I'm not too strong with annotations, and have very little experience with them in Hibernate although they are used extensively in my current project. I have a situation where I need to change the Id Generator in a subclass.

All our persistent classes extend PersistentClass which has an id property defined thusly:



I now have a subclass (Interrogation) that requires that the oid be constructed from various bits of data. How can I specify that a custom Id Generator is to be used for this class? Will the custom generator have access to the object for which it is generating and Id?

I guess this can't be done?

I've tried a number of things, with no luck. I suppose I need to break the inheritance relationship between Interrogation and PersistentObject. I'll have to duplicate much of PersistentObject in Interrogation, but I will be able to specify that ids are assigned.

Is this the only solution to this problem? I'm not really pleased with it because of violating the DRY principle, and because breaking the inheritance relationship *could* have other implications that I just don't see at the moment.