如何为 AND 和 OR 条件编写 JPA FindBy 查询

Question

我想从 JPA findBy 方法创建 JPA 查询

select * from somTable where Col1 =1
    and (col2 > 0 or col2 = 0)
    and (col3 > 0 or col3 = 0)
    and (col4 >0 or col4 =0)
    and (col5 >0 or col5 =0)

Answer 1

有多种方法可以解决

Spring Data JPA方式，使用@Query and Named Parameters:

public interface SomeTableRepository extends JpaRepository<SomeTable, Long> {   
    @Query("SELECT t FROM SomeTable t WHERE t.col1 = :col1 AND t.col2 >= :col2 AND t.col3 >= :col3")
    List<SomeTable> findAllByCol(@Param("col1") int col1, @Param("col2") int col2, @Param("col3") int col3);
}

JPA方式，使用JPA Criteria Queries:

@Repository
@Transactional
public class SomeTableJpaRepository {

    @PersistenceContext
    EntityManager entityManager;

    public List<SomeTable> findAll(int col1, int col2, int col3, int col4, int col5) {
        CriteriaBuilder criteriaBuilder = entityManager.getCriteriaBuilder();
        CriteriaQuery<SomeTable> criteriaQuery = criteriaBuilder.createQuery(SomeTable.class);
        Root<SomeTable> itemRoot = criteriaQuery.from(SomeTable.class);

        List<Predicate> predicates = new ArrayList<>();

        Predicate predicateCol1
              = criteriaBuilder.equal(itemRoot.get("col1"), col1);
        predicates.add(predicateCol1);

        Predicate predicateCol2
              = criteriaBuilder.greaterThanOrEqualTo(itemRoot.get("col2"), col2);
        predicates.add(predicateCol2);

        Predicate predicateCol3
              = criteriaBuilder.greaterThanOrEqualTo(itemRoot.get("col3"), col3);
        predicates.add(predicateCol3);

        // ...
        criteriaQuery.select(itemRoot).where(predicates.toArray(new Predicate[]{}));

        return entityManager.createQuery(criteriaQuery).getResultList();
    }
}

如何为 AND 和 OR 条件编写 JPA FindBy 查询

How to Write JPA FindBy Query for AND and OR conditions

jpa

spring-data-jpa