de.tuclausthal.submissioninterface.servlets.controller.PublishGrades.java Source code

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Here is the source code for de.tuclausthal.submissioninterface.servlets.controller.PublishGrades.java

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/*
 * Copyright 2011 Sven Strickroth <email@cs-ware.de>
 * 
 * This file is part of the SubmissionInterface.
 * 
 * SubmissionInterface is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 3 as
 * published by the Free Software Foundation.
 * 
 * SubmissionInterface 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 SubmissionInterface. If not, see <http://www.gnu.org/licenses/>.
 */

package de.tuclausthal.submissioninterface.servlets.controller;

import java.io.IOException;
import java.util.Date;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.hibernate.LockMode;
import org.hibernate.Session;
import org.hibernate.Transaction;

import de.tuclausthal.submissioninterface.persistence.dao.DAOFactory;
import de.tuclausthal.submissioninterface.persistence.dao.ParticipationDAOIf;
import de.tuclausthal.submissioninterface.persistence.dao.TaskDAOIf;
import de.tuclausthal.submissioninterface.persistence.datamodel.Participation;
import de.tuclausthal.submissioninterface.persistence.datamodel.ParticipationRole;
import de.tuclausthal.submissioninterface.persistence.datamodel.Submission;
import de.tuclausthal.submissioninterface.persistence.datamodel.Task;
import de.tuclausthal.submissioninterface.servlets.RequestAdapter;
import de.tuclausthal.submissioninterface.util.MailSender;
import de.tuclausthal.submissioninterface.util.Util;

/**
 * Controller-Servlet for publishing points
 * @author Sven Strickroth
 */
public class PublishGrades extends HttpServlet {
    @Override
    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws IOException, ServletException {
        Session session = RequestAdapter.getSession(request);

        TaskDAOIf taskDAO = DAOFactory.TaskDAOIf(session);
        Task task = taskDAO.getTask(Util.parseInteger(request.getParameter("taskid"), 0));
        if (task == null) {
            request.setAttribute("title", "Aufgabe nicht gefunden");
            request.getRequestDispatcher("MessageView").forward(request, response);
            return;
        }

        // check Lecture Participation
        ParticipationDAOIf participationDAO = DAOFactory.ParticipationDAOIf(session);
        Participation participation = participationDAO.getParticipation(RequestAdapter.getUser(request),
                task.getTaskGroup().getLecture());
        if (participation == null || participation.getRoleType().compareTo(ParticipationRole.ADVISOR) != 0) {
            response.sendError(HttpServletResponse.SC_FORBIDDEN, "insufficient rights");
            return;
        }

        if (task.getDeadline().after(Util.correctTimezone(new Date())) || task.getShowPoints() != null) {
            request.setAttribute("title", "Ungltige Anfrage");
            request.getRequestDispatcher("MessageView").forward(request, response);
            return;
        }

        request.setAttribute("task", task);
        request.getRequestDispatcher("PublishGradesView").forward(request, response);
    }

    @Override
    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws IOException, ServletException {
        Session session = RequestAdapter.getSession(request);

        TaskDAOIf taskDAO = DAOFactory.TaskDAOIf(session);
        Task task = taskDAO.getTask(Util.parseInteger(request.getParameter("taskid"), 0));
        if (task == null) {
            request.setAttribute("title", "Aufgabe nicht gefunden");
            request.getRequestDispatcher("MessageView").forward(request, response);
            return;
        }

        // check Lecture Participation
        ParticipationDAOIf participationDAO = DAOFactory.ParticipationDAOIf(session);
        Participation participation = participationDAO.getParticipation(RequestAdapter.getUser(request),
                task.getTaskGroup().getLecture());
        if (participation == null || participation.getRoleType().compareTo(ParticipationRole.ADVISOR) != 0) {
            response.sendError(HttpServletResponse.SC_FORBIDDEN, "insufficient rights");
            return;
        }

        if (task.getDeadline().after(Util.correctTimezone(new Date())) || task.getShowPoints() != null) {
            request.setAttribute("title", "Ungltige Anfrage");
            request.getRequestDispatcher("MessageView").forward(request, response);
            return;
        }

        Transaction tx = session.beginTransaction();
        session.lock(task, LockMode.UPGRADE);
        if (request.getParameter("mail") != null) {
            for (Submission submission : task.getSubmissions()) {
                for (Participation submitterParticipation : submission.getSubmitters()) {
                    if (submission.getPoints() != null && submission.getPoints().getPointsOk()) {
                        // HACK hardcoded URL
                        MailSender.sendMail(submitterParticipation.getUser().getFullEmail(), "Bewertung erfolgt",
                                "Hallo " + submitterParticipation.getUser().getFullName()
                                        + ",\n\neine Ihrer Abgaben wurde bewertet.\n\nEinsehen: <https://si.in.tu-clausthal.de/submissionsystem/servlets/ShowTask?taskid="
                                        + task.getTaskid() + ">.\n\n-- \nReply is not possible.");
                    }
                }
            }
        }
        task.setShowPoints(task.getDeadline());
        session.saveOrUpdate(task);
        tx.commit();

        response.sendRedirect(response.encodeRedirectURL("ShowTask?taskid=" + task.getTaskid()));
    }
}