Company cc = em.find(Company.class, clientUser.getCompany().getId());
System.out.println(cc.getCompany_code());

HashMap findProperties = new HashMap();
findProperties.put(QueryHints.CACHE_RETRIEVE_MODE, CacheRetrieveMode.BYPASS);

Company oo = em.find(Company.class, clientUser.getCompany().getId(), findProperties);
System.out.println(oo.getCompany_code());