1 /* 2 * $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpcore/trunk/module-main/src/main/java/org/apache/http/entity/EntityTemplate.java $ 3 * $Revision: 496070 $ 4 * $Date: 2007-01-14 04:18:34 -0800 (Sun, 14 Jan 2007) $ 5 * 6 * ==================================================================== 7 * Licensed to the Apache Software Foundation (ASF) under one 8 * or more contributor license agreements. See the NOTICE file 9 * 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 EntityTemplate(final ContentProducer contentproducer)52 public EntityTemplate(final ContentProducer contentproducer) { 53 super(); 54 if (contentproducer == null) { 55 throw new IllegalArgumentException("Content producer may not be null"); 56 } 57 this.contentproducer = contentproducer; 58 } 59 getContentLength()60 public long getContentLength() { 61 return -1; 62 } 63 getContent()64 public InputStream getContent() { 65 throw new UnsupportedOperationException("Entity template does not implement getContent()"); 66 } 67 isRepeatable()68 public boolean isRepeatable() { 69 return true; 70 } 71 writeTo(final OutputStream outstream)72 public void writeTo(final OutputStream outstream) throws IOException { 73 if (outstream == null) { 74 throw new IllegalArgumentException("Output stream may not be null"); 75 } 76 this.contentproducer.writeTo(outstream); 77 } 78 isStreaming()79 public boolean isStreaming() { 80 return true; 81 } 82 consumeContent()83 public void consumeContent() throws IOException { 84 } 85 86 } 87