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 015package org.apache.tapestry5.internal.services; 016 017import org.apache.tapestry5.services.*; 018 019import java.io.IOException; 020 021/** 022 * Dispatches incoming requests for render requests. Render requests consist of either just a logical page name (case 023 * insensitive) or a logical page name plus additional context. Because of this structure, it take a little bit of work 024 * to identify the split point between the page name and the context. 025 */ 026public class PageRenderDispatcher implements Dispatcher 027{ 028 private final ComponentRequestHandler componentRequestHandler; 029 030 private final ComponentEventLinkEncoder linkEncoder; 031 032 public PageRenderDispatcher(ComponentRequestHandler componentRequestHandler, ComponentEventLinkEncoder linkEncoder) 033 { 034 this.componentRequestHandler = componentRequestHandler; 035 this.linkEncoder = linkEncoder; 036 } 037 038 public boolean dispatch(Request request, final Response response) throws IOException 039 { 040 041 PageRenderRequestParameters parameters = linkEncoder.decodePageRenderRequest(request); 042 043 if (parameters == null) return false; 044 045 componentRequestHandler.handlePageRender(parameters); 046 047 return true; 048 } 049}