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 static String[] ORDER_BY_FIELDS = {"categoryId", "price", "name"};
42  
43      public ItemPriceComparator() {
44          this(false);
45      }
46  
47      public ItemPriceComparator(boolean asc) {
48          _asc = asc;
49      }
50  
51      public int compare(Object obj1, Object obj2) {
52          ShoppingItem item1 = (ShoppingItem)obj1;
53          ShoppingItem item2 = (ShoppingItem)obj2;
54  
55          Long categoryId1 = new Long(item1.getCategoryId());
56          Long categoryId2 = new Long(item2.getCategoryId());
57  
58          int value = categoryId1.compareTo(categoryId2);
59  
60          if (value == 0) {
61              double price1 = (1 - item1.getDiscount()) * item1.getPrice();
62              double price2 = (1 - item2.getDiscount()) * item2.getPrice();
63  
64              if (price1 < price2) {
65                  value = -1;
66              }
67              else if (price1 > price2) {
68                  value = 1;
69              }
70          }
71  
72          if (value == 0) {
73              value = item1.getName().toLowerCase().compareTo(
74                  item2.getName().toLowerCase());
75          }
76  
77          if (_asc) {
78              return value;
79          }
80          else {
81              return -value;
82          }
83      }
84  
85      public String getOrderBy() {
86          if (_asc) {
87              return ORDER_BY_ASC;
88          }
89          else {
90              return ORDER_BY_DESC;
91          }
92      }
93  
94      public String[] getOrderByFields() {
95          return ORDER_BY_FIELDS;
96      }
97  
98      public boolean isAscending() {
99          return _asc;
100     }
101 
102     private boolean _asc;
103 
104 }