Hibernate version: 3.2.0 GA

Name and version of the database you are using: Oracle9


The background: application uses JPA with Hibernate underneath it for persistence. Now we dropped in JBPM with its pure Hibernate persistence. The goal is to query a tasklist (TaskInstance is a JBPM entity) and join our JPA entities inside that query, something like this:



the.package.TaskInstance is an entity managed by Hibernate, described in mapping files, all that kind of stuff. This is basically an extension of the JBPM TaskInstance.
Now the.domain.Customer is our own home grown domain entity persisted with JPA (Hibernate underneath). All its metadata is decribed in annotations, like this:



So what we do is we want to have both Hibernate and JPA entities in the same query. However as SessionFactoryImpl.checkNamedQueries() processes the query above it ends up with an exception complaining that 'the.domain.Customer is not mapped'. Customer class is there in the class path so in theory the metadata is available in the runtime. The question is: is it possible to make that metadata somehow available to the session factory parsing such a heterogeneous query? Is there an alternative way to make a cross query without duplicating Customer metadata (the one described in annotations) in the mapping files?

Thanks.

Found a solution -- drop *.hbm.xml mappings as <mapping-file/> inside persistence.xml and Hibernate JPA implementation will happily pick them up. After that a query involving entities from both Hibernate and JPA/Hibernate domain could be used from the Entity Manager.