How to use Hibernate UserTypes in JPA?

Is it possible to use/regi开发者_开发百科ster a Hibernate UserType in a JPA project, where no annotations are used but the persistence mapping is done in a JPA orm.xml file?

Thanks in advance.

One possible solution I can see is to write mappings for the classes with properties of custom type using .hbm.xml syntax and then add them to persistence.xml with <mapping-file> - Hibernate supports it, but I'm not sure how it would play with other classes mapped in orm.xml.