[jboss-user] [Persistence, JBoss/CMP, Hibernate, Database] - Trouble Configuring a Persistence Unit

[jantzen]

Hi, I'm experimenting with the new Java Persistence API interface to Hibernate and running into problems rather fast.

My basic test class:


  | package datatier;
  | 
  | import javax.persistence.EntityManager;
  | import javax.persistence.EntityManagerFactory;
  | import javax.persistence.Persistence;
  | 
  | public class DataTierTest {
  | 
  |    public static void main(String[] args) {
  |       Object file = ClassLoader.getSystemClassLoader().getResource("META-INF/persistence.xml");
  |       System.out.println("FILE " + file);
  |       EntityManagerFactory emf = Persistence.createEntityManagerFactory("test");
  |       EntityManager manager = emf.createEntityManager();      
  |    }
  | 

My META-INF/persistence.xml

  | <?xml version="1.0" encoding="UTF-8"?>
  | <persistence xmlns="http://java.sun.com/xml/ns/persistence"
  |    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  |    xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd"
  |    version="1.0">
  |    <persistence-unit name="test" transaction-type="RESOURCE_LOCAL">
  |    <provider>org.hibernate.ejb.HibernatePersistence</provider>
  |         <properties>
  |         <property name="hibernate.hbm2ddl.auto" value="validate"/>
  |         <property name="hibernate.connection.driver_class" value="org.postgresql.Driver"/>
  |         <property name="hibernate.connection.password" value="password"/>
  |         <property name="hibernate.connection.url" value="jdbc:postgresql:TestDB"/>
  |         <property name="hibernate.connection.username" value="user"/>
  |         <property name="hibernate.dialect" value="org.hibernate.dialect.PostgreSQLDialect"/>
  |         <property name="hibernate.default_schema" value="authority"/> 
  |       </properties>
  |    </persistence-unit>
  | </persistence>
  | 

>From within Eclipse and as a Jar running from the command line, the above results in:

  | FILE file:/home/jantzen/eclipse/DataTier/bin/META-INF/persistence.xml
  | Exception in thread "main" javax.persistence.PersistenceException: No Persistence provider for EntityManager named test
  | 	at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:41)
  | 	at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:27)
  | 	at org.throbbing.datatier.DataTierTest.main(DataTierTest.java:13)
  | 

I've verified that META-INF is in the classpath (which the ClassLoader.getResource() call demonstrates as well), so I'm perplexed.  Something simple I'm missing probably.

Thanks.

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