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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

default_property_count, dynamicpropertyhandler, enumeration, hashset, hashset, object, object, servlet, servletcontext, servletcontext, servletcontexthandler, string, string, 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.servlet;

import java.util.Enumeration;
import java.util.HashSet;

import javax.servlet.ServletContext;

import org.apache.commons.jxpath.DynamicPropertyHandler;

 * Implementation of the {@link DynamicPropertyHandler} interface that provides
 * access to attributes of a {@link ServletContext}.
 * @author Dmitri Plotnikov
 * @version $Revision: 652845 $ $Date: 2008-05-02 12:46:46 -0500 (Fri, 02 May 2008) $
public class ServletContextHandler implements DynamicPropertyHandler {

    private static final int DEFAULT_PROPERTY_COUNT = 16;

    public String[] getPropertyNames(Object context) {
        HashSet list = new HashSet(DEFAULT_PROPERTY_COUNT);
        collectPropertyNames(list, context);
        return (String[]) list.toArray(new String[list.size()]);

     * Collect the property names from bean, storing in set.
     * @param set destination
     * @param bean to read
    protected void collectPropertyNames(HashSet set, Object bean) {
        Enumeration e = ((ServletContext) bean).getAttributeNames();
        while (e.hasMoreElements()) {

    public Object getProperty(Object context, String property) {
        return ((ServletContext) context).getAttribute(property);

    public void setProperty(Object context, String property, Object value) {
        ((ServletContext) context).setAttribute(property, value);

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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