[jboss-user] [Persistence, JBoss/CMP, Hibernate, Database] - Persistence Problem with Jboss 4.0.3, Hibernate

[darretta]

I'm a persistence/EJB 3 newbie having difficulties initializing my EntityManagerFactory. The error I'm getting is the infamous "No Persistence provider for Entity Manager "....

Here is my setup:

* JBoss 4.0.3SP1

* PostgreSQL 8.2.4

* Hibernate persistence

* Deployed EAR:
vram.ear
  |   |
  |   -- vram-ejbs.jar
  |        |
  |        -- hibernate.properties
  |        -- META-INF/persistence.xml

* persistence.xml
<persistence xmlns="http://java.sun.com/xml/ns/persistence" version="1.0">
  |      <persistence-unit name="vramPu">
  |          <provider>org.hibernate.ejb.HibernatePersistence</provider>
  |          <jta-data-source>java:/nicweb/DataSource</jta-data-source>
  |      </persistence-unit>
  |       <properties>
  |          <property name="hibernate.dialect" value="org.hibernate.dialect.PostgreSQLDialect"/>
  |          <property name="hibernate.show_sql" value="true"/>
  |       </properties>
  | </persistence>

* hibernate.properties
hibernate.dialect org.hibernate.dialect.PostgreSQLDialect
hibernate.connection.driver_class org.postgresql.Driver
hibernate.connection.url jdbc:postgresql://localhost/nicweb
hibernate.connection.username nicweb-admin
hibernate.connection.password nicweb-admin

* EJB Stateless Session Bean
@Stateless
  | public class MyClass implements MyClassRemote {
  | 
  |     @PersistenceContext
  |     private EntityManager em;
  | 
  |     @PersistenceUnit
  |     private EntityManagerFactor emf;
  | 
  |     ...
  | 
  |     /* Error thrown at this call... */
  |     emf = Persistence.createEntityManagerFactory("vramPu");
  |     em = emf.createEntityManager();


I think the Persistence API is able to locate the persistence.xml file, and the hibernate.properties is loaded (but not sure if needed).

Any help is greatly appreciated.

Regards,
Mike




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