Exception in JPA (NoClassDefFoundError: org/hibernate/AnnotationException)

Question

Hi,
I´m having a serious problem when using JPA. I´m using Weblogic Server 10 and developing in Weblogic Workshop Studio. When I start the WLS in Workshop, all works fine, but when I use the "publish" over my WLS Server in Workshop because I change any class in the project (and I need to republish the project to send the changed class to WLS), the following error is reported when I try to use the JPA:
Caused by: javax.ejb.EJBTransactionRolledbackException: EJB Exception: : java.lang.NoClassDefFoundError: org/hibernate/AnnotationException
at org.hibernate.cfg.AnnotationConfiguration.secondPassCompile(AnnotationConfiguration.java:353)
at org.hibernate.cfg.Configuration.buildMappings(Configuration.java:1115)
at org.hibernate.ejb.Ejb3Configuration.buildMappings(Ejb3Configuration.java:1265)
at org.hibernate.ejb.EventListenerConfigurator.configure(EventListenerConfigurator.java:150)
at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:884)
at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:186)
Why the AnnotationException class is no more found after a publish in a started Weblogic Server ?
Thanks in advance,
Sergio Stateri Jr.
[email protected]

Answer 1

Sergio,
there are at least three implementation for JPA available: OpenJPA, TopLink, and Hibernate. The first two are or can easily installed in WLS. If you intend to use Hibernate as the persistence provider you should ensure that all libraries are in the class path of your application.
--olaf