/*
    * ====================================================================
    * 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.hc.core5.http.io.entity;
  
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.OutputStream;
  import java.util.List;
  import java.util.Set;
  
  import org.apache.hc.core5.annotation.Contract;
  import org.apache.hc.core5.annotation.ThreadingBehavior;
  import org.apache.hc.core5.function.Supplier;
  import org.apache.hc.core5.http.Header;
  import org.apache.hc.core5.http.HttpEntity;
  import org.apache.hc.core5.util.Args;
  
  /**
   * Base class for wrapping entities that delegates all calls to the wrapped entity.
   * Implementations can derive from this class and override only those methods that
   * should not be delegated to the wrapped entity.
   *
   * @since 4.0
   */
  @Contract(threading = ThreadingBehavior.IMMUTABLE_CONDITIONAL)
  public class HttpEntityWrapper implements HttpEntity {
  
      /** The wrapped entity. */
      private final HttpEntity wrappedEntity;
  
      /**
       * Creates a new entity wrapper.
       *
       * @param wrappedEntity the entity to wrap.
       */
      public HttpEntityWrapper(final HttpEntity wrappedEntity) {
          super();
          this.wrappedEntity = Args.notNull(wrappedEntity, "Wrapped entity");
      }
  
      @Override
      public boolean isRepeatable() {
          return wrappedEntity.isRepeatable();
      }
  
      @Override
      public boolean isChunked() {
          return wrappedEntity.isChunked();
      }
  
      @Override
      public long getContentLength() {
          return wrappedEntity.getContentLength();
      }
  
      @Override
      public String getContentType() {
          return wrappedEntity.getContentType();
      }
  
      @Override
      public String getContentEncoding() {
          return wrappedEntity.getContentEncoding();
      }
  
      @Override
      public InputStream getContent()
          throws IOException {
          return wrappedEntity.getContent();
      }
  
      @Override
      public void writeTo(final OutputStream outStream)
          throws IOException {
         wrappedEntity.writeTo(outStream);
     }
 
     @Override
     public boolean isStreaming() {
         return wrappedEntity.isStreaming();
     }
 
     @Override
     public Supplier<List<? extends Header>> getTrailers() {
         return wrappedEntity.getTrailers();
     }
 
     @Override
     public Set<String> getTrailerNames() {
         return wrappedEntity.getTrailerNames();
     }
 
     @Override
     public void close() throws IOException {
         wrappedEntity.close();
     }
 
     @Override
     public String toString() {
         return "Wrapper [" + wrappedEntity + "]";
     }
 
 }