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Java Enterprise Edition (EE)

Persistence


javax.persistence
Class Persistence

java.lang.Object
  javax.persistence.Persistence
public class Persistence
extends java.lang.Object

Bootstrap class that is used to obtain an EntityManagerFactory in Java SE environments.

The Persistence class is available in a Java EE container environment as well; however, support for the Java SE bootstrapping APIs is not required in container environments.

The Persistence class is used to obtain a PersistenceUtil instance in both Java EE and Java SE environments.

Since:
Java Persistence 1.0

Field Summary
static java.lang.String PERSISTENCE_PROVIDER
          Deprecated.  
protected static java.util.Set<PersistenceProvider> providers
          Deprecated.  
 
Constructor Summary
Persistence()
           
 
Method Summary
static EntityManagerFactory createEntityManagerFactory(java.lang.String persistenceUnitName)
          Create and return an EntityManagerFactory for the named persistence unit.
static EntityManagerFactory createEntityManagerFactory(java.lang.String persistenceUnitName, java.util.Map properties)
          Create and return an EntityManagerFactory for the named persistence unit using the given properties.
static PersistenceUtil getPersistenceUtil()
          Return the PersistenceUtil instance
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

PERSISTENCE_PROVIDER

@Deprecated
public static final java.lang.String PERSISTENCE_PROVIDER
Deprecated. 
This final String is deprecated and should be removed and is only here for TCK backward compatibility

Since:
Java Persistence 1.0
See Also:
Constant Field Values

providers

@Deprecated
protected static final java.util.Set<PersistenceProvider> providers
Deprecated. 
This instance variable is deprecated and should be removed and is only here for TCK backward compatibility

Since:
Java Persistence 1.0
Constructor Detail

Persistence

public Persistence()
Method Detail

createEntityManagerFactory

public static EntityManagerFactory createEntityManagerFactory(java.lang.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(java.lang.String persistenceUnitName,
                                                              java.util.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.

getPersistenceUtil

public static PersistenceUtil getPersistenceUtil()
Return the PersistenceUtil instance

Returns:
PersistenceUtil instance
Since:
Java Persistence 2.0


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