hibernatefactorymanager.java

电信计费项目 该系统在Sun Solaris下开发,运行于Apache Tomcat平台,采用J2EE架构

package com.tarena.util;

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


public class HibernateFactoryManager {
	
	private static SessionFactory sf;
	private static ThreadLocal<Session> local;
	
	static{
		try {
			local = new ThreadLocal<Session>();
			sf = new Configuration()
					.configure()
					.buildSessionFactory();
		} catch (HibernateException e) {
			e.printStackTrace();
		}
	}
	
	public synchronized static Session getSession(){
		Session s =(Session)local.get();
		if(s==null && sf!=null){
			s= sf.openSession();
			local.set(s);
		}
		return s;
	}
	
	public synchronized static void releaseSession(){
		Session s = (Session)local.get();
		if(s!=null && s.isOpen()){
			s.close();
		}
		local.set(null);
	}
}