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/*
* $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpcore/trunk/module-main/src/main/java/org/apache/http/protocol/BasicHttpContext.java $
* $Revision: 654882 $
* $Date: 2008-05-09 09:58:59 -0700 (Fri, 09 May 2008) $
*
* ====================================================================
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
*/
package org.apache.http.protocol;
import java.util.HashMap;
import java.util.Map;
/**
* Default implementation of the {@link HttpContext HttpContext}.
*
* @author <a href="mailto:oleg at ural.ru">Oleg Kalnichevski</a>
*
* @version $Revision: 654882 $
*
* @since 4.0
*/
public class BasicHttpContext implements HttpContext {
private final HttpContext parentContext;
private Map map = null;
public BasicHttpContext() {
this(null);
}
public BasicHttpContext(final HttpContext parentContext) {
super();
this.parentContext = parentContext;
}
public Object getAttribute(final String id) {
if (id == null) {
throw new IllegalArgumentException("Id may not be null");
}
Object obj = null;
if (this.map != null) {
obj = this.map.get(id);
}
if (obj == null && this.parentContext != null) {
obj = this.parentContext.getAttribute(id);
}
return obj;
}
public void setAttribute(final String id, final Object obj) {
if (id == null) {
throw new IllegalArgumentException("Id may not be null");
}
if (this.map == null) {
this.map = new HashMap();
}
this.map.put(id, obj);
}
public Object removeAttribute(final String id) {
if (id == null) {
throw new IllegalArgumentException("Id may not be null");
}
if (this.map != null) {
return this.map.remove(id);
} else {
return null;
}
}
}
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