将mongoDB查询转换为Spring数据MongoDBjava代码

Question

我有以下 MongoDB 查询，但我不知道如何在 Spring 数据 java 代码、group 和 replaceRoot 操作中进行转换。

db.getCollection('operationData').aggregate([

    { $match: type: "OPERATION_CHEAP", amount: {$gte: 1000}, 
              createdAt: {$gte: ISODate("2020-01-24T23:00:00.000Z")}
    },

    { $project: { amount: 1, operationId: 1 } },

    { $sort: { amount: -1 } },

    { $group: { _id: '$operationId', g: { $first: {data: '$$ROOT'} }} }, <----
        
    { $replaceRoot: { newRoot: '$g.data' }}, <------
            
    { $sort: { amount: 1 } }

])

这是匹配操作的代码：

 Criteria criterias = new Criteria()
            .andOperator(Criteria.where(Operation.AMOUNT)
            .gte(minAmount)
            .and(Operation.TYPE).is(OperationTypeEnum.CHEAP_OPERATION)
            .and("createdAt").gte(startDate).lte(endDate));

 MatchOperation matchOperation = Aggregation.match(criterias);

这是项目运行的代码：

ProjectionOperation projectionOperation = Aggregation.project("amount", "operationId");

这是聚合操作：

Aggregation aggregation = Aggregation.newAggregation(matchOperation, projectionOperation,
                                                     sort(direction, "amount"));
AggregationResults<OperationDataVO> aggregate = mongoTemplate.aggregate(aggregation, 
                                                     COLLECTION, OperationDataVO.class);

我不知道如何创建和集成 GroupOperation

Answer 1

试试这个方法：

Aggregation.group("operationId").first("$$ROOT").as("g");
Aggregation.replaceRoot("g");

将mongoDB查询转换为Spring数据MongoDBjava代码

Convert mongoDB query into Spring Data MongoDB java code

java

mongodb

spring-data

mongodb-query

spring-data-mongodb