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Java > Open Source Codes > org > objectweb > dream > pushwithreturn > KeyInteger


1 /**
2  * Dream
3  * Copyright (C) 2003-2004 INRIA Rhone-Alpes
4  *
5  * This library is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU Lesser General Public
7  * License as published by the Free Software Foundation; either
8  * version 2 of the License, or (at your option) any later version.
9  *
10  * This library is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13  * Lesser General Public License for more details.
14  *
15  * You should have received a copy of the GNU Lesser General Public
16  * License along with this library; if not, write to the Free Software
17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18  *
19  * Contact : dream@objectweb.org
20  *
21  * Initial developer(s): Vivien Quema
22  * Contributor(s):
23  */
24
25 package org.objectweb.dream.pushwithreturn;
26
27 import org.objectweb.dream.pool.Recyclable;
28
29 /**
30  * Implementation of the <code>Key</code> interface that uses positive
31  * integers.
32  */
33 public class KeyInteger implements Key, Recyclable
34 {
35
36   private boolean isAll = false;
37
38   private int key = -1;
39
40   // ---------------------------------------------------------------------------
41 // Constructors.
42 // ---------------------------------------------------------------------------
43
44   /**
45    * Constructor.
46    *
47    * @param key the key.
48    * @param isAll boolean indicating if this is an "AllKey".
49    */
50   public KeyInteger(int key, boolean isAll)
51   {
52     this.key = key;
53     this.isAll = isAll;
54   }
55
56   // ---------------------------------------------------------------------------
57 // Implementation of the Key interface.
58 // ---------------------------------------------------------------------------
59
60   /**
61    * @see org.objectweb.dream.pushwithreturn.Key#isAll()
62    */
63   public boolean isAll()
64   {
65     return isAll;
66   }
67
68   // ---------------------------------------------------------------------------
69 // Implementation of the Recyclable interface.
70 // ---------------------------------------------------------------------------
71
72   /**
73    * @see org.objectweb.dream.pool.Recyclable#recycle()
74    */
75   public void recycle()
76   {
77     isAll = false;
78     key = -1;
79   }
80
81   // ---------------------------------------------------------------------------
82 // Overriden methods.
83 // ---------------------------------------------------------------------------
84
85   /**
86    * @see java.lang.Object#equals(java.lang.Object)
87    */
88   public boolean equals(Object JavaDoc obj)
89   {
90     return key == ((KeyInteger) obj).key;
91   }
92
93   /**
94    * @see java.lang.Object#hashCode()
95    */
96   public int hashCode()
97   {
98     return key;
99   }
100 }
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