/*
    * $Id: StateAwareResponseDelegate.java 1066849 2011-02-03 16:12:39Z apetrelli $
    *
    * 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.tiles.request.portlet.delegate;
  
  import java.io.OutputStream;
  import java.io.PrintWriter;
  import java.io.Writer;
  
  /**
   * A state aware response does not allow to access to the output stream and similar,
   * so it is, essentially, a feature blocker.
   *
   * @version $Rev: 1066849 $ $Date: 2011-02-04 03:12:39 +1100 (Fri, 04 Feb 2011) $
   */
  public class StateAwareResponseDelegate implements ResponseDelegate {
  
      @Override
      public OutputStream getOutputStream() {
          throw new UnsupportedOperationException(
                  "No outputstream available for state-aware response");
      }
  
      @Override
      public PrintWriter getPrintWriter() {
          throw new UnsupportedOperationException(
                  "No outputstream available for state-aware response");
      }
  
      @Override
      public Writer getWriter() {
          throw new UnsupportedOperationException(
                  "No outputstream available for state-aware response");
      }
  
      @Override
      public boolean isResponseCommitted() {
          return false;
      }
  
      @Override
      public void setContentType(String contentType) {
          throw new UnsupportedOperationException(
                  "No outputstream available for state-aware response");
      }
  }