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* $HeadURL: https://svn.apache.org/repos/asf/httpcomponents/httpcore/tags/4.0.1/httpcore/src/main/java/org/apache/http/protocol/BasicHttpContext.java $
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* $Date: 2009-02-14 18:12:18 +0100 (Sat, 14 Feb 2009) $
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* ====================================================================
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* ====================================================================
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* This software consists of voluntary contributions made by many
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* individuals on behalf of the Apache Software Foundation. For more
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* information on the Apache Software Foundation, please see
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* <http://www.apache.org/>.
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package org.apache.http.protocol;
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import java.util.HashMap;
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* Default implementation of {@link HttpContext}.
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* Please note methods of this class are not synchronized and therefore may
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* be threading unsafe.
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* @version $Revision: 744532 $
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public class BasicHttpContext implements HttpContext {
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private final HttpContext parentContext;
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private Map map = null;
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public BasicHttpContext() {
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public BasicHttpContext(final HttpContext parentContext) {
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this.parentContext = parentContext;
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public Object getAttribute(final String id) {
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throw new IllegalArgumentException("Id may not be null");
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if (this.map != null) {
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obj = this.map.get(id);
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if (obj == null && this.parentContext != null) {
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obj = this.parentContext.getAttribute(id);
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public void setAttribute(final String id, final Object obj) {
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throw new IllegalArgumentException("Id may not be null");
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if (this.map == null) {
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this.map = new HashMap();
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this.map.put(id, obj);
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public Object removeAttribute(final String id) {
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throw new IllegalArgumentException("Id may not be null");
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if (this.map != null) {
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return this.map.remove(id);