001/* 002 * Copyright 2010 Anyware Services 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016package org.ametys.web.repository.page.generators; 017 018import java.io.IOException; 019 020import org.apache.avalon.framework.service.ServiceException; 021import org.apache.avalon.framework.service.ServiceManager; 022import org.apache.cocoon.ProcessingException; 023import org.apache.cocoon.environment.ObjectModelHelper; 024import org.apache.cocoon.environment.Request; 025import org.apache.cocoon.generation.ServiceableGenerator; 026import org.apache.cocoon.xml.XMLUtils; 027import org.xml.sax.SAXException; 028 029import org.ametys.plugins.repository.AmetysObjectIterable; 030import org.ametys.plugins.repository.AmetysObjectResolver; 031import org.ametys.web.repository.page.Page; 032import org.ametys.web.repository.page.PagesContainer; 033 034/** 035 * SAX the child pages id of a page 036 */ 037public class ChildrenPagesIdGenerator extends ServiceableGenerator 038{ 039 /** Ametys object resolver. */ 040 protected AmetysObjectResolver _resolver; 041 042 @Override 043 public void service(ServiceManager serviceManager) throws ServiceException 044 { 045 super.service(serviceManager); 046 _resolver = (AmetysObjectResolver) serviceManager.lookup(AmetysObjectResolver.ROLE); 047 } 048 049 @Override 050 public void generate() throws IOException, SAXException, ProcessingException 051 { 052 Request request = ObjectModelHelper.getRequest(objectModel); 053 054 String id = request.getParameter("id"); 055 PagesContainer composite = _resolver.resolveById(id); 056 057 contentHandler.startDocument(); 058 XMLUtils.startElement(contentHandler, "child-pages"); 059 060 if (!(composite instanceof Page)) 061 { 062 throw new IllegalArgumentException("Can not send page information on node '" + id + "', because it is a '" + composite.getClass() + "' that is not an instance of Page"); 063 } 064 else 065 { 066 _saxChildPages ((Page) composite); 067 } 068 069 XMLUtils.endElement(contentHandler, "child-pages"); 070 contentHandler.endDocument(); 071 } 072 073 074 private void _saxChildPages (Page page) throws SAXException 075 { 076 AmetysObjectIterable<? extends Page> childPages = page.getChildrenPages(); 077 078 for (Page childPage : childPages) 079 { 080 XMLUtils.createElement(contentHandler, "page", childPage.getId()); 081 _saxChildPages (childPage); 082 } 083 } 084 085}