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1   /*
2    * Copyright (c) 2004, Codehaus.org
3    *
4    * Permission is hereby granted, free of charge, to any person obtaining a copy of
5    * this software and associated documentation files (the "Software"), to deal in
6    * the Software without restriction, including without limitation the rights to
7    * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
8    * of the Software, and to permit persons to whom the Software is furnished to do
9    * so, subject to the following conditions:
10   *
11   * The above copyright notice and this permission notice shall be included in all
12   * copies or substantial portions of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package org.codehaus.modello;
24  
25  import java.util.Properties;
26  import java.util.Set;
27  import java.util.TreeSet;
28  
29  /**
30   * A Properties class with predictable order: it is sorted by key value. This class is not really fully consistent,
31   * but sufficiently for Modello unit-tests when reading/writing XML samples.
32   *
33   * @author Hervé Boutemy
34   */
35  public class OrderedProperties
36      extends Properties
37  {
38      private static final long serialVersionUID = 4578458610736378768L;
39  
40      public Set<Object> keySet()
41      {
42          return new TreeSet<Object>( super.keySet() );
43      }
44  }