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.portal.util.comparator;
016    
017    import com.liferay.portal.kernel.util.OrderByComparator;
018    import com.liferay.portal.model.User;
019    
020    /**
021     * @author Brian Wing Shun Chan
022     */
023    public class UserScreenNameComparator extends OrderByComparator {
024    
025            public static final String ORDER_BY_ASC = "screenName ASC";
026    
027            public static final String ORDER_BY_DESC = "screenName DESC";
028    
029            public static final String[] ORDER_BY_FIELDS = {"screenName"};
030    
031            public UserScreenNameComparator() {
032                    this(false);
033            }
034    
035            public UserScreenNameComparator(boolean ascending) {
036                    _ascending = ascending;
037            }
038    
039            @Override
040            public int compare(Object obj1, Object obj2) {
041                    User user1 = (User)obj1;
042                    User user2 = (User)obj2;
043    
044                    int value = user1.getScreenName().compareTo(user2.getScreenName());
045    
046                    if (_ascending) {
047                            return value;
048                    }
049                    else {
050                            return -value;
051                    }
052            }
053    
054            @Override
055            public String getOrderBy() {
056                    if (_ascending) {
057                            return ORDER_BY_ASC;
058                    }
059                    else {
060                            return ORDER_BY_DESC;
061                    }
062            }
063    
064            @Override
065            public String[] getOrderByFields() {
066                    return ORDER_BY_FIELDS;
067            }
068    
069            @Override
070            public boolean isAscending() {
071                    return _ascending;
072            }
073    
074            private boolean _ascending;
075    
076    }