How to generate JPA 2.0 metamodel?

Question

In the spirit of type safety associated with the CriteriaQuery JPA 2.0 also has an API to support Metamodel representation of entities. Is anyone aware of a fully functional implementation of this API (to generate the Metamodel... as opposed to creating the metamodel classes manually)? It would be awesome if someone also knows the steps for setting this up in Eclipse (I assume it's as simple as setting up an annotation processor, but you never know).

EDIT: Just stumbled across Hibernate JPA 2 Metamodel Generator . But the issue remains since I can't find any download links for the jar

Answer 1

Alright, found it

They hid it well...

The set-up is described on Hibernate's website

Answer 2

It would be awesome if someone also knows the steps for setting this up in Eclipse (I assume it's as simple as setting up an annotation processor, but you never know)

Yes it is. Here are the implementations and instructions for the various JPA 2.0 implementations:

EclipseLink

• org.eclipse.persistence.internal.jpa.modelgen.CanonicalModelProcessor
• http://wiki.eclipse.org/UserGuide/JPA/Using_the_Canonical_Model_Generator_(ELUG)

Hibernate

• org.hibernate.jpamodelgen.JPAMetaModelEntityProcessor
• http://relation.to/Bloggers/HibernateStaticMetamodelGeneratorAnnotationProcessor

OpenJPA

• org.apache.openjpa.persistence.meta.AnnotationProcessor6
• http://openjpa.apache.org/builds/latest/docs/manual/manual.html#d0e11094

DataNucleus

• org.datanucleus.jpa.JPACriteriaProcessor
• http://www.datanucleus.org/products/accessplatform_2_1/jpa/jpql_criteria_metamodel.html

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For Hibernate, the implementation is provided by hibernate-jpamodelgen-1.0.0.Final.jar

Answer 3

http://www.datanucleus.org/products/accessplatform_2_1/jpa/jpql_criteria_metamodel.html