Java Persistence with Hibernate - Hibernate EntityManager (JPA)

JSR 220 - Java Persistence API
Hibernate EntityManager
Hibernate Gossip: Hibernate EntityManager

Hibernate Core, Annotations, EntityManager library
antlr.jar
asm-attrs.jar
asm.jar
cglib-2.1.3.jar
commons-collections-2.1.1.jar
commons-logging-1.0.4.jar
dom4j-1.6.1.jar
ejb3-persistence.jar
hibernate-annotations.jar
hibernate-commons-annotations.jar
hibernate-entitymanager.jar
hibernate3.jar
javassist.jar
jta.jar
...

Apache Derby JDBC driver
derby.jar

--Entity - Usr.java

@javax.persistence.Entity
public class Usr {  
  @javax.persistence.Id
  private int id;
  private String name;
  public Usr() {}
  public int getId() {return id;}
  public void setId(int id) {this.id = id;}
  public String getName() {return name;}
  public void setName(String name) {this.name = name;}
}

--META-INF/persistence.xml

<?xml version="1.0" encoding="UTF-8"?>
<persistence version="1.0" xmlns="http://java.sun.com/xml/ns/persistence">
  <persistence-unit name="HibernateEntityManager" transaction-type="RESOURCE_LOCAL">
    <provider>org.hibernate.ejb.HibernatePersistence</provider>
    <class>Usr</class>
    <properties>
      <property name="hibernate.connection.driver_class" value="org.apache.derby.jdbc.EmbeddedDriver"/> 
      <property name="hibernate.connection.url" value="jdbc:derby:testdb;create=true"/>  
      <property name="hibernate.connection.username" value="user"/> 
      <property name="hibernate.connection.password" value="password"/> 
      <property name="hibernate.hbm2ddl.auto" value="create"/>
      <property name="hibernate.show_sql" value="true"/>
      <property name="hibernate.format_sql" value="true"/>            
    </properties>
  </persistence-unit>
</persistence>

--Main class

import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Persistence;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

public class Main {
  private static Log log = LogFactory.getLog(Main.class);

  public static void main(String[] args) {
    EntityManagerFactory emf = Persistence
        .createEntityManagerFactory("HibernateEntityManager");
    try {
      EntityManager em = emf.createEntityManager();
      Usr user = new Usr();
      user.setId(1);
      user.setName("hello world");
      em.getTransaction().begin();
      try {
        em.merge(user);
        em.flush();
      } finally {
        em.getTransaction().commit();
      }
      log.info(em.find(Usr.class, 1).getName());
    } finally {
      emf.close();
    }
  }
}

/* Stdout
Hibernate: 
    select
        usr0_.id as id0_0_,
        usr0_.name as name0_0_ 
    from
        Usr usr0_ 
    where
        usr0_.id=?
Hibernate: 
    insert 
    into
        Usr
        (name, id) 
    values
        (?, ?)

... Main main
... hello world
*/