java.lang.Object
- org.springframework.orm.jpa.SharedEntityManagerCreator

```
public abstract class SharedEntityManagerCreator
extends Object
```
Delegate for creating a shareable JPA EntityManager reference for a given EntityManagerFactory.
A shared EntityManager will behave just like an EntityManager fetched from an application server's JNDI environment, as defined by the JPA specification. It will delegate all calls to the current transactional EntityManager, if any; otherwise it will fall back to a newly created EntityManager per operation.
For a behavioral definition of such a shared transactional EntityManager, see PersistenceContextType.TRANSACTION and its discussion in the JPA spec document. This is also the default being used for the annotation-based PersistenceContext.type().
从以下版本开始:
2.0
作者:
Juergen Hoeller, Rod Johnson, Oliver Gierke
另请参阅:
PersistenceContext, PersistenceContextType.TRANSACTION, JpaTransactionManager, ExtendedEntityManagerCreator

构造器概要
构造器
构造器说明
SharedEntityManagerCreator()

方法概要

所有方法静态方法具体方法
修饰符和类型	方法	说明
`static EntityManager`	`createSharedEntityManager(EntityManagerFactory emf)`	Create a transactional EntityManager proxy for the given EntityManagerFactory.
`static EntityManager`	`createSharedEntityManager(EntityManagerFactory emf, Map<?,?> properties)`	Create a transactional EntityManager proxy for the given EntityManagerFactory.
`static EntityManager`	`createSharedEntityManager(EntityManagerFactory emf, Map<?,?> properties, boolean synchronizedWithTransaction)`	Create a transactional EntityManager proxy for the given EntityManagerFactory.
`static EntityManager`	`createSharedEntityManager(EntityManagerFactory emf, Map<?,?> properties, boolean synchronizedWithTransaction, Class<?>... entityManagerInterfaces)`	Create a transactional EntityManager proxy for the given EntityManagerFactory.
`static EntityManager`	`createSharedEntityManager(EntityManagerFactory emf, Map<?,?> properties, Class<?>... entityManagerInterfaces)`	Create a transactional EntityManager proxy for the given EntityManagerFactory.

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- 构造器详细资料
  - SharedEntityManagerCreator
```
public SharedEntityManagerCreator()
```
- 方法详细资料
  - createSharedEntityManager
```
public static EntityManager createSharedEntityManager(EntityManagerFactory emf)
```
    Create a transactional EntityManager proxy for the given EntityManagerFactory.
    参数:
    emf - the EntityManagerFactory to delegate to.
    返回:
    a shareable transaction EntityManager proxy
  - createSharedEntityManager
```
public static EntityManager createSharedEntityManager(EntityManagerFactory emf,
                                                      Map<?,?> properties)
```
    Create a transactional EntityManager proxy for the given EntityManagerFactory.
    参数:
    emf - the EntityManagerFactory to delegate to.
    properties - the properties to be passed into the createEntityManager call (may be null)
    返回:
    a shareable transaction EntityManager proxy
  - createSharedEntityManager
```
public static EntityManager createSharedEntityManager(EntityManagerFactory emf,
                                                      Map<?,?> properties,
                                                      boolean synchronizedWithTransaction)
```
    Create a transactional EntityManager proxy for the given EntityManagerFactory.
    参数:
    emf - the EntityManagerFactory to delegate to.
    properties - the properties to be passed into the createEntityManager call (may be null)
    synchronizedWithTransaction - whether to automatically join ongoing transactions (according to the JPA 2.1 SynchronizationType rules)
    返回:
    a shareable transaction EntityManager proxy
    从以下版本开始:
    4.0
  - createSharedEntityManager
```
public static EntityManager createSharedEntityManager(EntityManagerFactory emf,
                                                      Map<?,?> properties,
                                                      Class<?>... entityManagerInterfaces)
```
    Create a transactional EntityManager proxy for the given EntityManagerFactory.
    参数:
    emf - the EntityManagerFactory to obtain EntityManagers from as needed
    properties - the properties to be passed into the createEntityManager call (may be null)
    entityManagerInterfaces - the interfaces to be implemented by the EntityManager. Allows the addition or specification of proprietary interfaces.
    返回:
    a shareable transactional EntityManager proxy
  - createSharedEntityManager
```
public static EntityManager createSharedEntityManager(EntityManagerFactory emf,
                                                      Map<?,?> properties,
                                                      boolean synchronizedWithTransaction,
                                                      Class<?>... entityManagerInterfaces)
```
    Create a transactional EntityManager proxy for the given EntityManagerFactory.
    参数:
    emf - the EntityManagerFactory to obtain EntityManagers from as needed
    properties - the properties to be passed into the createEntityManager call (may be null)
    synchronizedWithTransaction - whether to automatically join ongoing transactions (according to the JPA 2.1 SynchronizationType rules)
    entityManagerInterfaces - the interfaces to be implemented by the EntityManager. Allows the addition or specification of proprietary interfaces.
    返回:
    a shareable transactional EntityManager proxy
    从以下版本开始:
    4.0

类 SharedEntityManagerCreator

构造器概要

方法概要

从类继承的方法 java.lang.Object

构造器详细资料

SharedEntityManagerCreator

方法详细资料

createSharedEntityManager

createSharedEntityManager

createSharedEntityManager

createSharedEntityManager

createSharedEntityManager