com.remediatetheflag.global.persistence.HibernatePersistenceSingleton.java Source code

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Here is the source code for com.remediatetheflag.global.persistence.HibernatePersistenceSingleton.java

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/*
 *  
 * REMEDIATE THE FLAG
 * Copyright 2018 - Andrea Scaduto 
 * remediatetheflag@gmail.com
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *     http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * 
 */
package com.remediatetheflag.global.persistence;

import org.hibernate.SessionFactory;
import org.hibernate.boot.MetadataSources;
import org.hibernate.boot.registry.StandardServiceRegistry;
import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class HibernatePersistenceSingleton {

    private static Logger logger = LoggerFactory.getLogger(HibernatePersistenceSingleton.class);
    private static SessionFactory sessionFactory;

    public static SessionFactory getSessionFactory() {
        if (sessionFactory == null)
            init();
        return sessionFactory;
    }

    private static void init() {
        StandardServiceRegistry registry = new StandardServiceRegistryBuilder().configure().build();
        try {
            sessionFactory = new MetadataSources(registry).buildMetadata().buildSessionFactory();
            logger.debug("Created Hibernate SessionFactory");
        } catch (Exception e) {
            logger.error(e.getMessage());
            StandardServiceRegistryBuilder.destroy(registry);
        }
    }
}