Hibernate - derived java classes for tables

I generated mapping files and POJOs in Netbeans instead of writing them myself. Is it possible to use a derived class in a place of an inherited class? An example would be something like this:

Person.hbm.xml - mapping file

Person.java - generated class (strategy class per table)

PersonExtended - class that extends Person.java

So when I create a new object:

PersonExtended personextended = new PersonExtended(<parameters>);

Would I be able to call methods like:

session.save(personextended) or session.delete(personextended)

?

Is this scenario sensible or should I add any code that I need to in a generated class? Thanks in advance for help or suggestions.

-------Edit--------

In my database I don't have the typical structure that would be possible to be mapped as an inheritance. I merely want to keep the additional methods开发者_运维技巧 separate from the main java class for an entity.

Best Regards, sass.

you will have to tell hibernate how your extended classes should be mapped via a the hbm.xml file. Depending on the strategy Hibernate should use for polymorphism you might have to assign a descriminator value. there are 3 different strategies when using subclasses known as "table per class" "table per concrete class" and "table per subclass".

You can define subclasses in the hbm-xml file by using the <subclass> or <joined-subclass> elements

if you correctly defined your hbm.xml file you can then use session.save(new PersonExtended()) or sth.

you can read up on this here: http://docs.jboss.org/hibernate/core/3.3/reference/en/html/inheritance.html

hope that helped..