/*
* 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.http.HttpSession;
import org.apache.commons.jxpath.JXPathException;
/**
* Implementation of the {@link org.apache.commons.jxpath.DynamicPropertyHandler}
* interface that provides access to attributes of a @{link HttpSession}.
*
* @author Dmitri Plotnikov
* @version $Revision: 652845 $ $Date: 2008-05-02 12:46:46 -0500 (Fri, 02 May 2008) $
*/
public class HttpSessionHandler extends ServletContextHandler {
protected void collectPropertyNames(HashSet set, Object bean) {
HttpSessionAndServletContext handle =
(HttpSessionAndServletContext) bean;
super.collectPropertyNames(set, handle.getServletContext());
HttpSession session = handle.getSession();
if (session != null) {
Enumeration e = session.getAttributeNames();
while (e.hasMoreElements()) {
set.add(e.nextElement());
}
}
}
public Object getProperty(Object bean, String property) {
HttpSessionAndServletContext handle =
(HttpSessionAndServletContext) bean;
HttpSession session = handle.getSession();
if (session != null) {
Object object = session.getAttribute(property);
if (object != null) {
return object;
}
}
return super.getProperty(handle.getServletContext(), property);
}
public void setProperty(Object bean, String property, Object value) {
HttpSessionAndServletContext handle =
(HttpSessionAndServletContext) bean;
HttpSession session = handle.getSession();
if (session != null) {
session.setAttribute(property, value);
}
else {
throw new JXPathException("Cannot set session attribute: "
+ "there is no session");
}
}
}
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