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Java > Open Source Codes > org > exolab > jms > selector > NotEqual


1 /**
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3  * ("Software"), with or without modification, are permitted provided
4  * that the following conditions are met:
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8  * copy of this document.
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12  * following disclaimer in the documentation and/or other
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21  * nor may "Exolab" appear in their names without prior written
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41  * Copyright 2000-2001,2003 (C) Exoffice Technologies Inc. All Rights Reserved.
42  */
43
44 package org.exolab.jms.selector;
45
46
47 /**
48  * This class implements a '<>' expression.
49  *
50  * @version $Revision: 1.1 $ $Date: 2004/11/26 01:50:44 $
51  * @author <a HREF="mailto:tma@netspace.net.au">Tim Anderson</a>
52  * @see Expression
53  * @see LogicalOperator
54  * @see SBool
55  */
56 class NotEqual extends LogicalOperator {
57
58     /**
59      * Construct a new <code>NotEqual</code> operator
60      *
61      * @param lhs the left hand side of the expression
62      * @param rhs the right hand side of the expression
63      */
64     public NotEqual(final Expression lhs, final Expression rhs) {
65         super("<>", lhs, rhs);
66     }
67
68     /**
69      * Evaluate the expression
70      *
71      * @param lhs the left hand side of the expression
72      * @param rhs the right hand side of the expression
73      * @return the value of <code>lhs &lt;&gt; rhs</code>
74      */
75     protected SBool evaluate(final SObject lhs, final SObject rhs) {
76         return lhs.notEqual(rhs);
77     }
78
79 } //-- NotEqual
80
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