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Commons JXPath example source code file (

This example Commons JXPath source code file ( is included in the "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Commons JXPath tags/keywords

expression, expression, object, object, qname, qname, string, variablereference, variablereference

The Commons JXPath source code

 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * See the License for the specific language governing permissions and
 * limitations under the License.
package org.apache.commons.jxpath.ri.compiler;

import org.apache.commons.jxpath.ri.QName;
import org.apache.commons.jxpath.ri.EvalContext;

 * An element of the compile tree holding a variable reference.
 * @author Dmitri Plotnikov
 * @version $Revision: 652845 $ $Date: 2008-05-02 12:46:46 -0500 (Fri, 02 May 2008) $
public class VariableReference extends Expression {

    private QName varName;

     * Create a new VariableReference.
     * @param varName variable name
    public VariableReference(QName varName) {
        this.varName = varName;

     * Get the variable name.
     * @return QName
    public QName getVariableName() {
        return varName;

    public String toString() {
        return "$" + varName;

    public boolean isContextDependent() {
        return false;

    public boolean computeContextDependent() {
        return false;

    public Object compute(EvalContext context) {
        return computeValue(context);

     * Returns the value of the variable.
     * @param context EvalContext against which to compute the variable's value.
     * @return Object
    public Object computeValue(EvalContext context) {
        return context.getRootContext().getVariableContext(varName);

Other Commons JXPath examples (source code examples)

Here is a short list of links related to this Commons JXPath source code file:

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