如果Spring Data JPA中的@Param为null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);

我有上面这样的查询。如果为空或为空，则可以跳过查询方法中的搜索参数，例如@Param（"paymentStatuse"）？

Answer 1

试着改变

" and ds.statusCode in :paymentStatuses"

成

" 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。

Answer 2

试着改变

" and ds.statusCode in :paymentStatuses"

成

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