DAO.ClassesDAO.java Source code

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Here is the source code for DAO.ClassesDAO.java

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/*
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package DAO;

import Hibernate.Classes;
import java.util.List;
import javax.ejb.Stateless;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
import org.hibernate.cfg.Configuration;

/**
 *
 * @author wilson.li
 */

public class ClassesDAO implements IDAO<Classes, String> {
    private Transaction currentTransaction;
    private Session currentSession;

    private static SessionFactory getSessionFactory() {
        Configuration config = new Configuration().configure();
        StandardServiceRegistryBuilder builder = new StandardServiceRegistryBuilder()
                .applySettings(config.getProperties());
        SessionFactory sessionfactory = config.buildSessionFactory(builder.build());
        return sessionfactory;
    }

    public Session openCurrentSession() {
        this.currentSession = getSessionFactory().openSession();
        return this.currentSession;
    }

    public Transaction openCurrentTransaction() {
        this.currentSession = getSessionFactory().openSession();
        this.currentTransaction = this.currentSession.beginTransaction();
        return this.currentTransaction;
    }

    public void closeCurrentSession() {
        this.currentSession.close();
    }

    public void closeCurrentTransaction() {
        this.currentSession.close();
        this.currentTransaction.commit();
    }

    public Session getCurrentSession() {
        return this.currentSession;
    }

    public Transaction getCurrentTransaction() {
        return this.currentTransaction;
    }

    public void setCurrentSession(Session session) {
        this.currentSession = session;
    }

    public void setCurrentTransaction(Transaction transaction) {
        this.currentTransaction = transaction;
    }

    @Override
    public void persist(Classes entity) {
        getCurrentSession().save(entity);
    }

    @Override
    public void update(Classes entity) {
        getCurrentSession().update(entity);
    }

    @Override
    public Classes findById(String id) {
        Classes singleClass = (Classes) getCurrentSession().get(Classes.class, id);
        return singleClass;
    }

    @Override
    public void delete(Classes entity) {
        getCurrentSession().delete(entity);
    }

    @Override
    public List<Classes> findAll() {
        List<Classes> Class;
        Class = (List<Classes>) getCurrentSession().createQuery("From Classes").list();
        return Class;
    }

    @Override
    public void deleteAll() {
        List<Classes> allClass = findAll();

        for (Classes singleClass : allClass) {
            getCurrentSession().delete(singleClass);
        }
    }

}