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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

emptycollectiontest, emptycollectiontest, haschild, haschild, jxpathtestcase, jxpathtestcase, object, object, 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.model;

import java.util.Collections;

import org.apache.commons.jxpath.JXPathContext;
import org.apache.commons.jxpath.JXPathTestCase;

 * Be sure empty lists/sets/arrays work.
 * @author mbenson
 * @version $Revision: 652845 $ $Date: 2008-05-02 12:46:46 -0500 (Fri, 02 May 2008) $
public class EmptyCollectionTest extends JXPathTestCase {
    public static class HasChild {
        private Object child;

         * Construct a new EmptyCollectionTest.HasChild instance.
        public HasChild(Object child) {
            this.child = child;

        public Object getChild() {
            return child;

    public void testEmptyList() {
        assertXPathPointerIterator(JXPathContext.newContext(Collections.EMPTY_LIST), "/*",

    public void testEmptyArray() {
        assertXPathPointerIterator(JXPathContext.newContext(new Object[0]), "/*", list());

    public void testEmptySet() {
        assertXPathPointerIterator(JXPathContext.newContext(Collections.EMPTY_SET), "/*",

    public void testEmptyChildList() {
        assertXPathPointerIterator(JXPathContext.newContext(new HasChild(Collections.EMPTY_LIST)),
                "/child/*", Collections.EMPTY_LIST);

    public void testEmptyChildArray() {
        assertXPathPointerIterator(JXPathContext.newContext(new HasChild(new Object[0])),
                "/child/*", list());

    public void testEmptyChildSet() {
        assertXPathPointerIterator(JXPathContext.newContext(new HasChild(Collections.EMPTY_SET)),
                "/child/*", Collections.EMPTY_SET);

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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