Generated doctrine objects for specific tables

Possible duplicate:
Creating a single object from an existing database using symfony2 and the doctrine

I am working on porting an outdated enterprise application to Symfony2. When everything is done, we will have dozens of tables. Each application uses a subset of tables, and we want to save tables in 3 databases, and not in one database per Symfony package.

Is it possible to use doctrine command line tools to generate metadata and objects only for a subset of tables in a database? We would like to be able to generate / re-generate metadata as they are developed and modify the tables, but we do not want to generate information for all tables in db.