@Test
public void testCascadeAndFetchEntity() throws Exception {
EntityManager em = getOrCreateEntityManager();
em.getTransaction().begin();
Troop disney = new Troop();
disney.setName("Disney");
Soldier mickey = new Soldier();
mickey.setName("Mickey");
disney.addSoldier(mickey);
em.persist(disney);
em.getTransaction().commit();
em.close();
em = getOrCreateEntityManager();
em.getTransaction().begin();
Soldier soldier = em.find(Soldier.class, mickey.getId());
assertFalse(Hibernate.isInitialized(soldier.getTroop()));
em.getTransaction().commit();
assertFalse(Hibernate.isInitialized(soldier.getTroop()));
em.close();
em = getOrCreateEntityManager();
em.getTransaction().begin();
Troop troop = em.find(Troop.class, disney.getId());
em.remove(troop);
// Fail because of HHH-1187
em.getTransaction().commit();
em.close();
}
public static TroopsInfo parse(final String str) {
final String content = str.substring(1, str.length() - 1);
final TroopsInfo troopsInfo = new TroopsInfo();
if (!content.isEmpty()) {
final String[] split = content.split(TO_STRING_DELIMITER);
for (final String element : split) {
final String[] ts = element.split(TROOP_DELIMITER);
if (ts.length != 2) {
throw new IllegalArgumentException("Unparseable");
}
troopsInfo.add(Troop.fromDescription(ts[1]), Integer.valueOf(ts[0]));
}
}
return troopsInfo;
}
@Test
public void testPerfCascadeAndFetchEntity() throws Exception {
EntityManager em = getOrCreateEntityManager();
// init data
em.getTransaction().begin();
int loop = 50;
for (int i = 0; i < loop; i++) {
Troop disney = new Troop();
disney.setName("Disney");
Soldier mickey = new Soldier();
mickey.setName("Mickey");
disney.addSoldier(mickey);
em.persist(disney);
}
em.getTransaction().commit();
em.close();
// Warm up loop
em = getOrCreateEntityManager();
em.getTransaction().begin();
for (int i = 0; i < loop; i++) {
// Soldier soldier = em.find( Soldier.class, new Integer(i) );
Troop troop = em.find(Troop.class, new Integer(i));
// ( ( HibernateEntityManager ) em ).getSession().evict(soldier);
}
long l11 = System.currentTimeMillis();
Query query = em.createQuery("SELECT count(t) FROM Soldier t");
query.getSingleResult();
long l2 = System.currentTimeMillis();
System.out.println("Query1 " + (l2 - l11));
em.getTransaction().commit();
em.close();
// do not evict
for (int j = 0; j < 10; j++) {
em = getOrCreateEntityManager();
em.getTransaction().begin();
for (int i = 0; i < loop; i++) {
Troop troop = em.find(Troop.class, new Integer(i));
((HibernateEntityManager) em).getSession().evict(troop);
}
l11 = System.currentTimeMillis();
query = em.createQuery("SELECT count(t) FROM Soldier t");
query.getSingleResult();
l2 = System.currentTimeMillis();
System.out.println("Query " + (l2 - l11));
em.getTransaction().commit();
em.close();
// evict
em = getOrCreateEntityManager();
em.getTransaction().begin();
for (int i = 0; i < loop; i++) {
// Soldier soldier = em.find( Soldier.class, new Integer(i) );
Troop troop = em.find(Troop.class, new Integer(i));
// ( ( HibernateEntityManager ) em ).getSession().evict(troop);
}
l11 = System.currentTimeMillis();
query = em.createQuery("SELECT count(t) FROM Soldier t");
query.getSingleResult();
l2 = System.currentTimeMillis();
System.out.println("Query " + (l2 - l11));
em.getTransaction().commit();
}
em.close();
}
