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< EclipseLink‎ | Examples‎ | JPA
Revision as of 22:22, 28 March 2008 by (Talk | contribs) (Customizing Persistence Unit using Java)

Users may also use the EntityManager API outside the container by creating a EntityManagerFactory for a given persistence unit name and properties map (includes database information etc.)

EntityManagerFactory emf = Persistence.createEntityManagerFactory(persistenceUnitName, propertiesMap);
EntityManager em = emf.createEntityManager();

JavaSE Configuration using Property Map

When a simple persistence unit configuration is defined which relies on container deployment:

	<persistence-unit name="employee" transaction-type="RESOURCE_LOCAL">

In order to test this persistence unit outside of the container the JavaSE bootstrapping API must be used. the following code can be used to customize the configuration:

import static org.eclipse.persistence.jpa.config.PersistenceUnitProperties.*;


		Map properties = new HashMap();

		// Ensure RESOURCE_LOCAL transactions is used.

		// Configure the internal EclipseLink connection pool
		properties.put(JDBC_DRIVER, "oracle.jdbc.OracleDriver");
		properties.put(JDBC_URL, "jdbc:oracle:thin:@localhost:1521:ORCL");
		properties.put(JDBC_USER, "scott");
		properties.put(JDBC_PASSWORD, "tiger");
		properties.put(JDBC_READ_CONNECTIONS_MIN, "1");
		properties.put(JDBC_WRITE_CONNECTIONS_MIN, "1");

		// Configure logging. FINE ensures all SQL is shown
		properties.put(LOGGING_LEVEL, "FINE");
		properties.put(LOGGING_TIMESTAMP, "false");
		properties.put(LOGGING_THREAD, "false");
		properties.put(LOGGING_SESSION, "false");

		// Ensure that no server-platform is configured
		properties.put(TARGET_SERVER, TargetServer.None);

Now the PU can be instantiated for testing using:

		Persistence.createEntityManagerFactory(unitName, properties);

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