/* * Copyright 2010 Cloud.com, Inc. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.cloud.bridge.util; import java.io.File; import org.hibernate.Session; import org.hibernate.SessionFactory; import org.hibernate.cfg.Configuration; /** * @author Kelven Yang */ public class CloudSessionFactory { private static CloudSessionFactory instance; private SessionFactory factory; private CloudSessionFactory() { Configuration cfg = new Configuration(); File file = ConfigurationHelper.findConfigurationFile("hibernate.cfg.xml"); // // we are packaging hibernate mapping files along with the class files, // make sure class loader use the same class path when initializing hibernate mapping. // This is important when we are deploying and testing at different environment (Tomcat/JUnit test runner) // Thread.currentThread().setContextClassLoader(this.getClass().getClassLoader()); factory = cfg.configure(file).buildSessionFactory(); } public synchronized static CloudSessionFactory getInstance() { if(instance == null) { instance = new CloudSessionFactory(); } return instance; } public Session openSession() { return factory.openSession(); } }