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. 014 015 package org.apache.tapestry.listener; 016 017 import 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 */ 035 public interface ListenerMethodInvoker 036 { 037 public void invokeListenerMethod(Object target, IRequestCycle cycle); 038 }