| ItemPriceComparator.java |
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 }