How can I map eg.Name subclasses? for example:
public ShortName extends Name
{
private String shortName;
...
}

Thanks for your time

Hibernate version:
2.1.6
Mapping documents:
<class name="eg.Person" table="person">
<id name="Key" column="pid" type="string">
<generator class="uuid.hex"/>
</id>
<property name="birthday" type="date"/>
<component name="Name" class="eg.Name"> <!-- class attribute optional -->
<property name="initial"/>
<property name="first"/>
<property name="last"/>
</component>
</class>

Change component Name to a class (in mapping) and add relation one to one instead of component. Than subclass the Name.

Lukasz

That's a solution, but I can't store the name and subclasses data in the same table, How can I do that?

I managed to map two classes, both of which inherit from a common base class, and one of which contains a List of the other, just by stepping through the example mappings at the end of the html manual.

For extending a class, make sure you define the base class first, then create your new mapping file with a <joined-class extends="ShortName" name="Name"> instead of the usual syntax. (I think - haven't got it in front of me for the moment.)

That can work, I'm think about to separate it to another table, actually my problem is http://forum.hibernate.org/viewtopic.php?t=935729&highlight=quiz but this topic could help me since it's easier to understand, thanks a lot.