1   /**
2    * Copyright (c) 2000-2010 Liferay, Inc. All rights reserved.
3    *
4    * This library is free software; you can redistribute it and/or modify it under
5    * the terms of the GNU Lesser General Public License as published by the Free
6    * Software Foundation; either version 2.1 of the License, or (at your option)
7    * any later version.
8    *
9    * This library is distributed in the hope that it will be useful, but WITHOUT
10   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
11   * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
12   * details.
13   */
14  
15  package com.liferay.portal.kernel.upgrade.util;
16  
17  import com.liferay.portal.kernel.upgrade.StagnantRowException;
18  import com.liferay.portal.kernel.util.GetterUtil;
19  
20  /**
21   * <a href="DefaultPKMapper.java.html"><b><i>View Source</i></b></a>
22   *
23   * @author Brian Wing Shun Chan
24   */
25  public class DefaultPKMapper extends ValueMapperWrapper {
26  
27      public DefaultPKMapper(ValueMapper valueMapper) {
28          super(valueMapper);
29      }
30  
31      public Object getNewValue(Object oldValue) throws Exception {
32          String oldValueString = GetterUtil.getString(
33              String.valueOf(oldValue));
34  
35          if (oldValueString.equals("-1") || oldValueString.equals("0") ||
36              oldValueString.equals("")) {
37  
38              return new Long(0);
39          }
40          else {
41              try {
42                  ValueMapper valueMapper = getValueMapper();
43  
44                  if (oldValue instanceof String) {
45                      oldValue = oldValueString.toLowerCase();
46                  }
47  
48                  return valueMapper.getNewValue(oldValue);
49              }
50              catch (StagnantRowException sre) {
51                  return new Long(0);
52              }
53          }
54      }
55  
56  }