1
之间有什么区别:差异性集合
- criteriaBuilder.in(谓语);
- criteriaQuery.where(predicate);
这似乎给出了相同的结果。我错过了什么吗?我们应该选择查询上面的生成器吗?
完整示例:
List<String> names = new ArrayList<String>();
names.add("John");
names.add("Emma");
CriteriaBuilder criteriaBuilder = entityManager.getCriteriaBuilder();
CriteriaQuery<PersonEntity> criteriaQuery = criteriaBuilder.createQuery(PersonEntity.class);
Root<PersonEntity> root = criteriaQuery.from(PersonEntity.class);
Predicate predicate = root.get(PersonEntity_.name).in(names);
criteriaBuilder.in(predicate);
// or alternative: criteriaQuery.where(predicate);
List<PersonEntity> list = entityManager.createQuery(cq).getResultList();