Source code: org/apache/http/entity/HttpEntityWrapper.java
1 /*
2 * $HeadURL: https://svn.apache.org/repos/asf/jakarta/httpcomponents/httpcore/tags/4.0-alpha2/src/java/org/apache/http/entity/HttpEntityWrapper.java $
3 * $Revision: 374920 $
4 * $Date: 2006-02-04 21:28:25 +0100 (Sat, 04 Feb 2006) $
5 *
6 * ====================================================================
7 *
8 * Copyright 1999-2006 The Apache Software Foundation
9 *
10 * Licensed under the Apache License, Version 2.0 (the "License");
11 * you may not use this file except in compliance with the License.
12 * You may obtain a copy of the License at
13 *
14 * http://www.apache.org/licenses/LICENSE-2.0
15 *
16 * Unless required by applicable law or agreed to in writing, software
17 * distributed under the License is distributed on an "AS IS" BASIS,
18 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
19 * See the License for the specific language governing permissions and
20 * limitations under the License.
21 * ====================================================================
22 *
23 * This software consists of voluntary contributions made by many
24 * individuals on behalf of the Apache Software Foundation. For more
25 * information on the Apache Software Foundation, please see
26 * <http://www.apache.org/>.
27 *
28 */
29
30 package org.apache.http.entity;
31
32 import java.io.IOException;
33 import java.io.InputStream;
34 import java.io.OutputStream;
35
36 import org.apache.http.Header;
37 import org.apache.http.HttpEntity;
38
39 /**
40 * Base class for wrapping entities.
41 * Keeps a {@link #wrappedEntity wrappedEntity} and delegates all
42 * calls to it. Implementations of wrapping entities can derive
43 * from this class and need to override only those methods that
44 * should not be delegated to the wrapped entity.
45 *
46 * @version $Revision: 374920 $
47 *
48 * @since 4.0
49 */
50 public class HttpEntityWrapper implements HttpEntity {
51
52 /** The wrapped entity. */
53 protected HttpEntity wrappedEntity;
54
55 /**
56 * Creates a new entity wrapper.
57 *
58 * @param wrapped the entity to wrap
59 */
60 public HttpEntityWrapper(HttpEntity wrapped) {
61 super();
62
63 if (wrapped == null) {
64 throw new IllegalArgumentException
65 ("wrapped entity must not be null");
66 }
67 wrappedEntity = wrapped;
68
69 } // constructor
70
71
72 public boolean isRepeatable() {
73 return wrappedEntity.isRepeatable();
74 }
75
76 public boolean isChunked() {
77 return wrappedEntity.isChunked();
78 }
79
80 public long getContentLength() {
81 return wrappedEntity.getContentLength();
82 }
83
84 public Header getContentType() {
85 return wrappedEntity.getContentType();
86 }
87
88 public Header getContentEncoding() {
89 return wrappedEntity.getContentEncoding();
90 }
91
92 public InputStream getContent()
93 throws IOException {
94 return wrappedEntity.getContent();
95 }
96
97 public void writeTo(OutputStream outstream)
98 throws IOException {
99 wrappedEntity.writeTo(outstream);
100 }
101
102 public boolean isStreaming() {
103 return wrappedEntity.isStreaming();
104 }
105
106 public void consumeContent()
107 throws IOException {
108 wrappedEntity.consumeContent();
109 }
110
111 } // class HttpEntityWrapper