01: /*
02: * $HeadURL: https://svn.apache.org/repos/asf/httpcomponents/httpcore/tags/4.0-beta1/module-main/src/main/java/org/apache/http/entity/EntityTemplate.java $
03: * $Revision: 496070 $
04: * $Date: 2007-01-14 13:18:34 +0100 (Sun, 14 Jan 2007) $
05: *
06: * ====================================================================
07: * Licensed to the Apache Software Foundation (ASF) under one
08: * or more contributor license agreements. See the NOTICE file
09: * distributed with this work for additional information
10: * regarding copyright ownership. The ASF licenses this file
11: * to you under the Apache License, Version 2.0 (the
12: * "License"); you may not use this file except in compliance
13: * with the License. You may obtain a copy of the License at
14: *
15: * http://www.apache.org/licenses/LICENSE-2.0
16: *
17: * Unless required by applicable law or agreed to in writing,
18: * software distributed under the License is distributed on an
19: * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
20: * KIND, either express or implied. See the License for the
21: * specific language governing permissions and limitations
22: * under the License.
23: * ====================================================================
24: *
25: * This software consists of voluntary contributions made by many
26: * individuals on behalf of the Apache Software Foundation. For more
27: * information on the Apache Software Foundation, please see
28: * <http://www.apache.org/>.
29: *
30: */
31:
32: package org.apache.http.entity;
33:
34: import java.io.IOException;
35: import java.io.InputStream;
36: import java.io.OutputStream;
37:
38: /**
39: * Entity that delegates the process of content generation to an abstract
40: * content producer.
41: *
42: * @author <a href="mailto:oleg at ural.ru">Oleg Kalnichevski</a>
43: *
44: * @version $Revision: 496070 $
45: *
46: * @since 4.0
47: */
48: public class EntityTemplate extends AbstractHttpEntity {
49:
50: private final ContentProducer contentproducer;
51:
52: public EntityTemplate(final ContentProducer contentproducer) {
53: super ();
54: if (contentproducer == null) {
55: throw new IllegalArgumentException(
56: "Content producer may not be null");
57: }
58: this .contentproducer = contentproducer;
59: }
60:
61: public long getContentLength() {
62: return -1;
63: }
64:
65: public InputStream getContent() {
66: throw new UnsupportedOperationException(
67: "Entity template does not implement getContent()");
68: }
69:
70: public boolean isRepeatable() {
71: return true;
72: }
73:
74: public void writeTo(final OutputStream outstream)
75: throws IOException {
76: if (outstream == null) {
77: throw new IllegalArgumentException(
78: "Output stream may not be null");
79: }
80: this .contentproducer.writeTo(outstream);
81: }
82:
83: public boolean isStreaming() {
84: return true;
85: }
86:
87: public void consumeContent() throws IOException {
88: }
89:
90: }
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