/*
    * 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.servlet;
  
  import java.util.Enumeration;
  import java.util.Map;
  
  import javax.servlet.ServletRequest;
  
  import org.apache.myfaces.util.AbstractAttributeMap;
  
  
  /**
   * ServletRequest attributes Map.
   * 
   * @author Anton Koinov (latest modification by $Author$)
   * @version $Revision$ $Date$
   */
  public final class RequestMap extends AbstractAttributeMap<Object>
  {
      final ServletRequest _servletRequest;
  
      RequestMap(final ServletRequest servletRequest)
      {
          _servletRequest = servletRequest;
      }
  
      @Override
      protected Object getAttribute(final String key)
      {
          return _servletRequest.getAttribute(key);
      }
  
      @Override
      protected void setAttribute(final String key, final Object value)
      {
          _servletRequest.setAttribute(key, value);
      }
  
      @Override
      protected void removeAttribute(final String key)
      {
          _servletRequest.removeAttribute(key);
      }
  
      @Override
      @SuppressWarnings("unchecked")
      protected Enumeration<String> getAttributeNames()
      {
          return _servletRequest.getAttributeNames();
      }
  
      @Override
      public void putAll(final Map<? extends String, ? extends Object> t)
      {
          throw new UnsupportedOperationException();
      }
  
  
      @Override
      public void clear()
      {
          throw new UnsupportedOperationException();
      }    
  }