Question

有没有什么方法可以使用一些弹簧数据CrudRepository来获取mongodb查询的结果？这是我的方法，它返回一个对象列表。

SELECT
            i.Item_Category
          , i.Total
          , i.Quarter
          , i.Year
          , (i.Total * 100.0) / y.Total as Pct
FROM (
      SELECT
            Item_Category
          , (SUM(Item_Amount) / 100000) AS Total
          , quarter(Invoice_date) AS Quarter
          , YEAR(Invoice_date) AS Year
      FROM `cmpsldata`
      WHERE Site = 'BDD1'
            AND Item_code LIKE 'FG%'
            AND Invoice_type = 'Excise'
      GROUP BY Year
             , Item_Category
             , Quarter
      ) i
      INNER JOIN (
            SELECT
                  (SUM(Item_Amount) / 100000) AS Total
                , quarter(Invoice_date) AS Quarter
                , YEAR(Invoice_date) AS Year
            FROM `cmpsldata`
            WHERE Site = 'BDD1'
                  AND Item_code LIKE 'FG%'
                  AND Invoice_type = 'Excise'
            GROUP BY Year
                   , Quarter
      ) y ON i.year = y.year
                  AND i.quarter = y.quarter
ORDER BY i.Total DESC

例如，它给了我这个结果。

Query(value = "db.tweet_replies.aggregate([ {$match: { 'in_reply_parent_tweet_ID'  : {$exists : true}}}, {$group: { _id: '$in_reply_parent_tweet_ID', maxDate: {$max : { $cond: [ {$gt : ['authorization_date_time','$user_reply.authorization_date_time']},'$authorization_date_time','$user_reply.authorization_date_time']}}}}])")
List<fReply> findByInReplyParentPostID(final String inReplyParentPostID);

我想将此结果存储为类型化地图而不是对象列表。任何的想法？。在此先感谢：）

Answer 1

似乎没有简单的方法可以做到这一点，请看这个问题：Can JPA return results as a map?

也许你可以在你的CrudRepository之上创建一个服务，你可以从你所拥有的List转换到你想要的Map？

spring数据从mongodb聚合结果返回映射

1 个答案: