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Difference between revisions of "EclipseLink/Examples/JPA/OutsideContainer"
< EclipseLink | Examples | JPA
(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>...) |
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EntityManagerFactory emf = org.eclipse.persistence.jpa.JpaHelper.createEntityManagerFactory(serverSession); | EntityManagerFactory emf = org.eclipse.persistence.jpa.JpaHelper.createEntityManagerFactory(serverSession); | ||
EntityManager em = emf.createEntityManager(); | EntityManager em = emf.createEntityManager(); | ||
| − | </pre><code> | + | </pre></code> |
== Using a sessions.xml file == | == Using a sessions.xml file == | ||
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EntityManagerFactory emf = org.eclipse.persistence.jpa.JpaHelper.createEntityManagerFactory(sessionName); | EntityManagerFactory emf = org.eclipse.persistence.jpa.JpaHelper.createEntityManagerFactory(sessionName); | ||
EntityManager em = emf.createEntityManager(); | EntityManager em = emf.createEntityManager(); | ||
| − | </pre><code> | + | </pre></code> |
Or you may use an EntityManager from a persistence.xml file. | Or you may use an EntityManager from a persistence.xml file. | ||
Revision as of 10:16, 15 October 2007
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();
Using a sessions.xml file
EntityManagerFactory emf = org.eclipse.persistence.jpa.JpaHelper.createEntityManagerFactory(sessionName);
EntityManager em = emf.createEntityManager();
Or you may use an EntityManager from a persistence.xml file.
Using a persistence unit name
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.