1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    * The contents of this file are subject to the terms of the Liferay Enterprise
5    * Subscription License ("License"). You may not use this file except in
6    * compliance with the License. You can obtain a copy of the License by
7    * contacting Liferay, Inc. See the License for the specific language governing
8    * permissions and limitations under the License, including but not limited to
9    * distribution rights of the Software.
10   *
11   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
12   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
13   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
14   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
15   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
16   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
17   * SOFTWARE.
18   */
19  
20  package com.liferay.portlet.shopping.util.comparator;
21  
22  import com.liferay.portal.kernel.util.OrderByComparator;
23  import com.liferay.portlet.shopping.model.ShoppingItem;
24  
25  /**
26   * <a href="ItemPriceComparator.java.html"><b><i>View Source</i></b></a>
27   *
28   * @author Brian Wing Shun Chan
29   *
30   */
31  public class ItemPriceComparator extends OrderByComparator {
32  
33      public static String ORDER_BY_ASC = "categoryId ASC, price ASC, name ASC";
34  
35      public static String ORDER_BY_DESC =
36          "categoryId DESC, price DESC, name DESC";
37  
38      public ItemPriceComparator() {
39          this(false);
40      }
41  
42      public ItemPriceComparator(boolean asc) {
43          _asc = asc;
44      }
45  
46      public int compare(Object obj1, Object obj2) {
47          ShoppingItem item1 = (ShoppingItem)obj1;
48          ShoppingItem item2 = (ShoppingItem)obj2;
49  
50          Long categoryId1 = new Long(item1.getCategoryId());
51          Long categoryId2 = new Long(item2.getCategoryId());
52  
53          int value = categoryId1.compareTo(categoryId2);
54  
55          if (value == 0) {
56              double price1 = (1 - item1.getDiscount()) * item1.getPrice();
57              double price2 = (1 - item2.getDiscount()) * item2.getPrice();
58  
59              if (price1 < price2) {
60                  value = -1;
61              }
62              else if (price1 > price2) {
63                  value = 1;
64              }
65          }
66  
67          if (value == 0) {
68              value = item1.getName().toLowerCase().compareTo(
69                  item2.getName().toLowerCase());
70          }
71  
72          if (_asc) {
73              return value;
74          }
75          else {
76              return -value;
77          }
78      }
79  
80      public String getOrderBy() {
81          if (_asc) {
82              return ORDER_BY_ASC;
83          }
84          else {
85              return ORDER_BY_DESC;
86          }
87      }
88  
89      private boolean _asc;
90  
91  }