KickJava   Java API By Example, From Geeks To Geeks.

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


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 import java.lang.reflect.InvocationTargetException JavaDoc;
59 import java.lang.reflect.Method JavaDoc;
60 import java.util.Map JavaDoc;
61 import javax.servlet.jsp.el.ELException JavaDoc;
62 import javax.servlet.jsp.el.VariableResolver JavaDoc;
63 import javax.servlet.jsp.el.FunctionMapper JavaDoc;
64
65 /**
66  *
67  * <p>Represents an operator that obtains the value of another value's
68  * property. This is a specialization of ArraySuffix - a.b is
69  * equivalent to a["b"]
70  *
71  * @author Nathan Abramson - Art Technology Group
72  * @author Shawn Bayern
73  * @version $Change: 181177 $$DateTime: 2001/06/26 08:45:09 $$Author: luehe $
74  **/

75
76 public class PropertySuffix
77   extends ArraySuffix
78 {
79   //-------------------------------------
80
// Properties
81
//-------------------------------------
82
// property name
83

84   String JavaDoc mName;
85   public String JavaDoc getName ()
86   { return mName; }
87   public void setName (String JavaDoc pName)
88   { mName = pName; }
89
90   //-------------------------------------
91
/**
92    *
93    * Constructor
94    **/

95   public PropertySuffix (String JavaDoc pName)
96   {
97     super (null);
98     mName = pName;
99   }
100
101   //-------------------------------------
102
/**
103    *
104    * Gets the value of the index
105    **/

106   Object JavaDoc evaluateIndex (VariableResolver JavaDoc pResolver,
107                         FunctionMapper JavaDoc functions,
108                         Logger pLogger)
109     throws ELException JavaDoc
110   {
111     return mName;
112   }
113
114   //-------------------------------------
115
/**
116    *
117    * Returns the operator symbol
118    **/

119   String JavaDoc getOperatorSymbol ()
120   {
121     return ".";
122   }
123
124   //-------------------------------------
125
// ValueSuffix methods
126
//-------------------------------------
127
/**
128    *
129    * Returns the expression in the expression language syntax
130    **/

131   public String JavaDoc getExpressionString ()
132   {
133     return "." + StringLiteral.toIdentifierToken (mName);
134   }
135
136   //-------------------------------------
137
}
138
Popular Tags