hibernateutil.java

来自「Java Webservice小例子。应用XFire框架。WSA文件夹下是Ser」· Java 代码 · 共 83 行

package com.hibernate;

import java.io.Serializable;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;

public class HibernateUtil {
	
	private static SessionFactory sessionFactory;
	
	static{
		Configuration cfg = new Configuration();
		cfg.configure();
		sessionFactory = cfg.buildSessionFactory();
	}

	public static SessionFactory getSessionFactory() {
		return sessionFactory;
	}
	
	public static Session getSession(){
		return sessionFactory.openSession();
	}
	
	public static void add(Object entity){
		Session session = null;
		Transaction tx = null;
		try{
			session = HibernateUtil.getSession();
			tx = session.beginTransaction();
			session.save(entity);
			tx.commit();
		}finally{
			if(session != null)
				session.close();
		}
	}
	
	public static void update(Object entity){
		Session session = null;
		Transaction tx = null;
		try{
			session = HibernateUtil.getSession();
			tx = session.beginTransaction();
			session.update(entity);
			tx.commit();
		}finally{
			if(session != null)
				session.close();
		}
	}
	
	public static void delete(Object entity){
		Session session = null;
		Transaction tx = null;
		try{
			session = HibernateUtil.getSession();
			tx = session.beginTransaction();
			session.delete(entity);
			tx.commit();
		}finally{
			if(session != null)
				session.close();
		}
	}
	
	public static Object get(Class clazz, Serializable id){
		Session session = null;
		try{
			session = HibernateUtil.getSession();
			Object obj = session.get(clazz, id);
			return obj;
		}finally{
			if(session != null)	
				session.close();
		}
	}

}