1 /* 2 * $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpcore/trunk/module-main/src/main/java/org/apache/http/entity/BufferedHttpEntity.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.ByteArrayInputStream; 35 import java.io.IOException; 36 import java.io.InputStream; 37 import java.io.OutputStream; 38 39 import org.apache.http.HttpEntity; 40 import org.apache.http.util.EntityUtils; 41 42 /** 43 * A wrapping entity that buffers it content if necessary. 44 * The buffered entity is always repeatable. 45 * If the wrapped entity is repeatable itself, calls are passed through. 46 * If the wrapped entity is not repeatable, the content is read into a 47 * buffer once and provided from there as often as required. 48 * 49 * @author <a href="mailto:oleg at ural.ru">Oleg Kalnichevski</a> 50 * 51 * @version $Revision: 496070 $ 52 * 53 * @since 4.0 54 * 55 * @deprecated Please use {@link java.net.URL#openConnection} instead. 56 * Please visit <a href="http://android-developers.blogspot.com/2011/09/androids-http-clients.html">this webpage</a> 57 * for further details. 58 */ 59 @Deprecated 60 public class BufferedHttpEntity extends HttpEntityWrapper { 61 62 private final byte[] buffer; 63 BufferedHttpEntity(final HttpEntity entity)64 public BufferedHttpEntity(final HttpEntity entity) throws IOException { 65 super(entity); 66 if (!entity.isRepeatable() || entity.getContentLength() < 0) { 67 this.buffer = EntityUtils.toByteArray(entity); 68 } else { 69 this.buffer = null; 70 } 71 } 72 getContentLength()73 public long getContentLength() { 74 if (this.buffer != null) { 75 return this.buffer.length; 76 } else { 77 return wrappedEntity.getContentLength(); 78 } 79 } 80 getContent()81 public InputStream getContent() throws IOException { 82 if (this.buffer != null) { 83 return new ByteArrayInputStream(this.buffer); 84 } else { 85 return wrappedEntity.getContent(); 86 } 87 } 88 89 /** 90 * Tells that this entity does not have to be chunked. 91 * 92 * @return <code>false</code> 93 */ isChunked()94 public boolean isChunked() { 95 return (buffer == null) && wrappedEntity.isChunked(); 96 } 97 98 /** 99 * Tells that this entity is repeatable. 100 * 101 * @return <code>true</code> 102 */ isRepeatable()103 public boolean isRepeatable() { 104 return true; 105 } 106 107 writeTo(final OutputStream outstream)108 public void writeTo(final OutputStream outstream) throws IOException { 109 if (outstream == null) { 110 throw new IllegalArgumentException("Output stream may not be null"); 111 } 112 if (this.buffer != null) { 113 outstream.write(this.buffer); 114 } else { 115 wrappedEntity.writeTo(outstream); 116 } 117 } 118 119 120 // non-javadoc, see interface HttpEntity isStreaming()121 public boolean isStreaming() { 122 return (buffer == null) && wrappedEntity.isStreaming(); 123 } 124 125 } // class BufferedHttpEntity 126