Result


1   /*
2    * Copyright (c) 2003, Rafael Steil
3    * All rights reserved.
4   
5    * Redistribution and use in source and binary forms, 
6    * with or without modification, are permitted provided 
7    * that the following conditions are met:
8   
9    * 1) Redistributions of source code must retain the above 
10   * copyright notice, this list of conditions and the 
11   * following  disclaimer.
12   * 2)  Redistributions in binary form must reproduce the 
13   * above copyright notice, this list of conditions and 
14   * the following disclaimer in the documentation and/or 
15   * other materials provided with the distribution.
16   * 3) Neither the name of "Rafael Steil" nor 
17   * the names of its contributors may be used to endorse 
18   * or promote products derived from this software without 
19   * specific prior written permission.
20   * 
21   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT 
22   * HOLDERS AND CONTRIBUTORS "AS IS" AND ANY 
23   * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, 
24   * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
25   * MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
26   * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 
27   * THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE 
28   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
29   * EXEMPLARY, OR CONSEQUENTIAL DAMAGES 
30   * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
31   * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, 
32   * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
33   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 
34   * IN CONTRACT, STRICT LIABILITY, OR TORT 
35   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 
36   * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
37   * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE
38   * 
39   * This file creation date: Jan 27, 2004
40   * net.jforum.util.concurrent.Result.java
41   * The JForum Project
42   * http://www.jforum.net
43   * 
44   * $Id: Result.java,v 1.4 2005/07/26 03:05:08 rafaelsteil Exp $
45   */
46  package net.jforum.util.concurrent;
47  
48  /**
49   * @author Rodrigo Kumpera
50   */
51  public interface Result 
52  {   
53      /**
54       * Returns if the task has thrown an exception or not
55       * */
56      boolean hasThrown() throws IllegalStateException  ;
57      
58      /**
59       * Returns the result of the task
60       * */
61      Object   getResult() throws IllegalStateException  ;
62  
63      /**
64       * Returns the exception thrown by the task
65       * */
66      Exception   getException() throws IllegalStateException  ;
67      
68      /**
69       * Waits the completion of the task
70       * */
71      void waitResult() throws IllegalStateException  , InterruptedException  ; 
72  
73      /**
74       * Waits the completion of the task
75       * */
76      boolean poolResult(long timeout) throws IllegalStateException  , InterruptedException  ; 
77  }
78
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