| /* |
| * 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 |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * 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 $Revision$ $Date$ |
| */ |
| 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()) { |
| set.add(e.nextElement()); |
| } |
| } |
| |
| 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); |
| } |
| } |