Hi,

is there an easy way to replace the default JPA1 implementation in JBossAS5 with the JPA2 implementation in Hibenate 3.5?

Thanks a lot,
Georges

The Hibernate 3.5 bundle contains the JPA2 IMPLEMENTATION.
You have indeed to replace the JPA SPECIFICATION (= the interfaces):
- remove ejb3-persistence.jar from classpath as it contains the old JPA1 specification
- add jpa-api-2.0-cr-1.jar into classpath as it contains candidate release1 of the new JPA2 specification
http://repository.jboss.org/maven2/org/hibernate/java-persistence/jpa-api/2.0-cr-1/jpa-api-2.0-cr-1.jar
(at the moment of writing this, final jpa-api-2.0 release still outstanding on repository)

Hi, it's what I did, but I have this error during the deployment (I use the 3.5.0 CR-1 version) :

ERROR [AbstractKernelController] Error installing to Start: name=persistence.unit:unitName=#xxxx-repository state=Create
java.lang.AbstractMethodError: org.jboss.jpa.deployment.PersistenceUnitInfoImpl.getValidationMode()Ljavax/persistence/ValidationMode;
at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:580)

Hm,

I suspect you have to use JBossAS-6.0.0 (at moment of writing, latest release is 6.0.0.Milestone1)
in order to be JPA2 compliant.