DataSourceConnection


1   /*
2    * Copyright (c) Rafael Steil
3    * All rights reserved.
4    * 
5    * Redistribution and use in source and binary forms, 
6    * with or without modification, are permitted provided 
7    * that the following conditions are met:
8    * 
9    * 1) Redistributions of source code must retain the above 
10   * copyright notice, this list of conditions and the 
11   * following  disclaimer.
12   * 2)  Redistributions in binary form must reproduce the 
13   * above copyright notice, this list of conditions and 
14   * the following disclaimer in the documentation and/or 
15   * other materials provided with the distribution.
16   * 3) Neither the name of "Rafael Steil" nor 
17   * the names of its contributors may be used to endorse 
18   * or promote products derived from this software without 
19   * specific prior written permission.
20   * 
21   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT 
22   * HOLDERS AND CONTRIBUTORS "AS IS" AND ANY 
23   * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, 
24   * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
25   * MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
26   * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 
27   * THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE 
28   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
29   * EXEMPLARY, OR CONSEQUENTIAL DAMAGES 
30   * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
31   * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, 
32   * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
33   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 
34   * IN CONTRACT, STRICT LIABILITY, OR TORT 
35   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 
36   * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
37   * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE
38   * 
39   * Created on Jan 7, 2005 7:44:40 PM
40   *
41   * The JForum Project
42   * http://www.jforum.net
43   */
44  package net.jforum;
45  
46  import java.sql.Connection  ;
47  
48  import javax.naming.Context  ;
49  import javax.naming.InitialContext  ;
50  import javax.sql.DataSource  ;
51  
52  import net.jforum.exceptions.DatabaseException;
53  import net.jforum.util.preferences.ConfigKeys;
54  import net.jforum.util.preferences.SystemGlobals;
55  
56  /**
57   * DataSource connection implementation for JForum.
58   * The datasourcename should be set in the key 
59   * <code>database.datasource.name</code> at 
60   * SystemGlobals.properties.
61   * 
62   * @author Rafael Steil
63   * @version $Id: DataSourceConnection.java,v 1.7 2005/11/30 19:41:28 rafaelsteil Exp $
64   */
65  public class DataSourceConnection extends DBConnection
66  {
67      private DataSource   ds;
68      
69      /**
70       * @see net.jforum.DBConnection#init()
71       */
72      public void init() throws Exception   
73      {
74          Context   context = new InitialContext  ();
75          this.ds = (DataSource  )context.lookup(SystemGlobals.getValue(
76                  ConfigKeys.DATABASE_DATASOURCE_NAME));
77      }
78      /**
79       * @see net.jforum.DBConnection#getConnection()
80       */
81      public Connection   getConnection()
82      {
83          try {
84              return this.ds.getConnection();
85          }
86          catch (Exception   e) {
87              e.printStackTrace();
88              throw new DatabaseException(e);
89          }
90      }
91  
92      /**
93       * @see net.jforum.DBConnection#releaseConnection(java.sql.Connection)
94       */
95      public void releaseConnection(Connection   conn)
96      {
97          try {
98              conn.close();
99          }
100         catch (Exception   e) {}
101     }
102 
103     /**
104      * @see net.jforum.DBConnection#realReleaseAllConnections()
105      */
106     public void realReleaseAllConnections() throws Exception   {}
107 }
108
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