br.genericrepository.util.ManagerFactory.java Source code

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Here is the source code for br.genericrepository.util.ManagerFactory.java

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package br.genericrepository.util;

import com.mysql.jdbc.Connection;
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;

/**
 * @brief Classe ManagerFactory
 * @author Kaynan Coelho Lira
 * @date 27/12/2015
 */
public class ManagerFactory {

    private static ManagerFactory managerFactory;
    private EntityManagerFactory emf;
    private EntityManager em;

    public ManagerFactory() {
        emf = Persistence.createEntityManagerFactory(ConfigDataSource.persistenceUnit);
        em = emf.createEntityManager();
    }

    public static synchronized ManagerFactory getInstante() {
        if (managerFactory == null) {
            managerFactory = new ManagerFactory();
        }
        return managerFactory;
    }

    public void openConnection() {
        emf = Persistence.createEntityManagerFactory(ConfigDataSource.persistenceUnit);
        em = emf.createEntityManager();
    }

    public void closeConnection() {
        em.close();
        emf.close();
    }

    public Connection getConnection() {
        Connection connection = null;
        try {
            Session session = (Session) em.getDelegate();
            SessionFactoryImplementor sfi = (SessionFactoryImplementor) session.getSessionFactory();
            ConnectionProvider cp = sfi.getConnectionProvider();
            connection = (Connection) cp.getConnection();
            return connection;
        } catch (Exception ex) {
            ex.printStackTrace();
        }
        return connection;
    }

    public EntityManagerFactory getEmf() {
        return emf;
    }

    public void setEmf(EntityManagerFactory emf) {
        this.emf = emf;
    }

    public EntityManager getEm() {
        return em;
    }

    public void setEm(EntityManager em) {
        this.em = em;
    }

}