de.tuclausthal.submissioninterface.persistence.dao.impl.PointCategoryDAO.java Source code

Introduction

Here is the source code for de.tuclausthal.submissioninterface.persistence.dao.impl.PointCategoryDAO.java

Source

/*
 * Copyright 2010 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.persistence.dao.impl;

import org.hibernate.Session;
import org.hibernate.criterion.Projections;
import org.hibernate.criterion.Restrictions;

import de.tuclausthal.submissioninterface.persistence.dao.PointCategoryDAOIf;
import de.tuclausthal.submissioninterface.persistence.datamodel.PointCategory;
import de.tuclausthal.submissioninterface.persistence.datamodel.Task;

/**
 * Data Access Object implementation for the PointCategoryDAOIf
 * @author Sven Strickroth
 */
public class PointCategoryDAO extends AbstractDAO implements PointCategoryDAOIf {
    public PointCategoryDAO(Session session) {
        super(session);
    }

    @Override
    public void deletePointCategory(PointCategory pointCategory) {
        Session session = getSession();
        session.update(pointCategory);
        session.delete(pointCategory);
    }

    @Override
    public PointCategory newPointCategory(Task task, int points, String description, boolean optional) {
        Session session = getSession();
        PointCategory pointCategory = new PointCategory(task, points, description, optional);
        session.save(pointCategory);
        return pointCategory;
    }

    @Override
    public PointCategory getPointCategory(int id) {
        return (PointCategory) getSession().get(PointCategory.class, id);
    }

    @Override
    public int countPoints(Task task) {
        Integer ret = (Integer) session.createCriteria(PointCategory.class).add(Restrictions.eq("task", task))
                .add(Restrictions.eq("optional", false)).setProjection(Projections.sum("points")).uniqueResult();
        if (ret == null) {
            return 0;
        }
        return ret;
    }
}