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EclipseLink/Examples/JPA/OutsideContainer
< EclipseLink | Examples | JPA
Revision as of 10:13, 15 October 2007 by Unnamed Poltroon (Talk) (New page: Users may also use the EntityManager API outside the container. You may use the org.eclipse.persistence.jpa.JpaHelper class to obtain an EntityManager. == Using a server session == <code>...)
Users may also use the EntityManager API outside the container. You may use the org.eclipse.persistence.jpa.JpaHelper class to obtain an EntityManager.
Using a server session
EntityManagerFactory emf = org.eclipse.persistence.jpa.JpaHelper.createEntityManagerFactory(serverSession);
EntityManager em = emf.createEntityManager();
<code>
Using a sessions.xml file
<code>
EntityManagerFactory emf = org.eclipse.persistence.jpa.JpaHelper.createEntityManagerFactory(sessionName);
EntityManager em = emf.createEntityManager();
<code>
Or you may use an EntityManager from a persistence.xml file.
Using a persistence unit name
<code>
EntityManagerFactory emf = Persistence.createEntityManagerFactory(persistenceUnitName, propertiesMap);
EntityManager em = create.getEntityManager();
Users will then need to specify the database properties in the propertiesMap and are resonsible for building their persistence.xml file and having it available on the classpath.