Question

我正在使用spring-data-mongodb v1.10.3 聚合查询在cli / robo3t中有效，但我似乎无法将其转换为Spring。

>>> re.findall(r'(?:^|[ \t]+)([1-9]|[1-2][0-9]|30)(?=[ \t]|$)',' '.join([str(i) for i in range(-5000,5000)]), re.M)
['1', '2', '3', '4', '5', '6', '7', '8', '9', '10', '11', '12', '13', '14', '15', '16', '17', '18', '19', '20', '21', '22', '23', '24', '25', '26', '27', '28', '29', '30']

Spring代码在不引发任何错误的意义上“有效”，但是返回空结果。

db.getCollection('transaction').aggregate(
[ 
{ 
    $match : { 
        effectiveDate : { 
            $gte : ISODate("2018-09-06T04:00:00.000Z") , // Spring aggregation puts these clauses as $gte : { $date: <date> }
            $lte : ISODate("2018-09-11T03:59:59.000Z")
            } , 
         status : "external_received"}
     } 
     , 
 { 
     $group : { 
         _id : { portfolio : "$portfolio" , processor : "$processor" , transactionType : "$transactionType"} , 
         amount : { $sum : "$amount"}
         }
     }
 ]
)

更新： Spring代码在public List<TransactionReport> getTransactionReport(Date begin, Date end) { Aggregation aggregation = portfolioAggregation(begin, end); System.out.println(aggregation.toString()); AggregationResults<TransactionReport> results = mongoTemplate.aggregate(aggregation, Transaction.class, TransactionReport.class); return results.getMappedResults(); } private Aggregation portfolioAggregation(Date begin, Date end) { Criteria f = Criteria.where("effectiveDate").gte(begin).lte(end).and("status").is("received"); MatchOperation filter = match(f); GroupOperation groupOperation = group("portfolio", "processor", "transactionType").sum("amount").as("amount"); return Aggregation.newAggregation(filter, groupOperation).withOptions(Aggregation.newAggregationOptions().cursor(getCursor()).build()); } private DBObject getCursor() { DBObject cursor = new BasicDBObject(); cursor.put("batchSize", 10); return cursor; }

中返回实际结果

结构为results.getRawResults()

仍然想出一种将结果优雅地序列化到TransactionReport类的方法

Spring Mongo-聚合查询可在CLI / Robo3t中使用，但不适用于Spring

0 个答案: