javax.persistence
Class Persistence

java.lang.Object
  javax.persistence.Persistence

public class Persistence
extends Object

Bootstrap class that is used to obtain an EntityManagerFactory.

Since:

EJB 3.0 version.

Author:

Florent Benoit

See Also:

EJB 3.0 specification

Field Summary

static String	PERSISTENCE_PROVIDER Persistence Provider property with a typo for its value !
protected static Set<PersistenceProvider>	providers Set of persistence providers.

Constructor Summary

Persistence()

Method Summary

static EntityManagerFactory	createEntityManagerFactory(String persistenceUnitName) Create and return an EntityManagerFactory for the named persistence unit.
static EntityManagerFactory	createEntityManagerFactory(String persistenceUnitName, Map properties) Create and return an EntityManagerFactory for the named persistence unit using the given properties.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

PERSISTENCE_PROVIDER

public static final String PERSISTENCE_PROVIDER

Persistence Provider property with a typo for its value !

See Also:

Constant Field Values

providers

protected static final Set<PersistenceProvider> providers

Set of persistence providers.

Constructor Detail

Persistence

public Persistence()

Method Detail

createEntityManagerFactory

public static EntityManagerFactory createEntityManagerFactory(String persistenceUnitName)

Create and return an EntityManagerFactory for the named persistence unit.

Parameters:

persistenceUnitName - The name of the persistence unit

Returns:

The factory that creates EntityManagers configured according to the specified persistence unit

createEntityManagerFactory

public static EntityManagerFactory createEntityManagerFactory(String persistenceUnitName,
                                                              Map properties)

Create and return an EntityManagerFactory for the named persistence unit using the given properties.

Parameters:

persistenceUnitName - The name of the persistence unit

properties - Additional properties to use when creating the factory. The values of these properties override any values that may have been configured elsewhere.

Returns:

The factory that creates EntityManagers configured according to the specified persistence unit.