KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > apache > commons > el > NotEqualsOperator


1 /*
2  * The Apache Software License, Version 1.1
3  *
4  * Copyright (c) 1999 The Apache Software Foundation. All rights
5  * reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  *
11  * 1. Redistributions of source code must retain the above copyright
12  * notice, this list of conditions and the following disclaimer.
13  *
14  * 2. Redistributions in binary form must reproduce the above copyright
15  * notice, this list of conditions and the following disclaimer in
16  * the documentation and/or other materials provided with the
17  * distribution.
18  *
19  * 3. The end-user documentation included with the redistribution, if
20  * any, must include the following acknowlegement:
21  * "This product includes software developed by the
22  * Apache Software Foundation (http://www.apache.org/)."
23  * Alternately, this acknowlegement may appear in the software itself,
24  * if and wherever such third-party acknowlegements normally appear.
25  *
26  * 4. The names "The Jakarta Project", "Tomcat", and "Apache Software
27  * Foundation" must not be used to endorse or promote products derived
28  * from this software without prior written permission. For written
29  * permission, please contact apache@apache.org.
30  *
31  * 5. Products derived from this software may not be called "Apache"
32  * nor may "Apache" appear in their names without prior written
33  * permission of the Apache Group.
34  *
35  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
36  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
37  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
38  * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
39  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
40  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
41  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
42  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
43  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
44  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
45  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
46  * SUCH DAMAGE.
47  * ====================================================================
48  *
49  * This software consists of voluntary contributions made by many
50  * individuals on behalf of the Apache Software Foundation. For more
51  * information on the Apache Software Foundation, please see
52  * <http://www.apache.org/>.
53  *
54  */

55
56 package org.apache.commons.el;
57
58 /**
59  *
60  * <p>The implementation of the not equals operator
61  *
62  * @author Nathan Abramson - Art Technology Group
63  * @version $Change: 181177 $$DateTime: 2001/06/26 08:45:09 $$Author: luehe $
64  **/

65
66 public class NotEqualsOperator
67   extends EqualityOperator
68 {
69   //-------------------------------------
70
// Singleton
71
//-------------------------------------
72

73   public static final NotEqualsOperator SINGLETON =
74     new NotEqualsOperator ();
75
76   //-------------------------------------
77
/**
78    *
79    * Constructor
80    **/

81   public NotEqualsOperator ()
82   {
83   }
84
85   //-------------------------------------
86
// Expression methods
87
//-------------------------------------
88
/**
89    *
90    * Returns the symbol representing the operator
91    **/

92   public String JavaDoc getOperatorSymbol ()
93   {
94     return "!=";
95   }
96
97   //-------------------------------------
98
/**
99    *
100    * Applies the operator given the fact that the two elements are
101    * equal.
102    **/

103   public boolean apply (boolean pAreEqual,
104             Logger pLogger)
105   {
106     return !pAreEqual;
107   }
108   
109   //-------------------------------------
110
}
111
Popular Tags