EntityManagerProxy (Spring Framework 4.3.30.RELEASE API)

所有超级接口:
EntityManager
```
public interface EntityManagerProxy
extends EntityManager
```
Subinterface of EntityManager to be implemented by EntityManager proxies. Allows access to the underlying target EntityManager.
This interface is mainly intended for framework usage. Application code should prefer the use of the EntityManager.getDelegate() method to access native functionality of the underlying resource.
从以下版本开始:
2.5
作者:
Juergen Hoeller

- 方法概要
  所有方法实例方法抽象方法
  修饰符和类型方法说明
  EntityManager getTargetEntityManager()
  Return the underlying EntityManager that this proxy will delegate to.
  - 从接口继承的方法 javax.persistence.EntityManager
    clear, close, contains, createNamedQuery, createNamedQuery, createNativeQuery, createNativeQuery, createNativeQuery, createQuery, createQuery, createQuery, detach, find, find, find, find, flush, getCriteriaBuilder, getDelegate, getEntityManagerFactory, getFlushMode, getLockMode, getMetamodel, getProperties, getReference, getTransaction, isOpen, joinTransaction, lock, lock, merge, persist, refresh, refresh, refresh, refresh, remove, setFlushMode, setProperty, unwrap

- 方法详细资料
  - getTargetEntityManager
```
EntityManager getTargetEntityManager()
                              throws IllegalStateException
```
    Return the underlying EntityManager that this proxy will delegate to.
    In case of an extended EntityManager, this will be the associated raw EntityManager.
    In case of a shared ("transactional") EntityManager, this will be the raw EntityManager that is currently associated with the transaction. Outside of a transaction, an IllegalStateException will be thrown.
    返回:
    the underlying raw EntityManager (never null)
    抛出:
    IllegalStateException - if no underlying EntityManager is available