private static void load() {
System.out.println("==============LOAD=================");
Session session = hs.getSessionFactory(false).openSession();
session.beginTransaction();
Region region = (Region) session.load(Region.class, id);
System.out.println("region = " + region);
session.getTransaction().commit();
session.close();
}
private static void delete() {
System.out.println("==============DELETE=================");
Session session = hs.getSessionFactory(false).openSession();
session.beginTransaction();
City city = (City) session.load(City.class, id);
session.delete(city);
session.getTransaction().commit();
session.close();
}
private static void createAutocommit() {
System.out.println("==============AUTOCOMMIT=================");
// Create hibernate session
Session session = hs.getSessionFactory(true).openSession();
// create object
Region region = new Region("HMAO");
// save object
id = session.save(region);
System.out.println("id = " + id);
session.flush();
session.close();
}
private static void update() {
System.out.println("==============UPDATE=================");
Session session = hs.getSessionFactory(false).openSession();
session.beginTransaction();
City city = (City) session.load(City.class, id);
city.setCityName("nefteugansk");
session.saveOrUpdate(city);
System.out.println("city = " + city);
session.getTransaction().commit();
session.close();
}
private static void create() {
System.out.println("==============CREATE=================");
// Create hibernate session
Session session = hs.getSessionFactory(false).openSession();
// begin transaction
session.beginTransaction();
// create object
Region region = new Region("Saint-Petersburg!");
// save object
session.save(region);
session.getTransaction().commit();
session.close();
}
public static void main(String[] args) {
HibernateSimple hs = new HibernateSimple();
Session s = hs.getSessionFactory().openSession();
s.beginTransaction();
Query q = s.createQuery("from Region");
List<Region> regionList = q.list();
for (Region r : regionList) {
System.out.println("Region name:" + r);
// System.out.println("Cities size:" + r.getCityList().size());
}
System.out.println("======================================");
s.flush();
s.getTransaction().commit();
s.close();
AnotherClass.printAgain(
regionList); // uncomment this and comment this System.out.println("Cities size:" +
// r.getCityList().size());
}
private static void getVsLoad() {
System.out.println("==============GET_VS_LOAD=================");
Session session = hs.getSessionFactory(false).openSession();
session.beginTransaction();
Region region = (Region) session.get(Region.class, id);
City city1 = new City();
city1.setCityName("Surgut");
city1.setRegion(region);
session.save(city1);
region = (Region) session.load(Region.class, id);
City city2 = new City();
city2.setCityName("Nizhnevartovsk");
city2.setRegion(region);
id = session.save(city2);
session.getTransaction().commit();
session.close();
}
