Using annotations, it's possible to use a custom ID generator:

@Id @GeneratedValue(generator="MyIDGenerator")
@GenericGenerator(name="MyIDGenerator", strategy = "com.foo.MyIDGenerator")
public String getId() {
}


Is it possible to do the same through configuration in orm.xml? I'd like to use JPA but keep the meta-data seperate from the code.

If this isn't possible, is it possible to use a combination of orm.xml and .hbm.xml files?

Thanks.

Scott

Hi Scott,

I don't think that orm.xml will work. GenericGenerator is a Hibernate extension with no equivalent in JPA annotations or orm.xml.

You should be able to add a .hbm.xml file adding something like this to the mapping file for your class:



I haven't really tried this and even if it works I wouldn't recommend this approach since it is spreading configuration information all over the place. You want to use annotation, maybe orm.xml and hbm.xml mapping files. For a developer it will become very hard to understand the configuration as a whole.

Do you have a specific reason why you want to extract parts of the configuration data?

--Hardy