1   /**
2    * Copyright (c) 2000-2007 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.search;
24  
25  import java.util.ArrayList;
26  import java.util.Comparator;
27  import java.util.List;
28  
29  /**
30   * <a href="DocumentComparator.java.html"><b><i>View Source</i></b></a>
31   *
32   * @author Brian Wing Shun Chan
33   *
34   */
35  public class DocumentComparator implements Comparator {
36  
37      public DocumentComparator() {
38          this(true, false);
39      }
40  
41      public DocumentComparator(boolean asc, boolean caseSensitive) {
42          _asc = asc;
43          _caseSensitive = caseSensitive;
44      }
45  
46      public void addOrderBy(String name) {
47          addOrderBy(name, _asc, _caseSensitive);
48      }
49  
50      public void addOrderBy(String name, boolean asc, boolean caseSensitive) {
51          DocumentComparatorOrderBy orderBy = new DocumentComparatorOrderBy(
52              name, asc, caseSensitive);
53  
54          _columns.add(orderBy);
55      }
56  
57      public int compare(Object obj1, Object obj2) {
58          if (!(obj1 instanceof Document)) {
59              return -1;
60          }
61  
62          if (!(obj2 instanceof Document)) {
63              return 1;
64          }
65  
66          Document doc1 = (Document)obj1;
67          Document doc2 = (Document)obj2;
68  
69          for (int i = 0; i < _columns.size(); i++) {
70              DocumentComparatorOrderBy orderBy =
71                  (DocumentComparatorOrderBy)_columns.get(i);
72  
73              String value1 = doc1.get(orderBy.getName());
74              String value2 = doc2.get(orderBy.getName());
75  
76              if (!orderBy.isAsc()) {
77                  String temp = value1;
78  
79                  value1 = value2;
80                  value2 = temp;
81              }
82  
83              int result = 0;
84  
85              if ((value1 != null) && (value2 != null)) {
86                  if (orderBy.isCaseSensitive()) {
87                      result = value1.compareTo(value2);
88                  }
89                  else {
90                      result = value1.compareToIgnoreCase(value2);
91                  }
92              }
93  
94              if (result != 0) {
95                  return result;
96              }
97          }
98  
99          return 0;
100     }
101 
102     private boolean _asc;
103     private boolean _caseSensitive;
104     private List _columns = new ArrayList();
105 
106 }