org.sloth.web.ajax.ObservationCreationBubbleController.java Source code

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Here is the source code for org.sloth.web.ajax.ObservationCreationBubbleController.java

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/*
 * Copyright (C) 2009-2010  Stefan Arndt, Christian Autermann, Dustin Demuth,
 *                  Christoph Fendrich, Simon Ottenhues, Christian Paluschek
 *
 * This program 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.
 *
 * This program 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 program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.sloth.web.ajax;

import static org.sloth.util.ControllerUtils.isAuth;
import static org.sloth.util.ControllerUtils.getUser;

import javax.servlet.http.HttpSession;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.sloth.model.Categorie;

import org.sloth.model.Coordinate;
import org.sloth.model.Observation;
import org.sloth.service.ObservationService;
import org.sloth.util.CategorieEditor;
import org.sloth.validation.ObservationValidator;

import org.springframework.beans.factory.annotation.Autowired;
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.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.support.SessionStatus;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.SessionAttributes;

/**
 * {@code Controller} to create a {@code Observation}.
 */
@Controller
@RequestMapping("/ajax/bubble")
@SessionAttributes({ "observation", "categories" })
public class ObservationCreationBubbleController {

    private static final String SUCCESS_VIEW = "ajax/success";
    private static final String ERROR_VIEW = "ajax/error";
    private static final String FORM_VIEW = "ajax/form";
    private static final String REJECT_VIEW = "ajax/reject";
    private static final String OBSERVATION_ATTRIBUTE = "observation";
    private static final String CATEGORIES_ATTRIBUTE = "categories";
    private static final String LONGITUDE_PARAM = "lon";
    private static final String LATITUDE_PARAM = "lat";
    private static final Logger logger = LoggerFactory.getLogger(ObservationCreationBubbleController.class);
    private ObservationValidator observationValidator;
    private ObservationService observationService;

    /**
     * @param observationValidator the {@code ObservationValidator} to set
     */
    @Autowired
    public void setObservationValidator(ObservationValidator observationValidator) {
        this.observationValidator = observationValidator;
    }

    /**
     * @param observationService the {@code ObservationService} to set
     */
    @Autowired
    public void setObservationService(ObservationService observationService) {
        this.observationService = observationService;
    }

    /**
     * Configures the Binder
     * 
     * @param webDataBinder the {@code WebDataBinder} to configure
     */
    @InitBinder
    public void initBinder(WebDataBinder webDataBinder) {
        CategorieEditor categorieEditor = new CategorieEditor();
        categorieEditor.setObservationService(observationService);
        webDataBinder.registerCustomEditor(Categorie.class, categorieEditor);
    }

    /**
     * Handles the {@code GET}-request and sets up the form.
     */
    @RequestMapping(method = RequestMethod.GET)
    public ModelAndView get(HttpSession session, @RequestParam(LONGITUDE_PARAM) Double longitude,
            @RequestParam(LATITUDE_PARAM) Double latitude) {
        if (isAuth(session)) {
            ModelAndView mav = new ModelAndView(FORM_VIEW);
            Observation o = new Observation();
            o.setCoordinate(new Coordinate(longitude, latitude));
            mav.addObject(OBSERVATION_ATTRIBUTE, o);
            mav.addObject(CATEGORIES_ATTRIBUTE, observationService.getCategories());
            return mav;
        } else {
            return new ModelAndView(REJECT_VIEW);
        }
    }

    /**
     * Handles the {@code POST}-request and registrates the {@code Observation}.
     */
    @RequestMapping(method = RequestMethod.POST)
    public ModelAndView post(@RequestParam(LONGITUDE_PARAM) Double longitude,
            @RequestParam(LATITUDE_PARAM) Double latitude,
            @ModelAttribute(OBSERVATION_ATTRIBUTE) Observation observation, BindingResult result,
            SessionStatus status, HttpSession session, Model m) {
        if (isAuth(session)) {
            logger.info("Session is authed.");
            logger.info("Building Coordinate from given Lon: {} and Lat: {}.", longitude, latitude);
            observation.setCoordinate(new Coordinate(longitude, latitude));
            logger.info("Setting User {}.", getUser(session));
            observation.setUser(getUser(session));
            logger.info("Validating Observation {}", observation);
            observationValidator.validate(observation, result);
            if (result.hasErrors()) {
                logger.info("Found Errors.");
                logger.debug("{}", m.asMap().keySet());
                return new ModelAndView(FORM_VIEW, m.asMap());
            } else {
                try {
                    logger.info("Trying to persist Observation {}", observation);
                    observationService.registrate(observation);
                    logger.info("Succesfully persisted Observation {}", observation);
                    ModelAndView mav = new ModelAndView(SUCCESS_VIEW);
                    mav.addObject(observation);
                    return new ModelAndView(SUCCESS_VIEW, OBSERVATION_ATTRIBUTE, observation);
                } catch (Exception e) {
                    logger.warn("Unexpected Exception.", e);
                    return new ModelAndView(ERROR_VIEW);
                } finally {
                    logger.info("Clearing session attributes");
                    //status.setComplete();
                }
            }
        } else {
            logger.info("Session is not authed");
            return new ModelAndView(REJECT_VIEW);
        }
    }

}