/*
    * ====================================================================
    * 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.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   *
   */
  
  package org.apache.http.nio.protocol;
  
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.OutputStream;
  import java.nio.ByteBuffer;
  
  import org.apache.http.HttpEntity;
  import org.apache.http.entity.HttpEntityWrapper;
  import org.apache.http.nio.ContentDecoder;
  import org.apache.http.nio.IOControl;
  import org.apache.http.nio.entity.ConsumingNHttpEntity;
  
  /**
   * @deprecated (4.2)
   */
  @Deprecated
  class NullNHttpEntity extends HttpEntityWrapper implements ConsumingNHttpEntity {
  
      private final ByteBuffer buffer;
  
      public NullNHttpEntity(final HttpEntity httpEntity) {
          super(httpEntity);
          this.buffer = ByteBuffer.allocate(2048);
      }
  
      @Override
      public InputStream getContent() throws IOException, UnsupportedOperationException {
          throw new UnsupportedOperationException("Does not support blocking methods");
      }
  
      @Override
      public boolean isStreaming() {
          return true;
      }
  
      @Override
      public void writeTo(final OutputStream out) throws IOException, UnsupportedOperationException {
          throw new UnsupportedOperationException("Does not support blocking methods");
      }
  
      @Override
      public void consumeContent(
              final ContentDecoder decoder,
              final IOControl ioControl) throws IOException {
          int lastRead;
          do {
              buffer.clear();
              lastRead = decoder.read(buffer);
          } while (lastRead > 0);
      }
  
      @Override
      public void finish() {
      }
  
  }