Hibernate version:
2.1

Name and version of the database you are using:
Oracle9i


Is there a way to share data classes among different tables in hibernate? I have multiple tables that are named differently but have the same structure. I was wondering if there was a way to use the same data object for multiple tables?

I haven't actually done this, but from reading the docs I would have thought you could multiple configuration files for the same class and add and remove them from the Configuration. Or programatically change the configuration to point a class at a different table.

by the way, this is just a guess. I am sure one of the other more advanced users would have a moer difinitive answer.

Can you give a litle bit more information about your scenario? It depends whether this tables are in the same db and wheter you want to access them in the same session/transaction or in separate ones.

HTH
Ernst

You can configure multiple session factories (thus multiple sessions) with different mappings. This is not elegant solution, though.

In hibernate3 there are named-entities. You just map named entities to tables (not ordinary classes). But this is in alpha stage :(

Artur

In Hibernate3 there is (named entities), but in Hibernate 2.1, you would need to use multiple SessionFactory instances.

That makes sense. Thank You.

I think a good way is to create new table with one more field, copy data to this new table and create views for old applications using new enum field, it must be possible to do it without problems on Oracle, you can create partitions by this field to maintain index per partition too(it is known as transparent data model optimization ).