Literal


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.
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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,
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46   * SUCH DAMAGE.
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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  import java.util.Map  ;
59  import javax.servlet.jsp.el.ELException  ;
60  import javax.servlet.jsp.el.VariableResolver  ;
61  import javax.servlet.jsp.el.FunctionMapper  ;
62  
63  /**
64   *
65   * <p>An expression representing a literal value
66   * 
67   * @author Nathan Abramson - Art Technology Group
68   * @author Shawn Bayern
69   * @version $Change: 181177 $$DateTime: 2001/06/26 08:45:09 $$Author: luehe $
70   **/
71  
72  public abstract class Literal
73    extends Expression
74  {
75    //-------------------------------------
76    // Properties
77    //-------------------------------------
78    // property value
79  
80    Object   mValue;
81    public Object   getValue ()
82    { return mValue; }
83    public void setValue (Object   pValue)
84    { mValue = pValue; }
85  
86    //-------------------------------------
87    /**
88     *
89     * Constructor
90     **/
91    public Literal (Object   pValue)
92    {
93      mValue = pValue;
94    }
95  
96    //-------------------------------------
97    // Expression methods
98    //-------------------------------------
99    /**
100    *
101    * Evaluates to the literal value
102    **/
103   public Object   evaluate (VariableResolver   pResolver,
104               FunctionMapper   functions,
105               Logger pLogger)
106     throws ELException  
107   {
108     return mValue;
109   }
110 
111   //-------------------------------------
112 }
113
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