JPA Sample

JPA Sample

import java.util.List;
import java.util.UUID;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Persistence;
import javax.persistence.Query;

public class TestJavaApp {
    private static String PERSISTENCE_UNIT_NAME = "DEFAULT_PU";
    private static EntityManagerFactory factory;

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        factory = Persistence.createEntityManagerFactory(PERSISTENCE_UNIT_NAME);
        EntityManager em = factory.createEntityManager();
        
        // read the existing entries and write to console
        Query q = em.createQuery("SELECT p FROM Pelanggan p");
        List<Pelanggan> todoList = q.getResultList();
        for (Pelanggan todo : todoList) {
            System.out.println(todo);
        }
        System.out.println("Size: " + todoList.size());

        // create new todo
        em.getTransaction().begin();
        Pelanggan p = new Pelanggan();
        p.setNamaPelanggan("John Doe");
        p.setIdPelanggan(UUID.randomUUID().toString());
        p.setEmailPelanggan("[email protected]");
        p.setAlamatPelanggan("Bekasi, Indonesia");
        em.persist(p);
        em.getTransaction().commit();

        em.close();
    }

}