bom dia maltas,
pessoal estou com grande duvidas, estou iniciando em portlet em java.
estou pensando qual seria a melhor forma de fazer as funções insert, update, delete e select.
da forma como estou querendo fazer (codigo em baixo), ou usar os nomes das tabelas nas funções.
e quais são as respectivas vantagens de cada um, um grande obrigado.
public class DataAccess {
// insert for all table
public void insertObjecto(Object obj) {
SessionFactory sessionFactory = new Configuration().configure()
.buildSessionFactory();
Session session = sessionFactory.openSession();
try {
session.beginTransaction();
session.save(obj);
} catch (Exception e) {
e.printStackTrace();
} finally {
session.getTransaction().commit();
session.close();
sessionFactory.close();
}
}
// update for all table
public void updateObjecto1(Object obj) {
SessionFactory sessionFactory = new Configuration().configure()
.buildSessionFactory();
Session session = sessionFactory.openSession();
try {
session.beginTransaction();
session.save(obj);
} catch (Exception e) {
e.printStackTrace();
} finally {
session.getTransaction().commit();
session.close();
sessionFactory.close();
}
}
// delete for all table
public void deleteObjecto(Object obj) {
SessionFactory sessionFactory = new Configuration().configure()
.buildSessionFactory();
Session session = sessionFactory.openSession();
try {
session.beginTransaction();
session.save(obj);
} catch (Exception e) {
e.printStackTrace();
} finally {
session.getTransaction().commit();
session.close();
sessionFactory.close();
}
}
public ArrayList<Object> getObject(Object obj){
SessionFactory sessionFactory = new Configuration().configure().buildSessionFactory();
Session session = sessionFactory.openSession();
ArrayList<Object> listObject = new ArrayList<Object>();
try {
Query q = session.createQuery("From "+obj);
listObject = (ArrayList<Object>) q.list();
} catch (Exception e) {
e.printStackTrace();
} finally {
session.close();
sessionFactory.close();
}
return listObject;
}
}
