Hello!!!.

I'm using Hibernate 3.0.2, MS SQL Database.

I'm trying to map inheritance... but i'm having lots of problems with the GENERATOR tag. Well.. the following code doesn't work!!:

<class name="admin.Persona">

<id name="id" column="id" type="integer">
<generator class="native"/>
</id>

<property name="Activo" column="Activo" not-null="true" type="boolean"/>

<union-subclass name="admin.Administrador" table="Administradores">
</union-subclass>
</class>



It seems that i'm unable to put the ID in the abtract class ("Persona is abstract"). Any idea ???? i'm getting an exception... and i don't know how to solve this!!!

Thanks *** A LOT *** !!!

i forgot something else...

Is it possible to map this??:

class A
class B extends A

class C extends B
class D extends A

Thanks :D

http://www.hibernate.org/ForumMailingli ... AskForHelp

Please read the above link.... and then include your mapping files, your code, and the stack trace of the exception you are recieving - as indicated.

If you would have posted the stack trace, everyone would have easily seen that it informs you that identity column key generation cannot be used with union-subclass (for extremely obvious reasons).

So, use a different strategy.