001    /**
002     * Copyright (c) 2000-2011 Liferay, Inc. All rights reserved.
003     *
004     * The contents of this file are subject to the terms of the Liferay Enterprise
005     * Subscription License ("License"). You may not use this file except in
006     * compliance with the License. You can obtain a copy of the License by
007     * contacting Liferay, Inc. See the License for the specific language governing
008     * permissions and limitations under the License, including but not limited to
009     * distribution rights of the Software.
010     *
011     *
012     *
013     */
014    
015    package com.liferay.portal.dao.jdbc;
016    
017    import com.liferay.portal.kernel.dao.jdbc.CurrentConnection;
018    
019    import java.sql.Connection;
020    
021    import javax.sql.DataSource;
022    
023    import org.springframework.jdbc.datasource.ConnectionHolder;
024    import org.springframework.transaction.support.TransactionSynchronizationManager;
025    
026    /**
027     * @author Shuyang Zhou
028     */
029    public class CurrentConnectionImpl implements CurrentConnection {
030    
031            public Connection getConnection(DataSource dataSource) {
032                    ConnectionHolder connectionHolder =
033                            (ConnectionHolder)TransactionSynchronizationManager.getResource(
034                                    dataSource);
035    
036                    if (connectionHolder == null) {
037                            return null;
038                    }
039                    else {
040                            return connectionHolder.getConnection();
041                    }
042            }
043    
044    }