org.messic.server.datamodel.jpaimpl.DAOJPASongStatistics.java Source code

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Here is the source code for org.messic.server.datamodel.jpaimpl.DAOJPASongStatistics.java

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/*
 * Copyright (C) 2013
 *
 *  This file is part of Messic.
 * 
 *  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.messic.server.datamodel.jpaimpl;

import java.util.List;

import javax.persistence.Query;

import org.messic.server.datamodel.MDOSongStatistics;
import org.messic.server.datamodel.dao.DAOSongStatistics;
import org.springframework.stereotype.Component;
import org.springframework.transaction.annotation.Transactional;

@Component
@Transactional
public class DAOJPASongStatistics extends DAOJPA<MDOSongStatistics> implements DAOSongStatistics {

    public DAOJPASongStatistics() {
        super(MDOSongStatistics.class);
    }

    @Override
    @Transactional
    public MDOSongStatistics getStatistics(String username, long songSid) {
        Query query = entityManager.createQuery(
                "from MDOSongStatistics as a where (a.song.owner.login = :userName AND a.song.sid = :songSid)");
        query.setParameter("userName", username);
        query.setParameter("songSid", songSid);

        @SuppressWarnings("unchecked")
        List<MDOSongStatistics> results = query.getResultList();
        if (results != null && results.size() > 0) {
            return results.get(0);
        }
        return null;
    }

}