Java tutorial
/* * The MIT License * * Copyright 2015 Tijme Gommers <t.gommers@jetcat.nl>. * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ package com.klm.workshop.controller.host.manage; import com.klm.workshop.dao.SessionDAO; import com.klm.workshop.dao.WorkshopDAO; import com.klm.workshop.editor.SessionWorkshopEditor; import com.klm.workshop.model.Session; import com.klm.workshop.model.Workshop; import java.util.Locale; import javax.validation.Valid; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.support.PagedListHolder; import org.springframework.context.MessageSource; import org.springframework.stereotype.Controller; import org.springframework.validation.BindingResult; import org.springframework.web.bind.WebDataBinder; import org.springframework.web.bind.annotation.InitBinder; import org.springframework.web.bind.annotation.ModelAttribute; import org.springframework.web.bind.annotation.PathVariable; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.servlet.ModelAndView; import org.springframework.web.servlet.mvc.support.RedirectAttributes; /** * Host manage sessions controller * * @author Tijme Gommers <t.gommers@jetcat.nl> */ @Controller("hostManageSessionController") @RequestMapping(value = "/host/manage") public class SessionController { /** * Session data access object */ @Autowired private SessionDAO sessionDAO; /** * Workshop data access object */ @Autowired private WorkshopDAO workshopDAO; /** * Translations */ @Autowired private MessageSource messageSource; /** * Register editors to cast input strings to objects. E.g. String ID to a * Session object * * @param binder The request data binder */ @InitBinder public void dataBinding(WebDataBinder binder) { binder.registerCustomEditor(Workshop.class, "workshop", new SessionWorkshopEditor(workshopDAO)); } /** * List of sessions * * @param model Objects and view * @param page Current pagination page * @param search Search value * @return The sessions list view */ @RequestMapping(value = "/sessions/index", method = RequestMethod.GET) public ModelAndView index(ModelAndView model, @RequestParam(name = "p", required = false, defaultValue = "0") int page, @RequestParam(name = "search", required = false, defaultValue = "") String search) { PagedListHolder pagedListHolder = new PagedListHolder(); pagedListHolder.setSource(sessionDAO.searchAll(search)); pagedListHolder.setPage(page); model.addObject("pagedListHolder", pagedListHolder); model.setViewName("host/manage/sessions/index"); return model; } /** * Show create sessions form * * @param model Objects and view * @return Form to create a session */ @RequestMapping(value = "/sessions/create", method = RequestMethod.GET) public ModelAndView getCreate(ModelAndView model) { model.addObject("session", new Session()); model.addObject("workshops", workshopDAO.findAll()); model.setViewName("host/manage/sessions/create"); return model; } /** * Create sessions, and show create sessions form. On error, show errors. * On success, redirect to index and show success message. * * @param model Objects and view * @param session The posted session * @param result Binded validation * @param redirect The redirect attributes * @param locale The current client locale * @return Form to create a sessions, or a redirect (if session was created successfully) */ @RequestMapping(value = "/sessions/create", method = RequestMethod.POST) public ModelAndView postCreate(ModelAndView model, @ModelAttribute("session") @Valid Session session, BindingResult result, RedirectAttributes redirect, Locale locale) { if (result.hasErrors()) { model.addObject("workshops", workshopDAO.findAll()); model.setViewName("host/manage/sessions/create"); } else { sessionDAO.create(session); String success = messageSource.getMessage("general.create_success", new String[] { session.getWorkshop().getName() }, locale); redirect.addFlashAttribute("alertSuccess", success); model.setViewName("redirect:/host/manage/sessions/index"); } return model; } /** * Show update session form * * @param id The ID of the session to update * @param model Objects and view * @return Form to create a session */ @RequestMapping(value = "/sessions/update/{id}", method = RequestMethod.GET) public ModelAndView getUpdate(ModelAndView model, @PathVariable int id) { model.addObject("session", (Session) sessionDAO.findById(id)); model.addObject("workshops", workshopDAO.findAll()); model.setViewName("host/manage/sessions/update"); return model; } /** * Update session, and show update session form. On error, show errors. On * success, redirect to index and show success message. * * @param model Objects and view * @param id The ID of the session to update * @param session The posted session * @param result Binded validation * @param redirect The redirect attributes * @param locale The current client locale * @return Form to update a session, or a redirect (if session was updated successfully) */ @RequestMapping(value = "/sessions/update/{id}", method = RequestMethod.POST) public ModelAndView postUpdate(ModelAndView model, @PathVariable int id, @ModelAttribute("session") @Valid Session session, BindingResult result, RedirectAttributes redirect, Locale locale) { if (result.hasErrors()) { model.addObject("workshops", workshopDAO.findAll()); model.setViewName("host/manage/sessions/update"); } else { sessionDAO.update(session); String success = messageSource.getMessage("general.update_success", new String[] { session.getWorkshop().getName() }, locale); redirect.addFlashAttribute("alertSuccess", success); model.setViewName("redirect:/host/manage/sessions/index"); } return model; } /** * Delete session, based on the given session id. Then redirects to the * index, with a alert message. * * @param id The ID of the session to delete * @param redirect The redirect attributes * @param locale The current client locale * @return Redirect to the index */ @RequestMapping(value = "/sessions/delete/{id}", method = RequestMethod.POST) public String getDelete(@PathVariable int id, RedirectAttributes redirect, Locale locale) { Session session = (Session) sessionDAO.findById(id); String success = messageSource.getMessage("general.delete_success", new String[] { session.getWorkshop().getName() }, locale); sessionDAO.delete(session); redirect.addFlashAttribute("alertSuccess", success); return "redirect:/host/manage/sessions/index"; } }