Question

我有一个运行Spring Data + Hibernate的应用程序和以下查询：

@Query(value = "SELECT NEW com.foo.dto.OfertaBancoDto(y,(SELECT CASE a.id WHEN NULL THEN 0 ELSE 1 END FROM Banco b LEFT JOIN b.blackList a)) FROM Oferta y WHERE y.id IN (SELECT DISTINCT (o.id) FROM Oferta o WHERE o.status IN (?1) AND o.dataRemocao IS NULL AND o.status = 1)",
        countQuery = "SELECT COUNT(y) FROM Oferta y WHERE y.id IN (SELECT DISTINCT (o.id) FROM Oferta o WHERE o.status IN (?1) AND o.dataRemocao IS NULL AND o.status = 1)")
Page<OfertaBancoDto> randomSearch(Set<StatusOferta> filtroStatus, Pageable pageable);

每次我尝试发出一个orderby：

new PageRequest(0, 10, new Sort(Direction.ASC, "titulo"));

结果查询是（b.titulo是问题，因为b表示错误的表）：

SELECT NEW com.foo.dto.OfertaBancoDto(y,(SELECT CASE a.id WHEN NULL THEN 0 ELSE 1 END FROM com.foo.entity.Banco b LEFT JOIN b.blackList a)) FROM com.foo.entity.Oferta y WHERE y.id IN (SELECT DISTINCT (o.id) FROM com.foo.entity.Oferta o WHERE o.status IN (?1) AND o.dataRemocao IS NULL AND o.status = 1) order by b.titulo asc

正确的查询应该是：

SELECT NEW com.foo.dto.OfertaBancoDto(y,(SELECT CASE a.id WHEN NULL THEN 0 ELSE 1 END FROM com.foo.entity.Banco b LEFT JOIN b.blackList a)) FROM com.foo.entity.Oferta y WHERE y.id IN (SELECT DISTINCT (o.id) FROM com.foo.entity.Oferta o WHERE o.status IN (?1) AND o.dataRemocao IS NULL AND o.status = 1) order by y.titulo asc

如何指定orderby应该过滤的表？

Answer 1

您的存储库的签名是什么？看起来应该是这样的：

public interface FooRepo extends JpaRepository<T, ID> {
....
}

我怀疑你使用过Banco for T.所以要解决这个问题，你可以试试2个选项：

1）将方法移动到Oferta的存储库

2）将此方法移至Custom Repository（我认为这样更好）http://docs.spring.io/spring-data/jpa/docs/current/reference/html/#repositories.custom-implementation

Answer 2

我猜你的 pageable 是这样的：

Sort sort = new Sort(Sort.Direction.DESC, "id");
Pageable pageable = new PageRequest(offset, limit,sort)

不要使用排序更改您的可分页，例如：

// Sort sort = new Sort(Sort.Direction.DESC, "id");
Pageable pageable = new PageRequest(offset, limit)

使用sql实现按功能排序：

@Query(value = "SELECT NEW com.foo.dto.OfertaBancoDto(y,(SELECT CASE a.id WHEN NULL THEN 0 ELSE 1 END FROM Banco b LEFT JOIN b.blackList a)) FROM Oferta y WHERE y.id IN (SELECT DISTINCT (o.id) FROM Oferta o WHERE o.status IN (?1) AND o.dataRemocao IS NULL AND o.status = 1) order by y.titulo asc ",
    countQuery = "SELECT COUNT(y) FROM Oferta y WHERE y.id IN (SELECT DISTINCT (o.id) FROM Oferta o WHERE o.status IN (?1) AND o.dataRemocao IS NULL AND o.status = 1)")

Page randomSearch(Set filtroStatus, Pageable pageable);

错误表上的Spring数据排序

2 个答案: