001// Copyright 2005 The Apache Software Foundation
002//
003// Licensed under the Apache License, Version 2.0 (the "License");
004// you may not use this file except in compliance with the License.
005// You may obtain a copy of the License at
006//
007//     http://www.apache.org/licenses/LICENSE-2.0
008//
009// Unless required by applicable law or agreed to in writing, software
010// distributed under the License is distributed on an "AS IS" BASIS,
011// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012// See the License for the specific language governing permissions and
013// limitations under the License.
014
015package org.apache.tapestry.listener;
016
017import org.apache.tapestry.IRequestCycle;
018
019/**
020 * An object, used by a {@link org.apache.tapestry.listener.ListenerMap}, to match requests
021 * (possibly with service parameters) to methods (possibly with arguments). Given a request, a
022 * (possibly null or empty) array of service parameters, and a target object (and its set of public
023 * void methods), the mapping will search for the mostly likely mapping. In order:
024 * <ul>
025 * <li>public void method(params) (where the method takes the same number of parameters as there
026 * are service parameters)
027 * <li>public void method(IRequestCycle, params)
028 * <li>public void method()
029 * <li>public void method(IRequestCycle)
030 * </ul>
031 * 
032 * @author Howard M. Lewis Ship
033 * @since 4.0
034 */
035public interface ListenerMethodInvoker
036{
037    public void invokeListenerMethod(Object target, IRequestCycle cycle);
038}