/*
* 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.jsp.PageContext;
import org.apache.commons.jxpath.DynamicPropertyHandler;
/**
* Implementation of the {@link DynamicPropertyHandler} interface that provides
* access to attributes of a {@link PageContext} in all scopes.
*
* @author Dmitri Plotnikov
* @version $Revision: 668329 $ $Date: 2008-06-16 16:59:48 -0500 (Mon, 16 Jun 2008) $
*/
public class PageContextHandler implements DynamicPropertyHandler {
public String[] getPropertyNames(Object pageContext) {
HashSet list = new HashSet();
Enumeration e =
((PageContext) pageContext).getAttributeNamesInScope(
PageContext.PAGE_SCOPE);
while (e.hasMoreElements()) {
list.add(e.nextElement());
}
e =
((PageContext) pageContext).getAttributeNamesInScope(
PageContext.REQUEST_SCOPE);
while (e.hasMoreElements()) {
list.add(e.nextElement());
}
e =
((PageContext) pageContext).getAttributeNamesInScope(
PageContext.SESSION_SCOPE);
while (e.hasMoreElements()) {
list.add(e.nextElement());
}
e =
((PageContext) pageContext).getAttributeNamesInScope(
PageContext.APPLICATION_SCOPE);
while (e.hasMoreElements()) {
list.add(e.nextElement());
}
return (String[]) list.toArray(new String[list.size()]);
}
/**
* Returns <code>pageContext.findAttribute(property)</code>.
* @param pageContext to search
* @param property name
* @return Object value
*/
public Object getProperty(Object pageContext, String property) {
return ((PageContext) pageContext).findAttribute(property);
}
public void setProperty(Object pageContext, String property, Object value) {
((PageContext) pageContext).setAttribute(
property,
value,
PageContext.PAGE_SCOPE);
}
}
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