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1   /**
2    * This file is part of the equanda project.
3    *
4    * The contents of this file are subject to the Mozilla Public License Version 1.1 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at http://www.mozilla.org/MPL/
7    *
8    * Software distributed under the License is distributed on an "AS IS" basis, WITHOUT WARRANTY OF
9    * ANY KIND, either express or implied. See the License for the specific language governing rights and
10   * limitations under the License.
11   *
12   * Alternatively, the contents of this file may be used under the terms of
13   * either the GNU General Public License Version 2 or later (the "GPL"), or
14   * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
15   * in which case the provisions of the GPL or the LGPL are applicable instead
16   * of those above. If you wish to allow use of your version of this file only
17   * under the terms of either the GPL or the LGPL, and not to allow others to
18   * use your version of this file under the terms of the MPL, indicate your
19   * decision by deleting the provisions above and replace them with the notice
20   * and other provisions required by the GPL or the LGPL. If you do not delete
21   * the provisions above, a recipient may use your version of this file under
22   * the terms of any one of the MPL, the GPL or the LGPL.
23   */
24  
25  package org.equanda.tapestry5.translators;
26  
27  import org.apache.tapestry5.Translator;
28  import org.apache.tapestry5.ValidationException;
29  import org.apache.tapestry5.ioc.Messages;
30  
31  /**
32   * Tapestry translator for boolean values
33   * 
34   * @author <a href="mailto:vladimir.tkachenko@gmail.com">Vladimir Tkachenko</a>
35   */
36  public class BooleanTranslator
37      implements Translator<Boolean>
38  {
39      /**
40       * Parses the client value to a boolean
41       * 
42       * @throws ValidationException if the clientValue can not be parsed
43       */
44      public Boolean parseClient( String clientValue, Messages messages ) throws ValidationException
45      {
46          try
47          {
48              return new Boolean( clientValue );
49          }
50          catch ( Exception ex )
51          {
52              throw new ValidationException( String.format( "The input value '%s' is not parseable as an boolean value.",
53                      clientValue ) );
54          }
55      }
56  
57      /**
58       * Converts null to the false, non-null to a string representation.
59       */
60      public String toClient( Boolean value )
61      {
62          return value == null ? "false" : value.toString();
63      }
64  
65      public Class<Boolean> getType()
66      {
67          return Boolean.class;
68      }
69  }