Java tutorial
/* * ShowTopicForumController.java * * Developed by Medici Archive Project (2010-2012). * * This file is part of DocSources. * * DocSources is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * DocSources is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * * As a special exception, if you link this library with other files to * produce an executable, this library does not by itself cause the * resulting executable to be covered by the GNU General Public License. * This exception does not however invalidate any other reasons why the * executable file might be covered by the GNU General Public License. */ package org.medici.bia.controller.community; import java.util.HashMap; import java.util.HashSet; import java.util.List; import java.util.Map; import java.util.Set; import javax.servlet.http.HttpServletRequest; import org.apache.commons.lang.ObjectUtils; import org.medici.bia.command.community.ShowTopicForumCommand; import org.medici.bia.common.access.ApplicationAccessContainer; import org.medici.bia.common.pagination.DocumentExplorer; import org.medici.bia.common.pagination.Page; import org.medici.bia.common.pagination.PaginationFilter; import org.medici.bia.common.pagination.VolumeExplorer; import org.medici.bia.common.util.CourseUtils; import org.medici.bia.domain.Annotation; import org.medici.bia.domain.Course; import org.medici.bia.domain.CourseTopicOption; import org.medici.bia.domain.Document; import org.medici.bia.domain.ForumPost; import org.medici.bia.domain.ForumTopic; import org.medici.bia.domain.Image; import org.medici.bia.domain.Image.ImageType; import org.medici.bia.domain.User; import org.medici.bia.domain.UserAuthority; import org.medici.bia.exception.ApplicationThrowable; import org.medici.bia.service.community.CommunityService; import org.medici.bia.service.manuscriptviewer.ManuscriptViewerService; import org.medici.bia.service.teaching.TeachingService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.security.core.context.SecurityContextHolder; import org.springframework.security.core.userdetails.UserDetails; import org.springframework.stereotype.Controller; import org.springframework.validation.BindingResult; import org.springframework.web.bind.annotation.ModelAttribute; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.servlet.ModelAndView; /** * Controller to view a specific topic on a forum. * It manages View and request's elaboration process. * * @author Lorenzo Pasquinelli (<a href=mailto:l.pasquinelli@gmail.com>l.pasquinelli@gmail.com</a>) * @author Matteo Doni (<a href=mailto:donimatteo@gmail.com>donimatteo@gmail.com</a>) * */ @Controller @RequestMapping(value = { "/community/ShowTopicForum", "teaching/ShowTopicForum" }) public class ShowTopicForumController { @Autowired private ApplicationAccessContainer applicationAccessContainer; @Autowired private CommunityService communityService; @Autowired private ManuscriptViewerService manuscriptViewerService; @Autowired private TeachingService teachingService; public ApplicationAccessContainer getApplicationAccessContainer() { return applicationAccessContainer; } public void setApplicationAccessContainer(ApplicationAccessContainer applicationAccessContainer) { this.applicationAccessContainer = applicationAccessContainer; } /** * @param communityService the communityService to set */ public void setCommunityService(CommunityService communityService) { this.communityService = communityService; } /** * @param manuscriptViewerService the manuscriptViewerService to set */ public void setManuscriptViewerService(ManuscriptViewerService manuscriptViewerService) { this.manuscriptViewerService = manuscriptViewerService; } /** * @return the communityService */ public CommunityService getCommunityService() { return communityService; } /** * @return the manuscriptViewerService */ public ManuscriptViewerService getManuscriptViewerService() { return manuscriptViewerService; } public TeachingService getTeachingService() { return teachingService; } public void setTeachingService(TeachingService teachingService) { this.teachingService = teachingService; } /** * * @param request * @param model * @return */ @SuppressWarnings("unchecked") @RequestMapping(method = RequestMethod.GET) public ModelAndView setupForm(@ModelAttribute("command") ShowTopicForumCommand command, BindingResult result, HttpServletRequest httpServletRequest) { Map<String, Object> model = new HashMap<String, Object>(0); try { User user = (User) httpServletRequest.getSession().getAttribute("user"); //httpSession.getAttribute("user"); if (user != null) { if (user.getForumJoinedDate() == null) { user = getCommunityService().joinUserOnForum(); httpServletRequest.getSession().setAttribute("user", user); } } // Control to anonymous access if (SecurityContextHolder.getContext().getAuthentication().getPrincipal().getClass().getName() .equals("java.lang.String")) { model.put("account", null); } else { model.put("account", ((UserDetails) SecurityContextHolder.getContext().getAuthentication().getPrincipal()) .getUsername()); } PaginationFilter paginationFilterTopic = new PaginationFilter(); if (command.getPostsForPage() != null) { paginationFilterTopic.setElementsForPage(command.getPostsForPage()); } else { paginationFilterTopic.setElementsForPage(new Integer(10)); command.setPostsForPage(paginationFilterTopic.getElementsForPage()); } if (command.getPostPageNumber() != null) { paginationFilterTopic.setThisPage(command.getPostPageNumber()); } else { paginationFilterTopic.setThisPage(new Integer(1)); command.setPostPageNumber(paginationFilterTopic.getThisPage()); } if (command.getPostPageTotal() != null) { paginationFilterTopic.setPageTotal(command.getPostPageTotal()); } else { paginationFilterTopic.setPageTotal(null); } paginationFilterTopic.addSortingCriteria("postId", "asc"); ForumTopic forumTopic = getCommunityService().getForumTopicForView(command.getTopicId()); model.put("topic", forumTopic); boolean isTeachingTopic = getTeachingService().isForumInCourse(forumTopic.getForum().getForumId()); model.put("isTeachingTopic", isTeachingTopic); if ((isTeachingTopic && model.get("account") == null) || (isTeachingTopic && !(getTeachingService().canAccess(command.getTopicId(), (String) model.get("account"))))) { // anonymous user cannot view the course topic return new ModelAndView("403", model); } model.put("subscribed", getCommunityService().ifTopicSubscribed(forumTopic.getTopicId())); if (forumTopic.getDocument() != null || forumTopic.getForum().getDocument() != null) { //MD: Prepare the Manuscript Viewer Document document = forumTopic.getDocument() != null ? forumTopic.getDocument() : forumTopic.getForum().getDocument(); if (getManuscriptViewerService().findDocumentImageThumbnail(document) != null) { DocumentExplorer documentExplorer = new DocumentExplorer(document.getEntryId(), document.getVolume().getVolNum(), document.getVolume().getVolLetExt()); documentExplorer.setImage(new Image()); documentExplorer.getImage().setInsertNum(document.getInsertNum()); documentExplorer.getImage().setInsertLet(document.getInsertLet()); documentExplorer.getImage().setImageProgTypeNum(document.getFolioNum()); documentExplorer.getImage().setMissedNumbering(document.getFolioMod()); documentExplorer.getImage().setImageRectoVerso(document.getFolioRectoVerso() == null ? null : Image.ImageRectoVerso.convertFromString(document.getFolioRectoVerso().toString())); documentExplorer.getImage().setImageType(ImageType.C); documentExplorer.setTotal(null); try { documentExplorer = getManuscriptViewerService().getDocumentExplorer(documentExplorer); model.put("documentExplorer", documentExplorer); } catch (ApplicationThrowable applicationThrowable) { model.put("applicationThrowable", applicationThrowable); return new ModelAndView("error/ShowTopicForum", model); } } else { model.put("documentExplorer", null); } } else if (forumTopic.getAnnotation() != null) { Annotation annotation = forumTopic.getAnnotation(); Image image = new Image(); image = getManuscriptViewerService().findImage(annotation.getImage().getImageId()); VolumeExplorer volumeExplorer = new VolumeExplorer(image.getVolNum(), image.getVolLetExt()); volumeExplorer.setSummaryId(null); volumeExplorer.setImage(new Image()); volumeExplorer.getImage().setImageOrder(image.getImageOrder()); volumeExplorer.getImage().setStoragePath(image.getStoragePath()); try { volumeExplorer = getManuscriptViewerService().getVolumeExplorer(volumeExplorer); model.put("volumeExplorer", volumeExplorer); } catch (ApplicationThrowable applicationThrowable) { model.put("applicationThrowable", applicationThrowable); return new ModelAndView("error/ShowTopic", model); } } if (isTeachingTopic) { CourseTopicOption option = getTeachingService() .getCourseTranscriptionTopicOption(forumTopic.getForum().getForumId()); if (option != null) { model.put("courseTranscriptionURL", CourseUtils.getCourseTranscriptionURL(option)); } Course course = getTeachingService().getCourseFromCourseTopic(forumTopic.getTopicId()); model.put("isCoursePerson", getTeachingService().isPersonInCourse(course.getCourseId(), user.getAccount())); } Page postsPage = getCommunityService().getForumPostsFromTopic(forumTopic, paginationFilterTopic); model.put("postsPage", postsPage); Set<String> accounts = new HashSet<String>(); for (ForumPost post : ((List<ForumPost>) postsPage.getList())) { accounts.add(post.getUser().getAccount()); } Map<String, UserAuthority> maxAuthorities = accounts.size() > 0 ? getCommunityService().findUsersMaximumAuthority(accounts) : new HashMap<String, UserAuthority>(); model.put("maxAuthorities", maxAuthorities); model.put("onlineUsers", applicationAccessContainer.getCommunityOnlineUsers()); } catch (ApplicationThrowable applicationThrowable) { model.put("applicationThrowable", applicationThrowable); return new ModelAndView("error/ShowTopicForum", model); } if (ObjectUtils.toString(command.getCompleteDOM()).equals(Boolean.TRUE.toString())) { return new ModelAndView("community/ShowTopicForumCompleteDOM", model); } else { return new ModelAndView("community/ShowTopicForum", model); } } }