001    /**
002     * Copyright (c) 2000-2013 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.backgroundtask.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.BackgroundTask;
020    
021    /**
022     * @author Eduardo Garcia
023     */
024    public class BackgroundTaskCompletionDateComparator extends OrderByComparator {
025    
026            public static final String ORDER_BY_ASC =
027                    "BackgroundTask.completionDate ASC";
028    
029            public static final String ORDER_BY_DESC =
030                    "BackgroundTask.completionDate DESC";
031    
032            public static final String[] ORDER_BY_FIELDS = {"completionDate"};
033    
034            public BackgroundTaskCompletionDateComparator() {
035                    this(false);
036            }
037    
038            public BackgroundTaskCompletionDateComparator(boolean ascending) {
039                    _ascending = ascending;
040            }
041    
042            @Override
043            public int compare(Object obj1, Object obj2) {
044                    BackgroundTask backgroundTask1 = (BackgroundTask)obj1;
045                    BackgroundTask backgroundTask2 = (BackgroundTask)obj2;
046    
047                    int value = DateUtil.compareTo(
048                            backgroundTask1.getCompletionDate(),
049                            backgroundTask2.getCompletionDate());
050    
051                    if (_ascending) {
052                            return value;
053                    }
054                    else {
055                            return -value;
056                    }
057            }
058    
059            @Override
060            public String getOrderBy() {
061                    if (_ascending) {
062                            return ORDER_BY_ASC;
063                    }
064                    else {
065                            return ORDER_BY_DESC;
066                    }
067            }
068    
069            @Override
070            public String[] getOrderByFields() {
071                    return ORDER_BY_FIELDS;
072            }
073    
074            @Override
075            public boolean isAscending() {
076                    return _ascending;
077            }
078    
079            private boolean _ascending;
080    
081    }