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>Represents an operator that obtains the value of another value's
26 * property. This is a specialization of ArraySuffix - a.b is
27 * equivalent to a["b"]
28 *
29 * @author Nathan Abramson - Art Technology Group
30 * @author Shawn Bayern
31 * @version $Change: 181177 $$DateTime: 2001/06/26 08:45:09 $$Author: bayard $
32 **/
33
34 public class PropertySuffix
35 extends ArraySuffix
36 {
37 //-------------------------------------
38 // Properties
39 //-------------------------------------
40 // property name
41
42 String mName;
43 public String getName ()
44 { return mName; }
45 public void setName (String pName)
46 { mName = pName; }
47
48 //-------------------------------------
49 /**
50 *
51 * Constructor
52 **/
53 public PropertySuffix (String pName)
54 {
55 super (null);
56 mName = pName;
57 }
58
59 //-------------------------------------
60 /**
61 *
62 * Gets the value of the index
63 **/
64 Object evaluateIndex (VariableResolver pResolver, FunctionMapper functions)
65 throws ELException
66 {
67 return mName;
68 }
69
70 //-------------------------------------
71 /**
72 *
73 * Returns the operator symbol
74 **/
75 String getOperatorSymbol ()
76 {
77 return ".";
78 }
79
80 //-------------------------------------
81 // ValueSuffix methods
82 //-------------------------------------
83 /**
84 *
85 * Returns the expression in the expression language syntax
86 **/
87 public String getExpressionString ()
88 {
89 return "." + StringLiteral.toIdentifierToken (mName);
90 }
91
92 //-------------------------------------
93 }