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.shopping.util.comparator;
016    
017    import com.liferay.portal.kernel.util.OrderByComparator;
018    import com.liferay.portal.kernel.util.StringUtil;
019    import com.liferay.portlet.shopping.model.ShoppingItem;
020    
021    /**
022     * @author Brian Wing Shun Chan
023     */
024    public class ItemNameComparator extends OrderByComparator {
025    
026            public static final String ORDER_BY_ASC =
027                    "ShoppingItem.categoryId ASC, ShoppingItem.name ASC";
028    
029            public static final String ORDER_BY_DESC =
030                    "ShoppingItem.categoryId DESC, ShoppingItem.name DESC";
031    
032            public static final String[] ORDER_BY_FIELDS = {"categoryId", "name"};
033    
034            public ItemNameComparator() {
035                    this(false);
036            }
037    
038            public ItemNameComparator(boolean ascending) {
039                    _ascending = ascending;
040            }
041    
042            @Override
043            public int compare(Object obj1, Object obj2) {
044                    ShoppingItem item1 = (ShoppingItem)obj1;
045                    ShoppingItem item2 = (ShoppingItem)obj2;
046    
047                    Long categoryId1 = new Long(item1.getCategoryId());
048                    Long categoryId2 = new Long(item2.getCategoryId());
049    
050                    int value = categoryId1.compareTo(categoryId2);
051    
052                    if (value == 0) {
053                            value = StringUtil.toLowerCase(item1.getName()).compareTo(
054                                    StringUtil.toLowerCase(item2.getName()));
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    }