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1   /*
2    * ====================================================================
3    * Licensed to the Apache Software Foundation (ASF) under one
4    * or more contributor license agreements.  See the NOTICE file
5    * distributed with this work for additional information
6    * regarding copyright ownership.  The ASF licenses this file
7    * to you under the Apache License, Version 2.0 (the
8    * "License"); you may not use this file except in compliance
9    * with the License.  You may obtain a copy of the License at
10   *
11   *   http://www.apache.org/licenses/LICENSE-2.0
12   *
13   * Unless required by applicable law or agreed to in writing,
14   * software distributed under the License is distributed on an
15   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16   * KIND, either express or implied.  See the License for the
17   * specific language governing permissions and limitations
18   * under the License.
19   * ====================================================================
20   *
21   * This software consists of voluntary contributions made by many
22   * individuals on behalf of the Apache Software Foundation.  For more
23   * information on the Apache Software Foundation, please see
24   * <http://www.apache.org/>.
25   *
26   */
27  
28  package org.apache.http.nio.entity;
29  
30  import org.apache.http.Header;
31  import org.apache.http.HttpEntity;
32  import org.apache.http.annotation.NotThreadSafe;
33  import org.apache.http.entity.BasicHttpEntity;
34  import org.apache.http.nio.util.ContentInputBuffer;
35  
36  /**
37   * HTTP entity wrapper whose content is provided by a
38   * {@link ContentInputBuffer}.
39   *
40   * @since 4.0
41   */
42  @NotThreadSafe
43  public class ContentBufferEntity extends BasicHttpEntity {
44  
45      private HttpEntity wrappedEntity;
46  
47      /**
48       * Creates new instance of ContentBufferEntity.
49       *
50       * @param entity the original entity.
51       * @param buffer the content buffer.
52       */
53      public ContentBufferEntity(final HttpEntity entity, final ContentInputBuffer buffer) {
54          super();
55          if (entity == null) {
56              throw new IllegalArgumentException("HTTP entity may not be null");
57          }
58          this.wrappedEntity = entity;
59          setContent(new ContentInputStream(buffer));
60      }
61  
62      @Override
63      public boolean isChunked() {
64          return this.wrappedEntity.isChunked();
65      }
66  
67      @Override
68      public long getContentLength() {
69          return this.wrappedEntity.getContentLength();
70      }
71  
72      @Override
73      public Header getContentType() {
74          return this.wrappedEntity.getContentType();
75      }
76  
77      @Override
78      public Header getContentEncoding() {
79          return this.wrappedEntity.getContentEncoding();
80      }
81  
82  }