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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.protocol;
29  
30  import java.io.IOException;
31  import java.io.InputStream;
32  import java.io.OutputStream;
33  import java.nio.ByteBuffer;
34  
35  import org.apache.http.HttpEntity;
36  import org.apache.http.entity.HttpEntityWrapper;
37  import org.apache.http.nio.ContentDecoder;
38  import org.apache.http.nio.IOControl;
39  import org.apache.http.nio.entity.ConsumingNHttpEntity;
40  
41  /**
42   * @deprecated (4.2)
43   */
44  @Deprecated
45  class NullNHttpEntity extends HttpEntityWrapper implements ConsumingNHttpEntity {
46  
47      private final ByteBuffer buffer;
48  
49      public NullNHttpEntity(final HttpEntity httpEntity) {
50          super(httpEntity);
51          this.buffer = ByteBuffer.allocate(2048);
52      }
53  
54      @Override
55      public InputStream getContent() throws IOException, UnsupportedOperationException {
56          throw new UnsupportedOperationException("Does not support blocking methods");
57      }
58  
59      @Override
60      public boolean isStreaming() {
61          return true;
62      }
63  
64      @Override
65      public void writeTo(OutputStream out) throws IOException, UnsupportedOperationException {
66          throw new UnsupportedOperationException("Does not support blocking methods");
67      }
68  
69      @Override
70      public void consumeContent() throws IOException {
71          finish();
72      }
73  
74      public void consumeContent(
75              final ContentDecoder decoder,
76              final IOControl ioctrl) throws IOException {
77          int lastRead;
78          do {
79              buffer.clear();
80              lastRead = decoder.read(buffer);
81          } while (lastRead > 0);
82      }
83  
84      public void finish() {
85      }
86  
87  }