001
014
015 package com.liferay.portlet.messageboards.util.comparator;
016
017 import com.liferay.portal.kernel.util.DateUtil;
018 import com.liferay.portal.kernel.util.OrderByComparator;
019 import com.liferay.portlet.messageboards.model.MBThread;
020
021
024 public class ThreadLastPostDateComparator extends OrderByComparator<MBThread> {
025
026 public static final String ORDER_BY_ASC =
027 "MBThread.lastPostDate ASC, MBThread.threadId ASC";
028
029 public static final String[] ORDER_BY_CONDITION_FIELDS = {"lastPostDate"};
030
031 public static final String ORDER_BY_DESC =
032 "MBThread.lastPostDate DESC, MBThread.threadId DESC";
033
034 public static final String[] ORDER_BY_FIELDS = {"lastPostDate", "threadId"};
035
036 public ThreadLastPostDateComparator() {
037 this(false);
038 }
039
040 public ThreadLastPostDateComparator(boolean ascending) {
041 _ascending = ascending;
042 }
043
044 @Override
045 public int compare(MBThread thread1, MBThread thread2) {
046 int value = DateUtil.compareTo(
047 thread1.getLastPostDate(), thread2.getLastPostDate());
048
049 if (value == 0) {
050 if (thread1.getThreadId() < thread2.getThreadId()) {
051 value = -1;
052 }
053 else if (thread1.getThreadId() > thread2.getThreadId()) {
054 value = 1;
055 }
056 }
057
058 if (_ascending) {
059 return value;
060 }
061 else {
062 return -value;
063 }
064 }
065
066 @Override
067 public String getOrderBy() {
068 if (_ascending) {
069 return ORDER_BY_ASC;
070 }
071 else {
072 return ORDER_BY_DESC;
073 }
074 }
075
076 @Override
077 public String[] getOrderByConditionFields() {
078 return ORDER_BY_CONDITION_FIELDS;
079 }
080
081 @Override
082 public String[] getOrderByFields() {
083 return ORDER_BY_FIELDS;
084 }
085
086 @Override
087 public boolean isAscending() {
088 return _ascending;
089 }
090
091 private final boolean _ascending;
092
093 }