001    /**
002     * Copyright (c) 2000-2013 Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portal.dao.jdbc;
016    
017    import com.liferay.portal.kernel.dao.jdbc.CurrentConnection;
018    import com.liferay.portal.kernel.security.pacl.DoPrivileged;
019    
020    import java.sql.Connection;
021    
022    import javax.sql.DataSource;
023    
024    import org.springframework.jdbc.datasource.ConnectionHolder;
025    import org.springframework.transaction.support.TransactionSynchronizationManager;
026    
027    /**
028     * @author Shuyang Zhou
029     */
030    @DoPrivileged
031    public class CurrentConnectionImpl implements CurrentConnection {
032    
033            @Override
034            public Connection getConnection(DataSource dataSource) {
035                    ConnectionHolder connectionHolder =
036                            (ConnectionHolder)TransactionSynchronizationManager.getResource(
037                                    dataSource);
038    
039                    if (connectionHolder == null) {
040                            return null;
041                    }
042                    else {
043                            return connectionHolder.getConnection();
044                    }
045            }
046    
047    }