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Difference between revisions of "EclipseLink/Examples/JPA/NativeMetadata"
< EclipseLink | Examples | JPA
| Line 18: | Line 18: | ||
</source> | </source> | ||
| − | or through the use of persistence unit properties: | + | or through the use of persistence unit properties in your persistence.xml: |
| − | + | <source lang="xml"> | |
| − | + | <persistence xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence persistence_1_0.xsd" version="1.0"> | |
| − | + | <persistence-unit name="my-app" transaction-type="RESOURCE_LOCAL"> | |
| + | <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider> | ||
| + | <properties> | ||
| + | <property name="eclipselink.sessions-xml" value="org/my-app/persistence/sessions.xml"/> | ||
| + | <property name="eclipselink.session-name" value="my-app"/> | ||
| + | </properties> | ||
| + | </persistence-unit> | ||
| + | </persistence> | ||
| + | </source> | ||
Revision as of 12:02, 26 November 2009
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
If you want to use EclipseLink or Oracle TopLink's native XML metadata within EclipseLink JPA this can be accomplished using API:
EntityManagerFactory emf = org.eclipse.persistence.jpa.JpaHelper.createEntityManagerFactory(sessionName); EntityManager em = emf.createEntityManager();
or through the use of persistence unit properties in your persistence.xml:
<persistence xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence persistence_1_0.xsd" version="1.0"> <persistence-unit name="my-app" transaction-type="RESOURCE_LOCAL"> <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider> <properties> <property name="eclipselink.sessions-xml" value="org/my-app/persistence/sessions.xml"/> <property name="eclipselink.session-name" value="my-app"/> </properties> </persistence-unit> </persistence>