Hi,

I have an application I would like deploy in 2 versions: standalone and serverbased.
The serverbased version is currently in production using PostgreSQL as backend. After some testing I found Apache Derby a good engine for the standalone application.

I would like to use one set of mappping.hbm.xml's for configuration.
Datatypes and Fieldnames work pretty good after a little work, but I am struggling with the id-generators.
PostgreSQL uses sequences which are not supported by Derby.
With <generator class="native"/> Derby uses a hilo table.

How can I manage these two configurations with only one set of mapping files?
- Is there a way to modify the meta information programmatically?
- Should I subclass "PersistentIdentifierGenerator" and so wrap the underlying mechanism?
- Or should I modify the xml-dom before configuration?

Thank you for any ideas and help.

Regards,

Alex

See 3.1. Programmatic configuration in

http://www.hibernate.org/hib_docs/v3/re ... ation.html