@Entity
public class Animal {
  @Id
  Long id;
  String name;
  Integer age;
}

@Entity
  @Test
  public void testPredicateWithString() {
    EntityManager entityManager = getEntityManager();

    CriteriaBuilder criteriaBuilder = entityManager.getCriteriaBuilder();
    CriteriaQuery<Animal> criteriaQuery = criteriaBuilder.createQuery(Animal.class);
    Root<Animal> from = criteriaQuery.from(Animal.class);

    Predicate namePredicate = criteriaBuilder.equal(from.get("name"), "horse");

    criteriaQuery.select(from).where(namePredicate);
    TypedQuery<Animal> typedQuery = entityManager.createQuery(criteriaQuery);

    Query query = typedQuery.unwrap(QueryImpl.class).getHibernateQuery();
    System.out.println(query.getQueryString());
    assertTrue(query.getQueryString().contains("name=:param"));
  }

  @Test
  public void testPredicateWithInteger() {
    EntityManager entityManager = getEntityManager();

    CriteriaBuilder criteriaBuilder = entityManager.getCriteriaBuilder();
    CriteriaQuery<Animal> criteriaQuery = criteriaBuilder.createQuery(Animal.class);
    Root<Animal> from = criteriaQuery.from(Animal.class);

    Predicate agePredicate = criteriaBuilder.equal(from.get("age"), Integer.valueOf(42));

    criteriaQuery.select(from).where(agePredicate);
    TypedQuery<Animal> typedQuery = entityManager.createQuery(criteriaQuery);

    Query query = typedQuery.unwrap(QueryImpl.class).getHibernateQuery();
    System.out.println(query.getQueryString());
    assertTrue(query.getQueryString().contains("age=:param"));
  }
}