com.easycodebox.common.jpa

类 Persistence

java.lang.Object

com.easycodebox.common.jpa.Persistence

public class Persistence
extends Object

Bootstrap class that is used to obtain an EntityManagerFactory.

从以下版本开始:

Java Persistence 1.0

字段概要

字段

限定符和类型	字段和说明
static String	PERSISTENCE_PROVIDER
protected static Set<PersistenceProvider>	providers

构造器概要

构造器

构造器和说明
Persistence()

方法概要

限定符和类型	方法和说明
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.

从类继承的方法 java.lang.Object

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

字段详细资料

PERSISTENCE_PROVIDER

public static String PERSISTENCE_PROVIDER

providers

protected static final Set<PersistenceProvider> providers

构造器详细资料

Persistence

public Persistence()

方法详细资料

createEntityManagerFactory

public static EntityManagerFactory createEntityManagerFactory(String persistenceUnitName)

Create and return an EntityManagerFactory for the named persistence unit.

参数:

persistenceUnitName - The name of the persistence unit

返回:

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.

参数:

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.

返回:

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