Do you have a common base class for Hibernate entities?

Question

Do you have a common base class for Hibernate entities, i.e. a MappedSuperclass with id, version and other common properties? Are there any drawbacks?

Example:

Answer 1

I wouldn't hesitate to use a common base class, after all that's the point of O/R mapping.

I use common base classes, too, but only if the entities share at least some common properties. I won't use it, if the ID is the only common property. Until now I did not encounter any problems.