1
22
23 package com.liferay.portlet.mail.util.comparator;
24
25 import com.liferay.portal.kernel.util.DateUtil;
26 import com.liferay.portal.kernel.util.GetterUtil;
27 import com.liferay.portlet.mail.model.MailEnvelope;
28
29 import java.util.Comparator;
30
31
37 public class SubjectComparator implements Comparator<MailEnvelope> {
38
39 public SubjectComparator(boolean asc) {
40 _asc = asc;
41 }
42
43 public int compare(MailEnvelope mailEnvelope1, MailEnvelope mailEnvelope2) {
44 String subject1 = _getSubject(mailEnvelope1.getSubject());
45 String subject2 = _getSubject(mailEnvelope2.getSubject());
46
47 int value = subject1.compareTo(subject2);
48
49 if (value == 0) {
50 value = DateUtil.compareTo(
51 mailEnvelope1.getDate(), mailEnvelope2.getDate());
52 }
53
54 if (value == 0) {
55 Long messageId1 = new Long(mailEnvelope1.getMessageId());
56 Long messageId2 = new Long(mailEnvelope2.getMessageId());
57
58 value = messageId1.compareTo(messageId2);
59 }
60
61 if (_asc) {
62 return value;
63 }
64 else {
65 return -value;
66 }
67 }
68
69 private String _getSubject(String subject) {
70 subject = GetterUtil.getString(subject).toLowerCase();
71
72 while (subject.startsWith("re:") || subject.startsWith("re>") ||
73 subject.startsWith("fw:") || subject.startsWith("fw>")) {
74
75 subject = subject.substring(3).trim();
76 }
77
78 return subject;
79 }
80
81 private boolean _asc;
82
83 }