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.portlet.shopping.model.ShoppingItem;
019    
020    /**
021     * @author Brian Wing Shun Chan
022     */
023    public class ItemSKUComparator extends OrderByComparator {
024    
025            public static final String ORDER_BY_ASC =
026                    "ShoppingItem.categoryId ASC, ShoppingItem.sku ASC";
027    
028            public static final String ORDER_BY_DESC =
029                    "ShoppingItem.categoryId DESC, ShoppingItem.sku DESC";
030    
031            public static final String[] ORDER_BY_FIELDS = {"categoryId", "sku"};
032    
033            public ItemSKUComparator() {
034                    this(false);
035            }
036    
037            public ItemSKUComparator(boolean ascending) {
038                    _ascending = ascending;
039            }
040    
041            @Override
042            public int compare(Object obj1, Object obj2) {
043                    ShoppingItem item1 = (ShoppingItem)obj1;
044                    ShoppingItem item2 = (ShoppingItem)obj2;
045    
046                    Long categoryId1 = new Long(item1.getCategoryId());
047                    Long categoryId2 = new Long(item2.getCategoryId());
048    
049                    int value = categoryId1.compareTo(categoryId2);
050    
051                    if (value == 0) {
052                            value = item1.getSku().compareTo(item2.getSku());
053                    }
054    
055                    if (_ascending) {
056                            return value;
057                    }
058                    else {
059                            return -value;
060                    }
061            }
062    
063            @Override
064            public String getOrderBy() {
065                    if (_ascending) {
066                            return ORDER_BY_ASC;
067                    }
068                    else {
069                            return ORDER_BY_DESC;
070                    }
071            }
072    
073            @Override
074            public String[] getOrderByFields() {
075                    return ORDER_BY_FIELDS;
076            }
077    
078            @Override
079            public boolean isAscending() {
080                    return _ascending;
081            }
082    
083            private boolean _ascending;
084    
085    }