1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    * Permission is hereby granted, free of charge, to any person obtaining a copy
5    * of this software and associated documentation files (the "Software"), to deal
6    * in the Software without restriction, including without limitation the rights
7    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8    * copies of the Software, and to permit persons to whom the Software is
9    * furnished to do so, subject to the following conditions:
10   *
11   * The above copyright notice and this permission notice shall be included in
12   * all 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 com.liferay.portal.kernel.util;
24  
25  import java.lang.reflect.Method;
26  
27  import java.util.Comparator;
28  
29  /**
30   * <a href="MethodComparator.java.html"><b><i>View Source</i></b></a>
31   *
32   * @author Shuyang Zhou
33   * @author Brian Wing Shun Chan
34   */
35  public class MethodComparator implements Comparator<Method> {
36  
37      public int compare(Method method1, Method method2) {
38          String name1 = method1.getName();
39          String name2 = method2.getName();
40  
41          int value = name1.compareTo(name2);
42  
43          if (value != 0){
44              return value;
45          }
46  
47          Class<?>[] parameterTypes1 = method1.getParameterTypes();
48          Class<?>[] parameterTypes2 = method2.getParameterTypes();
49  
50          int index = 0;
51  
52          while ((index < parameterTypes1.length) &&
53                 (index < parameterTypes2.length)) {
54  
55              Class<?> parameterType1 = parameterTypes1[index];
56              Class<?> parameterType2 = parameterTypes2[index];
57  
58              String parameterTypeName1 = parameterType1.getName();
59              String parameterTypeName2 = parameterType2.getName();
60  
61              value = parameterTypeName1.compareTo(parameterTypeName2);
62  
63              if (value != 0) {
64                  return value;
65              }
66  
67              index++;
68          }
69  
70          if (index < (parameterTypes1.length -1)) {
71              return -1;
72          }
73          else {
74              return 1;
75          }
76      }
77  
78  }