001: /*
002: * The Apache Software License, Version 1.1
003: *
004: * Copyright (c) 1999 The Apache Software Foundation. All rights
005: * reserved.
006: *
007: * Redistribution and use in source and binary forms, with or without
008: * modification, are permitted provided that the following conditions
009: * are met:
010: *
011: * 1. Redistributions of source code must retain the above copyright
012: * notice, this list of conditions and the following disclaimer.
013: *
014: * 2. Redistributions in binary form must reproduce the above copyright
015: * notice, this list of conditions and the following disclaimer in
016: * the documentation and/or other materials provided with the
017: * distribution.
018: *
019: * 3. The end-user documentation included with the redistribution, if
020: * any, must include the following acknowlegement:
021: * "This product includes software developed by the
022: * Apache Software Foundation (http://www.apache.org/)."
023: * Alternately, this acknowlegement may appear in the software itself,
024: * if and wherever such third-party acknowlegements normally appear.
025: *
026: * 4. The names "The Jakarta Project", "Tomcat", and "Apache Software
027: * Foundation" must not be used to endorse or promote products derived
028: * from this software without prior written permission. For written
029: * permission, please contact apache@apache.org.
030: *
031: * 5. Products derived from this software may not be called "Apache"
032: * nor may "Apache" appear in their names without prior written
033: * permission of the Apache Group.
034: *
035: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
036: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
037: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
038: * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
039: * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
040: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
041: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
042: * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
043: * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
044: * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
045: * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
046: * SUCH DAMAGE.
047: * ====================================================================
048: *
049: * This software consists of voluntary contributions made by many
050: * individuals on behalf of the Apache Software Foundation. For more
051: * information on the Apache Software Foundation, please see
052: * <http://www.apache.org/>.
053: *
054: */
055:
056: package org.jbpm.jpdl.el.impl;
057:
058: import org.jbpm.jpdl.el.ELException;
059: import org.jbpm.jpdl.el.FunctionMapper;
060: import org.jbpm.jpdl.el.VariableResolver;
061:
062: /**
063: *
064: * <p>Represents an operator that obtains the value of another value's
065: * property. This is a specialization of ArraySuffix - a.b is
066: * equivalent to a["b"]
067: *
068: * @author Nathan Abramson - Art Technology Group
069: * @author Shawn Bayern
070: * @version $Change: 181177 $$DateTime: 2001/06/26 08:45:09 $$Author$
071: **/
072:
073: public class PropertySuffix extends ArraySuffix {
074: //-------------------------------------
075: // Properties
076: //-------------------------------------
077: // property name
078:
079: String mName;
080:
081: public String getName() {
082: return mName;
083: }
084:
085: public void setName(String pName) {
086: mName = pName;
087: }
088:
089: //-------------------------------------
090: /**
091: *
092: * Constructor
093: **/
094: public PropertySuffix(String pName) {
095: super (null);
096: mName = pName;
097: }
098:
099: //-------------------------------------
100: /**
101: *
102: * Gets the value of the index
103: **/
104: Object evaluateIndex(VariableResolver pResolver,
105: FunctionMapper functions, Logger pLogger)
106: throws ELException {
107: return mName;
108: }
109:
110: //-------------------------------------
111: /**
112: *
113: * Returns the operator symbol
114: **/
115: String getOperatorSymbol() {
116: return ".";
117: }
118:
119: //-------------------------------------
120: // ValueSuffix methods
121: //-------------------------------------
122: /**
123: *
124: * Returns the expression in the expression language syntax
125: **/
126: public String getExpressionString() {
127: return "." + StringLiteral.toIdentifierToken(mName);
128: }
129:
130: //-------------------------------------
131: }
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