001    /**
002     * Copyright (c) 2000-2011 Liferay, Inc. All rights reserved.
003     *
004     * The contents of this file are subject to the terms of the Liferay Enterprise
005     * Subscription License ("License"). You may not use this file except in
006     * compliance with the License. You can obtain a copy of the License by
007     * contacting Liferay, Inc. See the License for the specific language governing
008     * permissions and limitations under the License, including but not limited to
009     * distribution rights of the Software.
010     *
011     *
012     *
013     */
014    
015    package com.liferay.portlet.journal.util.comparator;
016    
017    import com.liferay.portal.kernel.util.DateUtil;
018    import com.liferay.portal.kernel.util.OrderByComparator;
019    import com.liferay.portlet.journal.model.JournalArticle;
020    
021    /**
022     * @author Brian Wing Shun Chan
023     */
024    public class ArticleReviewDateComparator extends OrderByComparator {
025    
026            public static String ORDER_BY_ASC = "reviewDate ASC, version ASC";
027    
028            public static String ORDER_BY_DESC = "reviewDate DESC, version DESC";
029    
030            public static String[] ORDER_BY_FIELDS = {"reviewDate", "version"};
031    
032            public ArticleReviewDateComparator() {
033                    this(false);
034            }
035    
036            public ArticleReviewDateComparator(boolean ascending) {
037                    _ascending = ascending;
038            }
039    
040            @Override
041            public int compare(Object obj1, Object obj2) {
042                    JournalArticle article1 = (JournalArticle)obj1;
043                    JournalArticle article2 = (JournalArticle)obj2;
044    
045                    int value = DateUtil.compareTo(
046                            article1.getReviewDate(), article2.getReviewDate());
047    
048                    if (value == 0) {
049                            if (article1.getVersion() < article2.getVersion()) {
050                                    value = -1;
051                            }
052                            else if (article1.getVersion() > article2.getVersion()) {
053                                    value = 1;
054                            }
055                    }
056    
057                    if (_ascending) {
058                            return value;
059                    }
060                    else {
061                            return -value;
062                    }
063            }
064    
065            @Override
066            public String getOrderBy() {
067                    if (_ascending) {
068                            return ORDER_BY_ASC;
069                    }
070                    else {
071                            return ORDER_BY_DESC;
072                    }
073            }
074    
075            @Override
076            public String[] getOrderByFields() {
077                    return ORDER_BY_FIELDS;
078            }
079    
080            @Override
081            public boolean isAscending() {
082                    return _ascending;
083            }
084    
085            private boolean _ascending;
086    
087    }