1 /* 2 * $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpcore/trunk/module-main/src/main/java/org/apache/http/entity/HttpEntityWrapper.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 import org.apache.http.Header; 39 import org.apache.http.HttpEntity; 40 41 /** 42 * Base class for wrapping entities. 43 * Keeps a {@link #wrappedEntity wrappedEntity} and delegates all 44 * calls to it. Implementations of wrapping entities can derive 45 * from this class and need to override only those methods that 46 * should not be delegated to the wrapped entity. 47 * 48 * @version $Revision: 496070 $ 49 * 50 * @since 4.0 51 */ 52 public class HttpEntityWrapper implements HttpEntity { 53 54 /** The wrapped entity. */ 55 protected HttpEntity wrappedEntity; 56 57 /** 58 * Creates a new entity wrapper. 59 * 60 * @param wrapped the entity to wrap 61 */ HttpEntityWrapper(HttpEntity wrapped)62 public HttpEntityWrapper(HttpEntity wrapped) { 63 super(); 64 65 if (wrapped == null) { 66 throw new IllegalArgumentException 67 ("wrapped entity must not be null"); 68 } 69 wrappedEntity = wrapped; 70 71 } // constructor 72 73 isRepeatable()74 public boolean isRepeatable() { 75 return wrappedEntity.isRepeatable(); 76 } 77 isChunked()78 public boolean isChunked() { 79 return wrappedEntity.isChunked(); 80 } 81 getContentLength()82 public long getContentLength() { 83 return wrappedEntity.getContentLength(); 84 } 85 getContentType()86 public Header getContentType() { 87 return wrappedEntity.getContentType(); 88 } 89 getContentEncoding()90 public Header getContentEncoding() { 91 return wrappedEntity.getContentEncoding(); 92 } 93 getContent()94 public InputStream getContent() 95 throws IOException { 96 return wrappedEntity.getContent(); 97 } 98 writeTo(OutputStream outstream)99 public void writeTo(OutputStream outstream) 100 throws IOException { 101 wrappedEntity.writeTo(outstream); 102 } 103 isStreaming()104 public boolean isStreaming() { 105 return wrappedEntity.isStreaming(); 106 } 107 consumeContent()108 public void consumeContent() 109 throws IOException { 110 wrappedEntity.consumeContent(); 111 } 112 113 } // class HttpEntityWrapper 114