01: /*
02: * The Apache Software License, Version 1.1
03: *
04: * Copyright (c) 1999 The Apache Software Foundation. All rights
05: * reserved.
06: *
07: * Redistribution and use in source and binary forms, with or without
08: * modification, are permitted provided that the following conditions
09: * 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 javax.servlet.jsp.el.ELException;
59: import javax.servlet.jsp.el.VariableResolver;
60: import javax.servlet.jsp.el.FunctionMapper;
61:
62: /**
63: *
64: * <p>Represents an element that can appear as a suffix in a complex
65: * value, such as a property or index operator, or a method call (should
66: * they ever need to be supported).
67: *
68: * @author Nathan Abramson - Art Technology Group
69: * @author Shawn Bayern
70: * @version $Change: 181177 $$DateTime: 2001/06/26 08:45:09 $$Author: luehe $
71: **/
72:
73: public abstract class ValueSuffix {
74: //-------------------------------------
75: /**
76: *
77: * Returns the expression in the expression language syntax
78: **/
79: public abstract String getExpressionString();
80:
81: //-------------------------------------
82: /**
83: *
84: * Evaluates the expression in the given context, operating on the
85: * given value.
86: **/
87: public abstract Object evaluate(Object pValue,
88: VariableResolver pResolver, FunctionMapper functions,
89: Logger pLogger) throws ELException;
90:
91: //-------------------------------------
92: }
|