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Difference between revisions of "EclipseLink/Examples/JPA/OutsideContainer"

(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();
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== 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();
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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 09:16, 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.