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.messageboards.util.comparator;
21  
22  import com.liferay.portal.kernel.util.DateUtil;
23  import com.liferay.portal.kernel.util.OrderByComparator;
24  import com.liferay.portlet.messageboards.model.MBMessage;
25  
26  /**
27   * <a href="MessageCreateDateComparator.java.html"><b><i>View Source</i></b></a>
28   *
29   * @author Brian Wing Shun Chan
30   *
31   */
32  public class MessageCreateDateComparator extends OrderByComparator {
33  
34      public static String ORDER_BY_ASC = "createDate ASC";
35  
36      public static String ORDER_BY_DESC = "createDate DESC";
37  
38      public static String[] ORDER_BY_FIELDS = {"createDate"};
39  
40      public MessageCreateDateComparator(boolean asc) {
41          _asc = asc;
42      }
43  
44      public int compare(Object obj1, Object obj2) {
45          MBMessage message1 = (MBMessage)obj1;
46          MBMessage message2 = (MBMessage)obj2;
47  
48          int value = DateUtil.compareTo(
49              message1.getCreateDate(), message2.getCreateDate());
50  
51          if (_asc) {
52              return value;
53          }
54          else {
55              return -value;
56          }
57      }
58  
59      public String getOrderBy() {
60          if (_asc) {
61              return ORDER_BY_ASC;
62          }
63          else {
64              return ORDER_BY_DESC;
65          }
66      }
67  
68      public String[] getOrderByFields() {
69          return ORDER_BY_FIELDS;
70      }
71  
72      public boolean isAscending() {
73          return _asc;
74      }
75  
76      private boolean _asc;
77  
78  }