001    /**
002     * Copyright (c) 2000-present 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.portal.util.comparator;
016    
017    import com.liferay.portal.kernel.util.DateUtil;
018    import com.liferay.portal.kernel.util.OrderByComparator;
019    import com.liferay.portal.model.LayoutRevision;
020    
021    /**
022     * @author Julio Camarero
023     */
024    public class LayoutRevisionCreateDateComparator
025            extends OrderByComparator<LayoutRevision> {
026    
027            public static final String ORDER_BY_ASC = "LayoutRevision.createDate ASC";
028    
029            public static final String ORDER_BY_DESC = "LayoutRevision.createDate DESC";
030    
031            public static final String[] ORDER_BY_FIELDS = {"createDate"};
032    
033            public LayoutRevisionCreateDateComparator() {
034                    this(false);
035            }
036    
037            public LayoutRevisionCreateDateComparator(boolean ascending) {
038                    _ascending = ascending;
039            }
040    
041            @Override
042            public int compare(
043                    LayoutRevision layoutRevision1, LayoutRevision layoutRevision2) {
044    
045                    int value = DateUtil.compareTo(
046                            layoutRevision1.getCreateDate(), layoutRevision2.getCreateDate());
047    
048                    if (_ascending) {
049                            return value;
050                    }
051                    else {
052                            return -value;
053                    }
054            }
055    
056            @Override
057            public String getOrderBy() {
058                    if (_ascending) {
059                            return ORDER_BY_ASC;
060                    }
061                    else {
062                            return ORDER_BY_DESC;
063                    }
064            }
065    
066            @Override
067            public String[] getOrderByFields() {
068                    return ORDER_BY_FIELDS;
069            }
070    
071            @Override
072            public boolean isAscending() {
073                    return _ascending;
074            }
075    
076            private final boolean _ascending;
077    
078    }