/*
 *  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.
 */

package org.apache.coyote;


/**
 * Adapter. This represents the entry point in a coyote-based servlet container.
 *
 *
 * @author Remy Maucherat
 * @see ProtocolHandler
 */
public interface Adapter {


    /** 
     * Call the service method, and notify all listeners
     *
     * @exception Exception if an error happens during handling of
     *   the request. Common errors are:
     *   <ul><li>IOException if an input/output error occurs and we are
     *   processing an included servlet (otherwise it is swallowed and
     *   handled by the top level error handler mechanism)
     *       <li>ServletException if a servlet throws an exception and
     *  we are processing an included servlet (otherwise it is swallowed
     *  and handled by the top level error handler mechanism)
     *  </ul>
     *  Tomcat should be able to handle and log any other exception ( including
     *  runtime exceptions )
     */
    public void service(Request req, Response res)
	throws Exception;


}