1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    * Permission is hereby granted, free of charge, to any person obtaining a copy
5    * of this software and associated documentation files (the "Software"), to deal
6    * in the Software without restriction, including without limitation the rights
7    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8    * copies of the Software, and to permit persons to whom the Software is
9    * furnished to do so, subject to the following conditions:
10   *
11   * The above copyright notice and this permission notice shall be included in
12   * all copies or substantial portions of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portal.kernel.dao.jdbc;
24  
25  import com.liferay.portal.kernel.jndi.JNDIUtil;
26  import com.liferay.portal.kernel.log.Log;
27  import com.liferay.portal.kernel.log.LogFactoryUtil;
28  import com.liferay.portal.kernel.util.InfrastructureUtil;
29  
30  import java.sql.Connection;
31  import java.sql.ResultSet;
32  import java.sql.SQLException;
33  import java.sql.Statement;
34  
35  import javax.naming.InitialContext;
36  import javax.naming.NamingException;
37  
38  import javax.sql.DataSource;
39  
40  /**
41   * <a href="DataAccess.java.html"><b><i>View Source</i></b></a>
42   *
43   * @author Brian Wing Shun Chan
44   *
45   */
46  public class DataAccess {
47  
48      public static Connection getConnection() throws SQLException {
49          DataSource ds = InfrastructureUtil.getDataSource();
50  
51          return ds.getConnection();
52      }
53  
54      public static Connection getConnection(String location)
55          throws NamingException, SQLException {
56  
57          InitialContext ctx = new InitialContext();
58  
59          DataSource ds = (DataSource)JNDIUtil.lookup(ctx, location);
60  
61          return ds.getConnection();
62      }
63  
64      public static void cleanUp(Connection connection) {
65          try {
66              if (connection != null) {
67                  connection.close();
68              }
69          }
70          catch (SQLException sqle) {
71              if (_log.isWarnEnabled()) {
72                  _log.warn(sqle.getMessage());
73              }
74          }
75      }
76  
77      public static void cleanUp(Connection connection, Statement statement) {
78          cleanUp(statement);
79          cleanUp(connection);
80      }
81  
82      public static void cleanUp(
83          Connection connection, Statement statement, ResultSet resultSet) {
84  
85          cleanUp(resultSet);
86          cleanUp(statement);
87          cleanUp(connection);
88      }
89  
90      public static void cleanUp(ResultSet resultSet) {
91          try {
92              if (resultSet != null) {
93                  resultSet.close();
94              }
95          }
96          catch (SQLException sqle) {
97              if (_log.isWarnEnabled()) {
98                  _log.warn(sqle.getMessage());
99              }
100         }
101     }
102 
103     public static void cleanUp(Statement statement) {
104         try {
105             if (statement != null) {
106                 statement.close();
107             }
108         }
109         catch (SQLException sqle) {
110             if (_log.isWarnEnabled()) {
111                 _log.warn(sqle.getMessage());
112             }
113         }
114     }
115 
116     private static Log _log = LogFactoryUtil.getLog(DataAccess.class);
117 
118 }