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 ch.boye.httpclientandroidlib.entity;
29 
30 import java.io.ByteArrayInputStream;
31 import java.io.ByteArrayOutputStream;
32 import java.io.IOException;
33 import java.io.InputStream;
34 import java.io.OutputStream;
35 
36 import ch.boye.httpclientandroidlib.util.Args;
37 
38 /**
39  * Entity that delegates the process of content generation
40  * to a {@link ContentProducer}.
41  *
42  * @since 4.0
43  */
44 public class EntityTemplate extends AbstractHttpEntity {
45 
46     private final ContentProducer contentproducer;
47 
EntityTemplate(final ContentProducer contentproducer)48     public EntityTemplate(final ContentProducer contentproducer) {
49         super();
50         this.contentproducer = Args.notNull(contentproducer, "Content producer");
51     }
52 
getContentLength()53     public long getContentLength() {
54         return -1;
55     }
56 
getContent()57     public InputStream getContent() throws IOException {
58         final ByteArrayOutputStream buf = new ByteArrayOutputStream();
59         writeTo(buf);
60         return new ByteArrayInputStream(buf.toByteArray());
61     }
62 
isRepeatable()63     public boolean isRepeatable() {
64         return true;
65     }
66 
writeTo(final OutputStream outstream)67     public void writeTo(final OutputStream outstream) throws IOException {
68         Args.notNull(outstream, "Output stream");
69         this.contentproducer.writeTo(outstream);
70     }
71 
isStreaming()72     public boolean isStreaming() {
73         return false;
74     }
75 
76 }
77