PreparedStatementCache


1   /*
2    * XAPool: Open Source XA JDBC Pool
3    * Copyright (C) 2003 Objectweb.org
4    * Initial Developer: Lutris Technologies Inc.
5    * Contact: xapool-public@lists.debian-sf.objectweb.org
6    *
7    * This library is free software; you can redistribute it and/or
8    * modify it under the terms of the GNU Lesser General Public
9    * License as published by the Free Software Foundation; either
10   * version 2.1 of the License, or any later version.
11   *
12   * This library is distributed in the hope that it will be useful,
13   * but WITHOUT ANY WARRANTY; without even the implied warranty of
14   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15   * Lesser General Public License for more details.
16   *
17   * You should have received a copy of the GNU Lesser General Public
18   * License along with this library; if not, write to the Free Software
19   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
20   * USA
21   */
22   package org.enhydra.jdbc.standard;
23  
24  import org.enhydra.jdbc.util.LRUCache;
25  
26  import java.sql.PreparedStatement  ;
27  import java.sql.SQLException  ;
28  
29  /**
30   * Implementation of LRUCache to handle prepared statements
31   * TODO: Override put to check type
32   */
33  public class PreparedStatementCache extends LRUCache {
34  
35      /**
36       * Constructor
37       */
38      public PreparedStatementCache(int maxSize) {
39          super(maxSize);
40      }
41  
42      /**
43       * Overriden to close the statement
44       */
45      protected void cleanupObject(Object   obj) {
46          if (obj != null) {
47          log.debug(
48              "PreparedStatementCache:cleanupObject class='"
49                  + obj.getClass()
50                  + "'");
51          log.debug(
52              "PreparedStatementCache:cleanupObject close a PreparedStatement o="
53                  + "'"
54                  + obj.toString()
55                  + "'");
56          }
57          try {
58              ((PreparedStatement  ) obj).close();
59              //obj = null;
60          } catch (SQLException   e) {
61              log.error(
62                  "PreparedStatementCache:cleanupObject problem to close"
63                      + "a PreparedStatement: "
64                      + e);
65          }
66      }
67  
68  }
69
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