| ItemPriceComparator.java |
1 /**
2 * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3 *
4 *
5 *
6 *
7 * The contents of this file are subject to the terms of the Liferay Enterprise
8 * Subscription License ("License"). You may not use this file except in
9 * compliance with the License. You can obtain a copy of the License by
10 * contacting Liferay, Inc. See the License for the specific language governing
11 * permissions and limitations under the License, including but not limited to
12 * distribution rights 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 }