DependencyProperties


1   /*
2    * Copyright (c) 2003-2006, Franz-Josef Elmer, All rights reserved.
3    *
4    * Redistribution and use in source and binary forms, with or without 
5    * modification, are permitted provided that the following conditions are met:
6    * 
7    * - Redistributions of source code must retain the above copyright notice, 
8    *   this list of conditions and the following disclaimer.
9    * - Redistributions in binary form must reproduce the above copyright notice, 
10   *   this list of conditions and the following disclaimer in the documentation 
11   *   and/or other materials provided with the distribution.
12   *
13   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
14   * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 
15   * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
16   * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 
17   * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
18   * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
19   * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
20   * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
21   * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 
22   * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 
23   * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
24   */
25  /*
26   * Created on 07.04.2006
27   */
28  package classycle.dependency;
29  
30  import java.util.HashMap  ;
31  import java.util.Map  ;
32  
33  final class DependencyProperties {
34    private final Map   _defaultProperties;
35    private final Map   _properties = new HashMap  ();
36    
37    DependencyProperties()
38    {
39      this(new HashMap  ());
40    }
41  
42    DependencyProperties(Map   defaultProperties)
43    {
44      _defaultProperties = defaultProperties;
45    }
46    
47    String   getProperty(String   name)
48    {
49      String   result = (String  ) _properties.get(name);
50      if (result == null) 
51      {
52        Object   value = _defaultProperties.get(name);
53        if (value instanceof String  )
54        {
55          result = (String  ) value;
56        }
57      }
58      return result;
59    }
60    
61    void setProperty(String   name, String   value)
62    {
63      _properties.put(name, value);
64    }
65  }
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