1   /**
2    * Copyright (c) 2000-2008 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.portlet.mail.util.comparator;
24  
25  import com.liferay.portal.kernel.util.DateUtil;
26  import com.liferay.portlet.mail.model.MailEnvelope;
27  
28  import java.util.Comparator;
29  
30  /**
31   * <a href="StateComparator.java.html"><b><i>View Source</i></b></a>
32   *
33   * @author Alexander Chow
34   *
35   */
36  public class StateComparator implements Comparator<MailEnvelope> {
37  
38      public StateComparator(boolean asc) {
39          _asc = asc;
40      }
41  
42      public int compare(MailEnvelope mailEnvelope1, MailEnvelope mailEnvelope2) {
43          int value = 0;
44  
45          if (!mailEnvelope1.isRead() && mailEnvelope2.isRead()) {
46              value = 1;
47          }
48          else if (mailEnvelope1.isRead() && !mailEnvelope2.isRead()) {
49              value = -1;
50          }
51          else if (mailEnvelope1.isRead() && mailEnvelope2.isRead()) {
52              if (!mailEnvelope1.isAnswered() && mailEnvelope2.isAnswered()) {
53                  value = 1;
54              }
55              else {
56                  value = -1;
57              }
58          }
59  
60          if (value == 0) {
61              value = DateUtil.compareTo(
62                  mailEnvelope1.getDate(), mailEnvelope2.getDate());
63  
64              if (value == 0) {
65                  Long messageId1 = new Long(mailEnvelope2.getMessageId());
66                  Long messageId2 = new Long(mailEnvelope2.getMessageId());
67  
68                  value = messageId1.compareTo(messageId2);
69              }
70          }
71  
72          if (_asc) {
73              return value;
74          }
75          else {
76              return -value;
77          }
78      }
79  
80      private boolean _asc;
81  
82  }