public static int dajUkupanBrojRazlicitihGostiju()
		{
			Session session = HibernateUtil.getSessionFactory().openSession();
			Query q = session.createQuery("from " + Boravak.class.getName());
			List<Boravak> sviBoravci = (List<Boravak>)q.list();
			session.close();
			List<Long> gostIds = new ArrayList();
			for(Boravak boravak : sviBoravci)
			{
				if(boravak.getGost() != null)
				{
					if(!gostIds.contains(boravak.getGost().getId()))
					{
						gostIds.add(boravak.getGost().getId());
					}
				}
			}
			
			return gostIds.size();
		}