001 // Copyright 2006, 2007, 2008, 2009 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.tapestry5.services; 016 017 import java.io.IOException; 018 019 /** 020 * Filter interface for {@link org.apache.tapestry5.services.RequestHandler}. Implementations of this interface may be 021 * contributed into the RequestHandler service configuration. 022 */ 023 public interface RequestFilter 024 { 025 /** 026 * Returns true if the request has been handled, false otherwise. 027 */ 028 boolean service(Request request, Response response, RequestHandler handler) throws IOException; 029 030 }