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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

arraylist, basicnodeset, boolean, collection, collection, expressioncontext, jxpathcontext, nestedtestbean, nestedtestbean, object, string, string, testfunctions, testfunctions, util

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 java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.Map;

import org.apache.commons.jxpath.BasicNodeSet;
import org.apache.commons.jxpath.ExpressionContext;
import org.apache.commons.jxpath.JXPathContext;
import org.apache.commons.jxpath.NestedTestBean;
import org.apache.commons.jxpath.Pointer;
import org.apache.commons.jxpath.NodeSet;

 * @author Dmitri Plotnikov
 * @version $Revision: 495033 $ $Date: 2007-01-10 17:15:33 -0600 (Wed, 10 Jan 2007) $
public class TestFunctions {

    private int foo;
    private String bar;

    public TestFunctions() {

    public TestFunctions(int foo, String bar) { = foo; = bar;

    public TestFunctions(ExpressionContext context, String bar) { =
            ((Number) context.getContextNodePointer().getValue()).intValue(); = bar;
    public TestFunctions(int foo, Object object, boolean another) { = foo;
        bar = String.valueOf(object);

    public int getFoo() {
        return foo;

    public String getBar() {
        return bar;

    public void doit() {

    public TestFunctions setFooAndBar(int foo, String bar) { = foo; = bar;
        return this;

    public static TestFunctions build(int foo, String bar) {
        return new TestFunctions(foo, bar);

    public String toString() {
        return "foo=" + foo + "; bar=" + bar;

    public static String path(ExpressionContext context) {
        return context.getContextNodePointer().asPath();

    public String instancePath(ExpressionContext context) {
        return context.getContextNodePointer().asPath();

    public String pathWithSuffix(ExpressionContext context, String suffix) {
        return context.getContextNodePointer().asPath() + suffix;

    public String className(
        ExpressionContext context,
        ExpressionContext child) 
        return context.getContextNodePointer().asPath();

     * Returns true if the current node in the current context is a map
    public static boolean isMap(ExpressionContext context) {
        Pointer ptr = context.getContextNodePointer();
        return ptr == null ? false : (ptr.getValue() instanceof Map);

     * Returns the number of nodes in the context that is passed as
     * the first argument.
    public static int count(ExpressionContext context, Collection col) {
        for (Iterator iter = col.iterator(); iter.hasNext();) {
            Object element =;
            if (!(element instanceof String)) {
                throw new RuntimeException("Invalid argument");
        return col.size();
    public static int countPointers(NodeSet nodeSet) {
        return nodeSet.getPointers().size();
    public static String string(String string) {
        return string;
    public static Collection collection() {
        ArrayList list = new ArrayList();
        list.add(new NestedTestBean("foo"));
        list.add(new NestedTestBean("bar"));
        return list;
    public static NodeSet nodeSet(ExpressionContext context) {
        JXPathContext jxpathCtx = context.getJXPathContext();
        BasicNodeSet set = new BasicNodeSet();
        return set;
    public static Collection items(Collection arg) {
        return arg;

    public static Boolean isInstance(Object o, Class c) {
        return c.isInstance(o) ? Boolean.TRUE : Boolean.FALSE;


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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