1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.apache.commons.el;
18
19 import javax.servlet.jsp.el.ELException;
20 import javax.servlet.jsp.el.FunctionMapper;
21 import javax.servlet.jsp.el.VariableResolver;
22
23 /**
24 *
25 * <p>An expression representing a literal value
26 *
27 * @author Nathan Abramson - Art Technology Group
28 * @author Shawn Bayern
29 * @version $Change: 181177 $$DateTime: 2001/06/26 08:45:09 $$Author: bayard $
30 **/
31
32 public abstract class Literal
33 extends Expression
34 {
35 //-------------------------------------
36 // Properties
37 //-------------------------------------
38 // property value
39
40 Object mValue;
41 public Object getValue ()
42 { return mValue; }
43 public void setValue (Object pValue)
44 { mValue = pValue; }
45
46 //-------------------------------------
47 /**
48 *
49 * Constructor
50 **/
51 public Literal (Object pValue)
52 {
53 mValue = pValue;
54 }
55
56 //-------------------------------------
57 // Expression methods
58 //-------------------------------------
59 /**
60 *
61 * Evaluates to the literal value
62 **/
63 public Object evaluate (VariableResolver pResolver, FunctionMapper functions)
64 throws ELException
65 {
66 return mValue;
67 }
68
69 public Expression bindFunctions(FunctionMapper functions) throws ELException {
70 return this;
71 }
72
73
74 //-------------------------------------
75 }