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75 lines
2.6 KiB
Java
75 lines
2.6 KiB
Java
/*
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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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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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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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* under the License.
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* ====================================================================
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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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*
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*/
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package ch.boye.httpclientandroidlib.protocol;
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import java.util.HashMap;
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/**
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* HttpContext represents execution state of an HTTP process. It is a structure
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* that can be used to map an attribute name to an attribute value. Internally
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* HTTP context implementations are usually backed by a {@link HashMap}.
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* <p>
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* The primary purpose of the HTTP context is to facilitate information sharing
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* among various logically related components. HTTP context can be used
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* to store a processing state for one message or several consecutive messages.
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* Multiple logically related messages can participate in a logical session
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* if the same context is reused between consecutive messages.
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*
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* @since 4.0
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*/
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public interface HttpContext {
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/** The prefix reserved for use by HTTP components. "http." */
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public static final String RESERVED_PREFIX = "http.";
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/**
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* Obtains attribute with the given name.
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*
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* @param id the attribute name.
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* @return attribute value, or <code>null</code> if not set.
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*/
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Object getAttribute(String id);
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/**
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* Sets value of the attribute with the given name.
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*
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* @param id the attribute name.
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* @param obj the attribute value.
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*/
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void setAttribute(String id, Object obj);
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/**
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* Removes attribute with the given name from the context.
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*
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* @param id the attribute name.
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* @return attribute value, or <code>null</code> if not set.
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*/
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Object removeAttribute(String id);
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}
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