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 static String[] ORDER_BY_FIELDS = {"categoryId", "price", "name"};
39  
40      public ItemPriceComparator() {
41          this(false);
42      }
43  
44      public ItemPriceComparator(boolean asc) {
45          _asc = asc;
46      }
47  
48      public int compare(Object obj1, Object obj2) {
49          ShoppingItem item1 = (ShoppingItem)obj1;
50          ShoppingItem item2 = (ShoppingItem)obj2;
51  
52          Long categoryId1 = new Long(item1.getCategoryId());
53          Long categoryId2 = new Long(item2.getCategoryId());
54  
55          int value = categoryId1.compareTo(categoryId2);
56  
57          if (value == 0) {
58              double price1 = (1 - item1.getDiscount()) * item1.getPrice();
59              double price2 = (1 - item2.getDiscount()) * item2.getPrice();
60  
61              if (price1 < price2) {
62                  value = -1;
63              }
64              else if (price1 > price2) {
65                  value = 1;
66              }
67          }
68  
69          if (value == 0) {
70              value = item1.getName().toLowerCase().compareTo(
71                  item2.getName().toLowerCase());
72          }
73  
74          if (_asc) {
75              return value;
76          }
77          else {
78              return -value;
79          }
80      }
81  
82      public String getOrderBy() {
83          if (_asc) {
84              return ORDER_BY_ASC;
85          }
86          else {
87              return ORDER_BY_DESC;
88          }
89      }
90  
91      public String[] getOrderByFields() {
92          return ORDER_BY_FIELDS;
93      }
94  
95      public boolean isAscending() {
96          return _asc;
97      }
98  
99      private boolean _asc;
100 
101 }