I need to extend a class A with a few attributes in a separate table, so I chose the joined-subclass model. Let say I have a basic application managing Table A and class A and additionnal modules. The basic application is the one creating objects and additionnal modules add attributes if and when needed.

So if table A contains an entry with a key "1" and if I want to add attribute in module B, can I just do the folowing ?


add attributes to b and then



if not how would I do it?

Philippe



Hibernate version:
Hibernate version 3.1
Mapping documents:

Code between sessionFactory.openSession() and session.close():

Full stack trace of any exception that occurs:

Name and version of the database you are using:

The generated SQL (show_sql=true):

Debug level Hibernate log excerpt:

I tried and it does not work.

Hibernate is either generating two INSERT statements (table A and table AB) or two UPDATE statements where in fact I need an UPDATE on table A and a CREATE on table AB.

is there a way to obtain this extension mecanism?