001/* 002 * Copyright 2017 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.plugins.linkdirectory.dynamic; 017 018import java.io.IOException; 019import java.util.Arrays; 020import java.util.List; 021 022import org.apache.avalon.framework.service.ServiceException; 023import org.apache.avalon.framework.service.ServiceManager; 024import org.apache.cocoon.ProcessingException; 025import org.apache.cocoon.environment.ObjectModelHelper; 026import org.apache.cocoon.environment.Request; 027import org.apache.cocoon.generation.ServiceableGenerator; 028import org.apache.cocoon.xml.XMLUtils; 029import org.apache.commons.lang3.StringUtils; 030import org.xml.sax.SAXException; 031 032import org.ametys.core.user.CurrentUserProvider; 033import org.ametys.plugins.linkdirectory.DirectoryHelper; 034import org.ametys.plugins.linkdirectory.Link.LinkStatus; 035import org.ametys.plugins.linkdirectory.repository.DefaultLink; 036 037/** 038 * This generator sax the dynamic information provided by {@link DynamicInformationProvider}s 039 */ 040public class DynamicInformationGenerator extends ServiceableGenerator 041{ 042 private DirectoryHelper _directoryHelper; 043 private DynamicInformationProviderExtensionPoint _dynamicInfoExtensionPoint; 044 private CurrentUserProvider _currentUserProvider; 045 046 @Override 047 public void service(ServiceManager serviceManager) throws ServiceException 048 { 049 super.service(serviceManager); 050 _directoryHelper = (DirectoryHelper) serviceManager.lookup(DirectoryHelper.ROLE); 051 _dynamicInfoExtensionPoint = (DynamicInformationProviderExtensionPoint) serviceManager.lookup(DynamicInformationProviderExtensionPoint.ROLE); 052 _currentUserProvider = (CurrentUserProvider) serviceManager.lookup(CurrentUserProvider.ROLE); 053 } 054 055 @Override 056 public void generate() throws IOException, SAXException, ProcessingException 057 { 058 Request request = ObjectModelHelper.getRequest(objectModel); 059 int maxItems = Integer.valueOf(request.getParameter("maxItems")); 060 061 String[] themeIds = request.getParameter("themes") != null ? request.getParameter("themes").split(",") : new String[0]; 062 String siteName = request.getParameter("site"); 063 String lang = request.getParameter("lang"); 064 065 List<DefaultLink> links = _directoryHelper.getLinks(Arrays.asList(themeIds), _currentUserProvider.getUser(), siteName, lang); 066 067 contentHandler.startDocument(); 068 XMLUtils.startElement(contentHandler, "dynamic-information"); 069 for (DefaultLink defaultLink : links) 070 { 071 if (defaultLink.getStatus() != LinkStatus.BROKEN) 072 { 073 String extensionId = defaultLink.getDynamicInformationProvider(); 074 if (StringUtils.isNotBlank(extensionId)) 075 { 076 DynamicInformationProvider provider = _dynamicInfoExtensionPoint.getExtension(extensionId); 077 if (provider != null) 078 { 079 String linkId = defaultLink.getId(); 080 try 081 { 082 provider.saxDynamicInformation(contentHandler, linkId, siteName, lang, maxItems); 083 } 084 catch (Exception e) 085 { 086 getLogger().error("Unable to sax dynamic information from provider of id '" + provider.getId() + "'", e); 087 } 088 } 089 } 090 } 091 } 092 XMLUtils.endElement(contentHandler, "dynamic-information"); 093 contentHandler.endDocument(); 094 } 095}