001    /**
002     * Copyright (c) 2000-2010 Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portlet.bookmarks.util.comparator;
016    
017    import com.liferay.portal.kernel.util.DateUtil;
018    import com.liferay.portal.kernel.util.OrderByComparator;
019    import com.liferay.portlet.bookmarks.model.BookmarksEntry;
020    
021    /**
022     * @author Brian Wing Shun Chan
023     */
024    public class EntryModifiedDateComparator extends OrderByComparator {
025    
026            public static String ORDER_BY_ASC = "modifiedDate ASC";
027    
028            public static String ORDER_BY_DESC = "modifiedDate DESC";
029    
030            public static String[] ORDER_BY_FIELDS = {"modifiedDate"};
031    
032            public EntryModifiedDateComparator() {
033                    this(false);
034            }
035    
036            public EntryModifiedDateComparator(boolean ascending) {
037                    _ascending = ascending;
038            }
039    
040            public int compare(Object obj1, Object obj2) {
041                    BookmarksEntry entry1 = (BookmarksEntry)obj1;
042                    BookmarksEntry entry2 = (BookmarksEntry)obj2;
043    
044                    int value = DateUtil.compareTo(
045                            entry1.getModifiedDate(), entry2.getModifiedDate());
046    
047                    if (_ascending) {
048                            return value;
049                    }
050                    else {
051                            return -value;
052                    }
053            }
054    
055            public String getOrderBy() {
056                    if (_ascending) {
057                            return ORDER_BY_ASC;
058                    }
059                    else {
060                            return ORDER_BY_DESC;
061                    }
062            }
063    
064            public String[] getOrderByFields() {
065                    return ORDER_BY_FIELDS;
066            }
067    
068            public boolean isAscending() {
069                    return _ascending;
070            }
071    
072            private boolean _ascending;
073    
074    }