How to perform a non-polymorphic HQL query in Hibernate?

Question

I\'m using Hibernate 3.1.1, and in particular, I\'m using HQL queries.

According to the documentation, Hibernate\'s queries are polymorphic:

A

Answer 1

The ORM mimics the Java Model: if an object is an instance of another type (if an instance of PersianCat is an instance of Cat also), any query on Cat will have to be polymorphic (imagine you querying a List and asking if the entries match instanceof Cat.

Even Bozho's solution is somewhat impure, since the 'class' column is supposedly opaque to your hibernate mapping, although I admit its a very good compromise. You can simply get the discriminator through the classe's simple name.

If you're comfy and are using table per class you can always do a native query to the Cat table to get the ids and then get the entries through hibernate.