1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    * Permission is hereby granted, free of charge, to any person obtaining a copy
5    * of this software and associated documentation files (the "Software"), to deal
6    * in the Software without restriction, including without limitation the rights
7    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8    * copies of the Software, and to permit persons to whom the Software is
9    * furnished to do so, subject to the following conditions:
10   *
11   * The above copyright notice and this permission notice shall be included in
12   * all copies or substantial portions 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.portal.util;
24  
25  import com.liferay.portal.kernel.util.StringPool;
26  
27  import java.util.Date;
28  
29  /**
30   * <a href="ShutdownUtil.java.html"><b><i>View Source</i></b></a>
31   *
32   * @author Brian Wing Shun Chan
33   *
34   */
35  public class ShutdownUtil {
36  
37      public static void cancel() {
38          _instance._cancel();
39      }
40  
41      public static long getInProcess() {
42          return _instance._getInProcess();
43      }
44  
45      public static String getMessage() {
46          return _instance._getMessage();
47      }
48  
49      public static boolean isInProcess() {
50          return _instance._isInProcess();
51      }
52  
53      public static boolean isShutdown() {
54          return _instance._isShutdown();
55      }
56  
57      public static void shutdown(long milliseconds) {
58          shutdown(milliseconds, StringPool.BLANK);
59      }
60  
61      public static void shutdown(long milliseconds, String message) {
62          _instance._shutdown(milliseconds, message);
63      }
64  
65      private ShutdownUtil() {
66      }
67  
68      private void _cancel() {
69          _date = null;
70          _message = null;
71      }
72  
73      private long _getInProcess() {
74          long milliseconds = 0;
75  
76          if (_date != null) {
77              milliseconds = _date.getTime() - System.currentTimeMillis();
78          }
79  
80          return milliseconds;
81      }
82  
83      private String _getMessage() {
84          return _message;
85      }
86  
87      private boolean _isInProcess() {
88          if (_date == null) {
89              return false;
90          }
91          else {
92              if (_date.after(new Date())) {
93                  return true;
94              }
95              else {
96                  return false;
97              }
98          }
99      }
100 
101     private boolean _isShutdown() {
102         if (_date == null) {
103             return false;
104         }
105         else {
106             if (_date.before(new Date())) {
107                 return true;
108             }
109             else {
110                 return false;
111             }
112         }
113     }
114 
115     private void _shutdown(long milliseconds, String message) {
116         _date = new Date(System.currentTimeMillis() + milliseconds);
117         _message = message;
118     }
119 
120     private static ShutdownUtil _instance = new ShutdownUtil();
121 
122     private Date _date;
123     private String _message;
124 
125 }