/** * * Copyright 2014 The Darks ORM Project (Liu lihua) * * 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 darks.orm.core.config; import java.util.concurrent.locks.Lock; import java.util.concurrent.locks.ReentrantLock; import javax.sql.DataSource; import darks.orm.datasource.JdbcDataSource; public class JdbcConfiguration extends DataSourceConfiguration { private JdbcDataSource ds; private String driver; private String url; private String username; private String password; private volatile boolean isInited = false; private Lock lock = new ReentrantLock(); public JdbcConfiguration() { } public DataSource getDataSource() throws ClassNotFoundException { if (!isInited) { lock.lock(); try { if (!isInited) { Class.forName(getDriver()); ds = new JdbcDataSource(url, username, password); isInited = true; } } finally { lock.unlock(); } } return ds; } public String getDriver() { return driver; } public void setDriver(String driver) { this.driver = driver; } public String getUrl() { return url; } public void setUrl(String url) { this.url = url; } public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } @Override public void destroy() { ds = null; isInited = false; } }