@Test
public void testDeleteWithSubquery() {
// setup the test data...
Session s = openSession();
s.beginTransaction();
SimpleEntityWithAssociation owner = new SimpleEntityWithAssociation("myEntity-1");
owner.addAssociation("assoc-1");
owner.addAssociation("assoc-2");
owner.addAssociation("assoc-3");
s.save(owner);
SimpleEntityWithAssociation owner2 = new SimpleEntityWithAssociation("myEntity-2");
owner2.addAssociation("assoc-1");
owner2.addAssociation("assoc-2");
owner2.addAssociation("assoc-3");
owner2.addAssociation("assoc-4");
s.save(owner2);
SimpleEntityWithAssociation owner3 = new SimpleEntityWithAssociation("myEntity-3");
s.save(owner3);
s.getTransaction().commit();
s.close();
// now try the bulk delete
s = openSession();
s.beginTransaction();
int count =
s.createQuery(
"delete SimpleEntityWithAssociation e where size( e.associatedEntities ) = 0 and e.name like '%'")
.executeUpdate();
assertEquals("incorrect delete count", 1, count);
s.getTransaction().commit();
s.close();
// finally, clean up
s = openSession();
s.beginTransaction();
s.createQuery("delete SimpleAssociatedEntity").executeUpdate();
s.createQuery("delete SimpleEntityWithAssociation").executeUpdate();
s.getTransaction().commit();
s.close();
}
@SuppressWarnings({"unchecked"})
@Test
public void testUpdateWithWhereExistsSubquery() {
// multi-table ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Session s = openSession();
Transaction t = s.beginTransaction();
Human joe = new Human();
joe.setName(new Name("Joe", 'Q', "Public"));
s.save(joe);
Human doll = new Human();
doll.setName(new Name("Kyu", 'P', "Doll"));
doll.setFriends(new ArrayList());
doll.getFriends().add(joe);
s.save(doll);
t.commit();
s.close();
s = openSession();
t = s.beginTransaction();
String updateQryString =
"update Human h "
+ "set h.description = 'updated' "
+ "where exists ("
+ " select f.id "
+ " from h.friends f "
+ " where f.name.last = 'Public' "
+ ")";
int count = s.createQuery(updateQryString).executeUpdate();
assertEquals(1, count);
s.delete(doll);
s.delete(joe);
t.commit();
s.close();
// single-table (one-to-many & many-to-many) ~~~~~~~~~~~~~~~~~~~~~~~~~~
s = openSession();
t = s.beginTransaction();
SimpleEntityWithAssociation entity = new SimpleEntityWithAssociation();
SimpleEntityWithAssociation other = new SimpleEntityWithAssociation();
entity.setName("main");
other.setName("many-to-many-association");
entity.getManyToManyAssociatedEntities().add(other);
entity.addAssociation("one-to-many-association");
s.save(entity);
t.commit();
s.close();
s = openSession();
t = s.beginTransaction();
// one-to-many test
updateQryString =
"update SimpleEntityWithAssociation e "
+ "set e.name = 'updated' "
+ "where exists ("
+ " select a.id "
+ " from e.associatedEntities a "
+ " where a.name = 'one-to-many-association' "
+ ")";
count = s.createQuery(updateQryString).executeUpdate();
assertEquals(1, count);
// many-to-many test
if (getDialect().supportsSubqueryOnMutatingTable()) {
updateQryString =
"update SimpleEntityWithAssociation e "
+ "set e.name = 'updated' "
+ "where exists ("
+ " select a.id "
+ " from e.manyToManyAssociatedEntities a "
+ " where a.name = 'many-to-many-association' "
+ ")";
count = s.createQuery(updateQryString).executeUpdate();
assertEquals(1, count);
}
s.delete(entity.getManyToManyAssociatedEntities().iterator().next());
s.delete(entity);
t.commit();
s.close();
}
