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

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EntityManager em = emf.createEntityManager();
 
EntityManager em = emf.createEntityManager();
 
</pre></code>
 
</pre></code>
 +
 +
== Customizing Persistence Unit using Java ==
 +
 +
When a simple persistence unit configuration is defined which relies on container deployment:
 +
 +
<pre>
 +
<persistence-unit name="employee" transaction-type="RESOURCE_LOCAL">
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<non-jta-data-source>jdbc/MyDS</non-jta-data-source>
 +
</persistence-unit>
 +
</pre>
 +
 +
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:
 +
 +
<pre>
 +
import static org.eclipse.persistence.jpa.config.PersistenceUnitProperties.*;
 +
 +
...
 +
 +
Map properties = new HashMap();
 +
 +
// Ensure RESOURCE_LOCAL transactions is used.
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properties.put(TRANSACTION_TYPE,
 +
PersistenceUnitTransactionType.RESOURCE_LOCAL.name());
 +
 +
// Configure the internal EclipseLink connection pool
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properties.put(JDBC_DRIVER, "oracle.jdbc.OracleDriver");
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properties.put(JDBC_URL, "jdbc:oracle:thin:@localhost:1521:ORCL");
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properties.put(JDBC_USER, "scott");
 +
properties.put(JDBC_PASSWORD, "tiger");
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properties.put(JDBC_READ_CONNECTIONS_MIN, "1");
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properties.put(JDBC_WRITE_CONNECTIONS_MIN, "1");
 +
 +
// Configure logging. FINE ensures all SQL is shown
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properties.put(LOGGING_LEVEL, "FINE");
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properties.put(LOGGING_TIMESTAMP, "false");
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properties.put(LOGGING_THREAD, "false");
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properties.put(LOGGING_SESSION, "false");
 +
 +
// Ensure that no server-platform is configured
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properties.put(TARGET_SERVER, TargetServer.None);
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</pre>
 +
 +
Now the PU can be instantiated for testing using:
 +
 +
<pre>
 +
Persistence.createEntityManagerFactory(unitName, properties);
 +
</pre>

Revision as of 21:21, 28 March 2008

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();

Customizing Persistence Unit using Java

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

	<persistence-unit name="employee" transaction-type="RESOURCE_LOCAL">
		<non-jta-data-source>jdbc/MyDS</non-jta-data-source>
	</persistence-unit>

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.
		properties.put(TRANSACTION_TYPE,
				PersistenceUnitTransactionType.RESOURCE_LOCAL.name());

		// 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);