/*

  * 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.myfaces.context.portlet;

 import java.util.Enumeration;

 import java.util.Map;

 import javax.portlet.PortletRequest;

 import org.apache.myfaces.util.AbstractAttributeMap;

 /**

  * PortletRequest headers as Map.

  *

  * @author  Stan Silvert (latest modification by $Author: skitching $)

  * @version $Revision: 684459 $ $Date: 2008-08-10 06:13:56 -0500 (Sun, 10 Aug 2008) $

  */

 public class RequestHeaderMap extends AbstractAttributeMap<String>

 {

     private final PortletRequest _portletRequest;

     RequestHeaderMap(PortletRequest portletRequest)

     {

         _portletRequest = portletRequest;

     }

     @Override

     protected String getAttribute(String key)

     {

         return _portletRequest.getProperty(key);

     }

     @Override

     protected void setAttribute(String key, String value)

     {

         throw new UnsupportedOperationException(

             "Cannot set PortletRequest property");

     }

     @Override

     protected void removeAttribute(String key)

     {

         throw new UnsupportedOperationException(

             "Cannot remove PortletRequest property");

     }

     @Override

     @SuppressWarnings("unchecked")

     protected Enumeration<String> getAttributeNames()

     {

         return _portletRequest.getPropertyNames();

     }

     @Override

     public void putAll(Map t)

     {

         throw new UnsupportedOperationException();

     }

     @Override

     public void clear()

     {

         throw new UnsupportedOperationException();

     }    

 }