/*
 * Copyright (C) 2013-2016 52°North Initiative for Geospatial Open Source
 * Software GmbH
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 as published
 * by the Free Software Foundation.
 *
 * If the program is linked with libraries which are licensed under one of
 * the following licenses, the combination of the program with the linked
 * library is not considered a "derivative work" of the program:
 *
 *     - Apache License, version 2.0
 *     - Apache Software License, version 1.0
 *     - GNU Lesser General Public License, version 3
 *     - Mozilla Public License, versions 1.0, 1.1 and 2.0
 *     - Common Development and Distribution License (CDDL), version 1.0
 *
 * Therefore the distribution of the program linked with libraries licensed
 * under the aforementioned licenses, is permitted by the copyright holders
 * if the distribution is compliant with both the GNU General Public License
 * version 2 and the aforementioned licenses.
 *
 * 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.
 */
package org.n52.series.db;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.transaction.annotation.Transactional;

@Transactional
public class SeriesHibernateSessionHolder implements HibernateSessionStore {

    private static final Logger LOGGER = LoggerFactory.getLogger(SeriesHibernateSessionHolder.class);

    @Autowired
    private SessionFactory seriesSessionFactory;

    @Override
    public Session getSession() {
        return seriesSessionFactory.openSession();
    }

    @Override
    public void returnSession(Session session) {
        if (session != null && session.isOpen()) {
            session.clear();
            session.close();
        }
    }

//    public EntityManager createEntityManager(String persistenceUnitName) {
//        return createEntityManager(persistenceUnitName, Collections.<String, Object>emptyMap());
//    }
//
//    public EntityManager createEntityManager(String persistenceUnitName, Map<String, Object> overrides) {
//        return Persistence.createEntityManagerFactory(persistenceUnitName, overrides)
//                .createEntityManager();
//    }
    @Override
    public void shutdown() {
        LOGGER.info("Closing '{}'", getClass().getSimpleName());
        seriesSessionFactory.close();
    }

}
