Persistence (Java EE 5 SDK)

Java

previous page next page

概述

软件包

类

树

已过时

索引

帮助

Java EE 5 SDK

深圳电信培训中心.徐海蛟老师.

上一个类 下一个类

框架 无框架

摘要: 嵌套 | 字段 | 构造器 | 方法

详细信息: 字段 | 构造器 | 方法

javax.persistence Class Persistence

java.lang.Object
  javax.persistence.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

字段摘要
`static String`	`PERSISTENCE_PROVIDER`
`protected static Set<PersistenceProvider>`	`providers`

构造器摘要
`Persistence()`

方法摘要
`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.

类方法继承 java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

字段详细信息

PERSISTENCE_PROVIDER

public static final String PERSISTENCE_PROVIDER

另请参见:: 常量字段

providers

protected static final Set<PersistenceProvider> providers

构造器详细信息

Persistence

public Persistence()

方法详细信息

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