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

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Here is the source code for org.messic.server.datamodel.jpaimpl.DAOJPAGenre.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.MDOGenre;
import org.messic.server.datamodel.dao.DAOGenre;
import org.springframework.stereotype.Component;
import org.springframework.transaction.annotation.Transactional;

@Component
@Transactional
public class DAOJPAGenre extends DAOJPA<MDOGenre> implements DAOGenre {

    public DAOJPAGenre() {
        super(MDOGenre.class);
    }

    @Override
    @Transactional
    public List<MDOGenre> getAll(String username) {
        Query query = entityManager
                .createQuery("from MDOGenre as a where (a.owner.login= :userName) ORDER BY UPPER(a.name)");
        query.setParameter("userName", username);
        @SuppressWarnings("unchecked")
        List<MDOGenre> results = query.getResultList();
        return results;
    }

    @Override
    @Transactional
    public List<MDOGenre> getRandomGenre(String username, int number) {
        Query query = entityManager
                .createQuery("from MDOGenre as a where (1=1 AND a.owner.login= :userName) order by rand()");
        query.setParameter("userName", username);
        query.setMaxResults(5);
        @SuppressWarnings("unchecked")
        List<MDOGenre> results = query.getResultList();
        return results;
    }

    /**
     * @TODO limit to the valid genres for the user?
     */
    @Override
    @Transactional
    public List<MDOGenre> findSimilarGenre(String genreName, String username) {
        Query query = entityManager
                .createQuery("from MDOGenre as a where (a.owner.login = :userName) AND (a.name LIKE :genreName)");
        query.setParameter("genreName", "%" + genreName + "%");
        query.setParameter("userName", username);

        @SuppressWarnings("unchecked")
        List<MDOGenre> results = query.getResultList();
        return results;
    }

    @Override
    @Transactional
    public MDOGenre getGenre(String username, Long genreSid) {
        Query query = entityManager
                .createQuery("from MDOGenre as a where (a.owner.login = :userName) AND (a.sid= :genreSid)");
        query.setParameter("genreSid", genreSid);
        query.setParameter("userName", username);

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

    @Override
    @Transactional
    public MDOGenre getGenre(String username, String genreName) {
        Query query = entityManager
                .createQuery("from MDOGenre as a where (a.owner.login = :userName) AND (a.name = :genreName)");
        query.setParameter("genreName", "'" + genreName + "'");
        query.setParameter("userName", username);

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

    @Override
    @Transactional
    public MDOGenre getByName(String username, String genreName) {
        Query query = entityManager
                .createQuery("from MDOGenre as a where (a.owner.login = :userName) AND (a.name = :genreName)");
        query.setParameter("genreName", genreName);
        query.setParameter("userName", username);

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

}