br.com.utfpr.pb.config.DatabaseConnection.java Source code

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Here is the source code for br.com.utfpr.pb.config.DatabaseConnection.java

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/*
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package br.com.utfpr.pb.config;

import java.sql.Connection;
import java.sql.SQLException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Persistence;
import org.hibernate.Session;
import org.hibernate.engine.jdbc.connections.spi.ConnectionProvider;
import org.hibernate.engine.spi.SessionFactoryImplementor;

/**
 *
 * @author Vinicius
 */
public class DatabaseConnection {
    private static DatabaseConnection dbConnection;
    private EntityManagerFactory emf;
    private Connection conn;

    private DatabaseConnection() {
        this.emf = Persistence.createEntityManagerFactory("default");

        Session session = getEntityManager().unwrap(Session.class);
        SessionFactoryImplementor sessionFactoryImplementation = (SessionFactoryImplementor) session
                .getSessionFactory();
        ConnectionProvider connectionProvider = sessionFactoryImplementation.getConnectionProvider();
        try {
            this.conn = connectionProvider.getConnection();
        } catch (SQLException ex) {
            ex.printStackTrace();
        }
    }

    public static DatabaseConnection getInstance() {
        if (dbConnection == null) {
            dbConnection = new DatabaseConnection();
        }
        return dbConnection;
    }

    public EntityManagerFactory getEntityManagerFactory() {
        return emf;
    }

    public EntityManager getEntityManager() {
        return emf.createEntityManager();
    }

    public Connection getConnection() {
        return conn;
    }

}