/**
* Copyright (c) 2005-2012 https://github.com/zhangkaitao
*
* Licensed under the Apache License, Version 2.0 (the "License");
*/
package com.sishuok.es.common.repository.hibernate;
import org.hibernate.Cache;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.ejb.HibernateEntityManagerFactory;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
/**
* 根据 jpa api 获取hibernate相关api
* <p>User: Zhang Kaitao
* <p>Date: 13-5-23 下午6:24
* <p>Version: 1.0
*/
public class HibernateUtils {
/**
* 根据jpa EntityManager 获取 hibernate Session API
*
* @param em
* @return
*/
public static Session getSession(EntityManager em) {
return (Session) em.getDelegate();
}
/**
* 根据jpa EntityManager 获取 hibernate SessionFactory API
*
* @param em
* @return
* @see #getSessionFactory(javax.persistence.EntityManagerFactory)
*/
public static SessionFactory getSessionFactory(EntityManager em) {
return getSessionFactory(em.getEntityManagerFactory());
}
/**
* 根据jpa EntityManagerFactory 获取 hibernate SessionFactory API
*
* @param emf
* @return
*/
public static SessionFactory getSessionFactory(EntityManagerFactory emf) {
return ((HibernateEntityManagerFactory) emf).getSessionFactory();
}
/**
* 根据 jpa EntityManager 获取hibernate Cache API
*
* @param em
* @return
* @see #getCache(javax.persistence.EntityManagerFactory)
*/
public static Cache getCache(EntityManager em) {
return getCache(em.getEntityManagerFactory());
}
/**
* 根据jpa EntityManagerFactory 获取 hibernate Cache API
*
* @param emf
* @return
*/
public static Cache getCache(EntityManagerFactory emf) {
return getSessionFactory(emf).getCache();
}
/**
* 清空一级缓存
*
* @param em
*/
public static void evictLevel1Cache(EntityManager em) {
em.clear();
}
/**
* 根据jpa EntityManager 清空二级缓存
*
* @param em
* @see #evictLevel2Cache(javax.persistence.EntityManagerFactory)
*/
public static void evictLevel2Cache(EntityManager em) {
evictLevel2Cache(em.getEntityManagerFactory());
}
/**
* 根据jpa EntityManagerFactory 清空二级缓存 包括：
* 1、实体缓存
* 2、集合缓存
* 3、查询缓存
* 注意：
* jpa Cache api 只能evict 实体缓存，其他缓存是删不掉的。。。
*
* @param emf
* @see org.hibernate.ejb.EntityManagerFactoryImpl.JPACache#evictAll()
*/
public static void evictLevel2Cache(EntityManagerFactory emf) {
Cache cache = HibernateUtils.getCache(emf);
cache.evictEntityRegions();
cache.evictCollectionRegions();
cache.evictDefaultQueryRegion();
cache.evictQueryRegions();
cache.evictNaturalIdRegions();
}
}