hi,
i am new to hibernate. i have a query.

i have the following class heirarchy

Interface A
Class B implements A

Class C extends B
Class D extends B
Class E extends B

Class F extends C

What will be the mapping for this if i were to use table per class hierarchy


Thanks in advance

i forgot to mention that class B is an abstract class.


Thanks

what i wanted to know was that we do not store the state of C in the data store. so should my mapping be

<hibernate-mapping>
<class name="B" ..... >
<discriminator column = ......>

<subclass name ="C" discriminator-value="C" >
<subclass name = "F" discriminator-value="F" >
....
</subclass>
<subclass>
</class>
</hibernate-mapping>

OR

<hibernate-mapping>
<class name="B" ..... >
<discriminator column = ......>

<subclass name = "F" discriminator-value="F" >
....
</subclass>
</class>
</hibernate-mapping>

can i directly say omitting the subclass C as its state is not being saved. Class C only has some behavior and no state. do i have to maintain exact hiearchy in my mapping. will hibernate work properly in the second case.
How does hibernate work internally. can anyone point me to some document which mentions internal functioning of hibernate.


Thanks in advance

if C won´t be persisted, the second mapping excerpt is right.

You only declares the classes that will have some state info saved in a datastore in your Relational Model (remember, Hibernate is a object-relational framework).

So, when you work in a hibernate session block, you will save, update, delete or query the objects whose classes you mapped.

Thanks for the reply.. i was a bit confused. just wanted to know whether hibernate allows to do it..

Thanks again.