Source code: org/apache/http/entity/EntityTemplate.java
1 /*
2 * $HeadURL: https://svn.apache.org/repos/asf/jakarta/httpcomponents/httpcore/tags/4.0-alpha2/src/java/org/apache/http/entity/EntityTemplate.java $
3 * $Revision: 408072 $
4 * $Date: 2006-05-20 20:48:34 +0200 (Sat, 20 May 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 /**
37 * Entity that delegates the process of content generation to an abstract
38 * content producer.
39 *
40 * @author <a href="mailto:oleg at ural.ru">Oleg Kalnichevski</a>
41 *
42 * @version $Revision: 408072 $
43 *
44 * @since 4.0
45 */
46 public class EntityTemplate extends AbstractHttpEntity {
47
48 private final ContentProducer contentproducer;
49
50 public EntityTemplate(final ContentProducer contentproducer) {
51 super();
52 if (contentproducer == null) {
53 throw new IllegalArgumentException("Content producer may not be null");
54 }
55 this.contentproducer = contentproducer;
56 }
57
58 public long getContentLength() {
59 return -1;
60 }
61
62 public InputStream getContent() {
63 throw new UnsupportedOperationException("Entity template does not implement getContent()");
64 }
65
66 public boolean isRepeatable() {
67 return true;
68 }
69
70 public void writeTo(final OutputStream outstream) throws IOException {
71 if (outstream == null) {
72 throw new IllegalArgumentException("Output stream may not be null");
73 }
74 this.contentproducer.writeTo(outstream);
75 }
76
77 public boolean isStreaming() {
78 return true;
79 }
80
81 public void consumeContent() throws IOException {
82 }
83
84 }