question...

Which is the right syntax to save an instance of Menu m, since the Exeception I get from Hibernate, when I execute

is, obviously, this:






ps:
I'm trying this awful thing but it reeeeeeallly sucks, since it's not Hibernate (and even it does not work):

Why are you having the same variable name for both entities

Because I have only ONE entity that is bound to both the tables, to the "stage" table and to the "public" one.

I do not need two entities since the Menu's properties are the same in both cases

I don't know the exact answer for you. But my thought is create a base class entity and derive two classes out of it. Do not put attributes in the derived class, in your hbm map the derived classes. This will help you in scalability point of view too. Suppose if the Menu changes tomorrow u can just add those attributes in the corresponding derived class. You should be good to go. Let me know if this helps

My solution has been taken directly from the reference at the chapter "Mapping a class more than once"... but the authors do not explain the full story there...

----- SOLUTION FOUND -----

Simply do this: