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1   /***
2    * Copyright (c) 2003, 2004, Chess iT
3    * All rights reserved.
4    *
5    * Redistribution and use in source and binary forms, with or without modification,
6    * are permitted provided that the following conditions are met:
7    * 
8    * - Redistributions of source code must retain the above copyright notice, this
9    *   list of conditions and the following disclaimer.
10   *
11   * - Redistributions in binary form must reproduce the above copyright notice,
12   *   this list of conditions and the following disclaimer in the documentation
13   *   and/or other materials provided with the distribution.
14   *
15   * - Neither the name of Chess iT, nor the names of its contributors may be used 
16   *   to endorse or promote products derived from this software without specific
17   *   prior written permission.
18   *
19   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
20   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
21   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
22   * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 
23   * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
24   * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
25   * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
26   * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
27   * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
28   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
29   * POSSIBILITY OF SUCH DAMAGE.
30   * 
31   */
32  package nl.chess.it.util.config.examples.simple;
33  
34  import java.util.Iterator;
35  
36  import nl.chess.it.util.config.ConfigValidationResult;
37  
38  
39  /***
40   * A simple example of the use of a {@link nl.chess.it.util.config.Config} class.
41   *
42   * @author Guus Bosman (Chess iT)
43   * @version $Revision: 1.1.1.1 $
44   */
45  public class SimpleApplication {
46      private static SimpleConfig config;
47  
48      public static void main(String[] args) {
49          String sayingHi = getConfig().getWelcomeText();
50          boolean yesOrNo = getConfig().isThisANiceClass();
51          int numberOfDays = getConfig().getNumberOfDays();
52          java.net.URL url = getConfig().getNiceWebsite();
53      }
54  
55      /***
56       * Returns always the same instance of a {@link SimpleConfig}.
57       * 
58       * @return SimpleConfig. Never <code>null</code>.
59       */
60      private static SimpleConfig getConfig() {
61          if (config == null) {
62              config = new SimpleConfig(SimpleConfig.RESOURCE_NAME);
63  
64              ConfigValidationResult configResult = config.validateConfiguration();
65  
66              if (configResult.thereAreErrors()) {
67                  System.out.println("Errors in configuration");
68  
69                  for (Iterator iter = configResult.getErrors().iterator(); iter.hasNext();) {
70                      System.out.println(" > " + iter.next());
71                  }
72  
73                  System.exit(1);
74              }
75  
76              if (configResult.thereAreUnusedProperties()) {
77                  System.out.println("Unused properties");
78  
79                  for (Iterator iter = configResult.getUnusedProperties().iterator(); iter.hasNext();) {
80                      System.out.println(" > " + iter.next());
81                  }
82              }
83          }
84  
85          return config;
86      }
87  }