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 org.apache.http.protocol; 29 30 import org.apache.http.util.Args; 31 32 /** 33 * {@link HttpContext} implementation that delegates resolution of an attribute 34 * to the given default {@link HttpContext} instance if the attribute is not 35 * present in the local one. The state of the local context can be mutated, 36 * whereas the default context is treated as read-only. 37 * 38 * @since 4.0 39 * 40 * @deprecated (4.3) no longer used. 41 */ 42 @Deprecated 43 public final class DefaultedHttpContext implements HttpContext { 44 45 private final HttpContext local; 46 private final HttpContext defaults; 47 48 public DefaultedHttpContext(final HttpContextext.html#HttpContext">HttpContext local, final HttpContext defaults) { 49 super(); 50 this.local = Args.notNull(local, "HTTP context"); 51 this.defaults = defaults; 52 } 53 54 @Override 55 public Object getAttribute(final String id) { 56 final Object obj = this.local.getAttribute(id); 57 if (obj == null) { 58 return this.defaults.getAttribute(id); 59 } 60 return obj; 61 } 62 63 @Override 64 public Object removeAttribute(final String id) { 65 return this.local.removeAttribute(id); 66 } 67 68 @Override 69 public void setAttribute(final String id, final Object obj) { 70 this.local.setAttribute(id, obj); 71 } 72 73 public HttpContext getDefaults() { 74 return this.defaults; 75 } 76 77 @Override 78 public String toString() { 79 final StringBuilder buf = new StringBuilder(); 80 buf.append("[local: ").append(this.local); 81 buf.append("defaults: ").append(this.defaults); 82 buf.append("]"); 83 return buf.toString(); 84 } 85 86 }