如果在 Spring Data JPA 中为空或为空，如何在 @Query 中跳过 @Param

Question

@Query(value = "Select f from Documents f " +
        "RIGHT JOIN f.documentStatus ds " +
        "where f.billingAccount.accountId  in :billingAccountIdList " +
        " and ds.statusCode in :paymentStatuses" +
        " and f.paymentDate < :paymentDate")
List<FinancialDocumentEntity> getFinancialDocumentsOverdue(@Param("billingAccountIdList")List<String> billingAccountIdList,
                                                           @Param("paymentStatuses") List<String> paymentStatuses,
                                                           @Param("paymentDate") Date paymentDate);

我有类似上面的查询。如果为 null 或为空，是否可以在查询方法中跳过搜索参数，例如 @Param("paymentStatuses")？

Answer 1

尝试改变

" and ds.statusCode in :paymentStatuses"

进入

" and (:paymentStatuses is null or ds.statusCode in :paymentStatuses)"

Answer 2

尝试改变

" and ds.statusCode in :paymentStatuses"

进入

" and (COALESCE(:paymentStatuses, null) is null or ds.statusCode in :paymentStatuses)"

此解决方案适用于空列表、空列表和包含 1 项或更多项的列表。