1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    * Permission is hereby granted, free of charge, to any person obtaining a copy
5    * of this software and associated documentation files (the "Software"), to deal
6    * in the Software without restriction, including without limitation the rights
7    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8    * copies of the Software, and to permit persons to whom the Software is
9    * furnished to do so, subject to the following conditions:
10   *
11   * The above copyright notice and this permission notice shall be included in
12   * all copies or substantial portions of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portlet.shopping.util.comparator;
24  
25  import com.liferay.portal.kernel.util.OrderByComparator;
26  import com.liferay.portlet.shopping.model.ShoppingItem;
27  
28  /**
29   * <a href="ItemPriceComparator.java.html"><b><i>View Source</i></b></a>
30   *
31   * @author Brian Wing Shun Chan
32   *
33   */
34  public class ItemPriceComparator extends OrderByComparator {
35  
36      public static String ORDER_BY_ASC = "categoryId ASC, price ASC, name ASC";
37  
38      public static String ORDER_BY_DESC =
39          "categoryId DESC, price DESC, name DESC";
40  
41      public ItemPriceComparator() {
42          this(false);
43      }
44  
45      public ItemPriceComparator(boolean asc) {
46          _asc = asc;
47      }
48  
49      public int compare(Object obj1, Object obj2) {
50          ShoppingItem item1 = (ShoppingItem)obj1;
51          ShoppingItem item2 = (ShoppingItem)obj2;
52  
53          Long categoryId1 = new Long(item1.getCategoryId());
54          Long categoryId2 = new Long(item2.getCategoryId());
55  
56          int value = categoryId1.compareTo(categoryId2);
57  
58          if (value == 0) {
59              double price1 = (1 - item1.getDiscount()) * item1.getPrice();
60              double price2 = (1 - item2.getDiscount()) * item2.getPrice();
61  
62              if (price1 < price2) {
63                  value = -1;
64              }
65              else if (price1 > price2) {
66                  value = 1;
67              }
68          }
69  
70          if (value == 0) {
71              value = item1.getName().toLowerCase().compareTo(
72                  item2.getName().toLowerCase());
73          }
74  
75          if (_asc) {
76              return value;
77          }
78          else {
79              return -value;
80          }
81      }
82  
83      public String getOrderBy() {
84          if (_asc) {
85              return ORDER_BY_ASC;
86          }
87          else {
88              return ORDER_BY_DESC;
89          }
90      }
91  
92      private boolean _asc;
93  
94  }