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 = item1.getCategoryId();
048                    Long categoryId2 = item2.getCategoryId();
049    
050                    int value = categoryId1.compareTo(categoryId2);
051    
052                    if (value == 0) {
053                            String name1 = StringUtil.toLowerCase(item1.getName());
054                            String name2 = StringUtil.toLowerCase(item2.getName());
055    
056                            value = name1.compareTo(name2);
057    
058                            if (value == 0) {
059                                    Long itemId1 = item1.getItemId();
060                                    Long itemId2 = item2.getItemId();
061    
062                                    value = itemId1.compareTo(itemId2);
063                            }
064                    }
065    
066                    if (_ascending) {
067                            return value;
068                    }
069                    else {
070                            return -value;
071                    }
072            }
073    
074            @Override
075            public String getOrderBy() {
076                    if (_ascending) {
077                            return ORDER_BY_ASC;
078                    }
079                    else {
080                            return ORDER_BY_DESC;
081                    }
082            }
083    
084            @Override
085            public String[] getOrderByFields() {
086                    return ORDER_BY_FIELDS;
087            }
088    
089            @Override
090            public boolean isAscending() {
091                    return _ascending;
092            }
093    
094            private boolean _ascending;
095    
096    }