SqlTimestampFieldMapping


1   /**
2    * JOnAS: Java(TM) Open Application Server
3    * Copyright (C) 1999-2004 Bull S.A.
4    * Contact: jonas-team@objectweb.org
5    * 
6    * This library is free software; you can redistribute it and/or
7    * modify it under the terms of the GNU Lesser General Public
8    * License as published by the Free Software Foundation; either
9    * version 2.1 of the License, or any later version.
10   * 
11   * This library is distributed in the hope that it will be useful,
12   * but WITHOUT ANY WARRANTY; without even the implied warranty of
13   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14   * Lesser General Public License for more details.
15   * 
16   * You should have received a copy of the GNU Lesser General Public
17   * License along with this library; if not, write to the Free Software
18   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
19   * USA
20   *
21   * --------------------------------------------------------------------------
22   * $Id: SqlTimestampFieldMapping.java,v 1.2 2004/09/17 08:25:02 joaninh Exp $
23   * --------------------------------------------------------------------------
24   */
25  
26  package org.objectweb.jonas_ejb.lib;
27  
28  /**
29   * Conversion java.util.Date <-> java.sql.Timestamp. <br>
30   * The StorageType is the JORM type, and the MemoryType is the JOnAS type (bean field type).
31   * @author Helene Joanin
32   */
33  public class SqlTimestampFieldMapping {
34  
35      /**
36       * Retrieves the java type corresponding to the type into the data support.
37       * @return a Class object (never null).
38       */
39      public static Class   getStorageType() {
40          return java.util.Date  .class;
41      }
42  
43      /**
44       * Retrieves the java type corresponding to the type in memory.
45       * @return a Class object (never null).
46       */
47      public static Class   getMemoryType() {
48          return java.sql.Timestamp  .class;
49      }
50  
51      /**
52       * Converts a value from the data support into a value in memory
53       * @param storagevalue is the value store in the support (can be null).
54       * @return the value in memory (can be null).
55       */
56      public static Object   toMemory(Object   storagevalue) {
57          if (storagevalue == null) {
58              return null;
59          }
60          return (storagevalue instanceof java.sql.Timestamp  
61                  ? storagevalue
62                  : new java.sql.Timestamp  (((java.util.Date  ) storagevalue).getTime()));
63      }
64  
65      /**
66       * Converts a value from the data support into a value in memory
67       * @param memoryvalue the value in memory (can be null).
68       * @return is the value store in the support (can be null).
69       */
70      public static Object   toStorage(Object   memoryvalue) {
71          return memoryvalue;
72      }
73  }
74
A to Z: JavaDoc & Examples Daily Java News & Articles Open Source Projects Open Source Codes Free Computer Books Remove Frame
Popular Tags