com.hmiard.leaves.framework.Utils.Persistence.HibernateUtils.java Source code

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Here is the source code for com.hmiard.leaves.framework.Utils.Persistence.HibernateUtils.java

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/*
 * Leaves Framework
 * Copyright (C) 2015  Hugo Miard
 *
 * 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 2 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, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

package com.hmiard.leaves.framework.Utils.Persistence;

import com.hmiard.leaves.framework.LeavesApplication;
import org.hibernate.SessionFactory;
import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
import org.hibernate.cfg.Configuration;

import javax.persistence.Entity;
import java.io.File;
import java.lang.annotation.Annotation;

public class HibernateUtils {

    private static SessionFactory sessionFactory;
    private static Configuration conf;

    public static void init(File confFile) {

        conf = new Configuration().configure(confFile);
        init();
    }

    public static void init(String resource) {

        conf = new Configuration().configure(resource);
        init();
    }

    private static void init() {

        if (conf == null)
            return;
        try {
            StandardServiceRegistryBuilder builder = new StandardServiceRegistryBuilder()
                    .applySettings(conf.getProperties());

            sessionFactory = conf.buildSessionFactory(builder.build());
        } catch (Throwable ex) {
            LeavesApplication.say("ERROR : Initial Hibernate SessionFactory creation failed : " + ex);
            throw new ExceptionInInitializerError(ex);
        }
    }

    public static void shutdown() {

        if (sessionFactory != null)
            sessionFactory.close();
    }

    /**
     * Checking if a class is annotated as Entity
     *
     * @param c Class
     * @return boolean
     */
    public static boolean isAnEntityClass(Class<?> c) {

        return c.isAnnotationPresent(Entity.class);
    }

    public static SessionFactory getSessionFactory() {
        return sessionFactory;
    }

    public static Configuration getConf() {
        return conf;
    }
}