Java tutorial
/** * This file is part of Location Service :: Admin. Copyright (C) 2014 Petteri * Kivimki * * Location Service :: Admin 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 3 of the License, or (at your * option) any later version. * * Location Service :: Admin 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 * Location Service :: Admin. If not, see <http://www.gnu.org/licenses/>. */ package com.pkrete.locationservice.admin.controller.mvc; import com.pkrete.locationservice.admin.exception.ObjectNotFoundException; import com.pkrete.locationservice.admin.model.location.Library; import com.pkrete.locationservice.admin.model.owner.Owner; import com.pkrete.locationservice.admin.util.Settings; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Qualifier; import org.springframework.stereotype.Controller; import org.springframework.ui.ModelMap; import org.springframework.validation.BindingResult; import org.springframework.validation.Validator; 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.bind.annotation.SessionAttributes; import org.springframework.web.servlet.ModelAndView; /** * The {@link EditLibraryController EditLibraryController} handles the requests * that are related to editing a library object and then saving it to the * database. This class extends abstract * {@link HandleLocationController HandleLocationController} class. * * @author Petteri Kivimki */ @Controller @RequestMapping("/editlibrary.htm") @SessionAttributes("library") public class EditLibraryController extends HandleLocationController { @Autowired @Qualifier("libraryValidatorMVC") private Validator validator; @RequestMapping(method = RequestMethod.POST) public ModelAndView onSubmit(HttpServletRequest request, HttpServletResponse response, @ModelAttribute("library") Library library, BindingResult result) throws Exception { library.setAreas(parseAreas(request, library)); validator.validate(library, result); if (result.hasErrors()) { ModelMap model = new ModelMap(); this.setReferenceData(request, model); return new ModelAndView("edit_library", model); } library.setUpdater(getUser(request).getUsername()); if (!locationsService.update(library)) { throw new Exception("Updating library failed."); } return new ModelAndView("redirect:locations.htm?select_library=" + request.getParameter("select_library")); } @Override protected void setReferenceData(HttpServletRequest request, ModelMap modelMap) { Owner owner = getOwner(request); modelMap.put("images", imagesService.get(owner)); modelMap.put("maps", mapsService.get(owner)); String path = Settings.getInstance().getImagesWebPath(getOwner(request).getCode()); modelMap.put("imagesPath", path); } @RequestMapping(method = RequestMethod.GET) public String initializeForm(HttpServletRequest request, ModelMap model) throws Exception { String id = request.getParameter("select_library"); Owner owner = getOwner(request); Library lib = locationsService.getLibrary(this.converterService.strToInt(id), owner); if (lib == null) { throw new ObjectNotFoundException(new StringBuilder("Library not found. {\"id\":").append(id) .append(",\"owner\":\"").append(owner.getCode()).append("\"}").toString()); } lib.updateLists(owner.getLanguages()); model.put("library", lib); this.setReferenceData(request, model); return "edit_library"; } }