JPA - Is there a way/method to retrieve Persistence Unit information?

Java.sql. Connection connection = em. Unwrap(java.sql.Connection.

Class); Should work, what version are you using? Ensure that a transaction is active. To get the data source name you should be able to use, ((JNDIConnector)em.

Unwrap(JpaEntityManager. Class).getSession().getLogin().getConnector()).getName().

Here's what I've found helpful: private DataSource createDataSource() { ClientDataSource dataSource = new ClientDataSource(); dataSource. SetServerName("localhost"); dataSource. SetPortNumber(1527); dataSource.

SetDatabaseName("sample"); dataSource. SetUser("app"); dataSource. SetPassword("app"); return dataSource; } private EntityManagerFactory getEntityManagerFactory() { if (emf == null) { Map properties = new HashMap(); properties .

Put(PersistenceUnitProperties. NON_JTA_DATASOURCE,createDataSource()); emf = Persistence. CreateEntityManagerFactory(PU_NAME, properties); } return emf; } Can you create your datasource in the code, rather than configure via persistence.

Xml?

Thanks Kyle. I already created a persistence.xml. Is there a method something like: getEntityManger().

GetDataSourceName() in JPA/Eclipselink api? – neo May 18 at 14:51.

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