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.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<Document> {
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(Document doc1, Document doc2) {
58          for (DocumentComparatorOrderBy orderBy : _columns) {
59              String value1 = doc1.get(orderBy.getName());
60              String value2 = doc2.get(orderBy.getName());
61  
62              if (!orderBy.isAsc()) {
63                  String temp = value1;
64  
65                  value1 = value2;
66                  value2 = temp;
67              }
68  
69              int result = 0;
70  
71              if ((value1 != null) && (value2 != null)) {
72                  if (orderBy.isCaseSensitive()) {
73                      result = value1.compareTo(value2);
74                  }
75                  else {
76                      result = value1.compareToIgnoreCase(value2);
77                  }
78              }
79  
80              if (result != 0) {
81                  return result;
82              }
83          }
84  
85          return 0;
86      }
87  
88      private boolean _asc;
89      private boolean _caseSensitive;
90      private List<DocumentComparatorOrderBy> _columns =
91          new ArrayList<DocumentComparatorOrderBy>();
92  
93  }