/*
* 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();
}
}