Reputation:
I have the following MongoDB query and I dont know how to convert in Spring Data java code, the group
and replaceRoot
operations.
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: '$$ROOT'} }} }, <----
{ $replaceRoot: { newRoot: '$g.data' }}, <------
{ $sort: { amount: 1 } }
])
This is the code for the match operation:
Criteria criterias = new Criteria()
.andOperator(Criteria.where(Operation.AMOUNT)
.gte(minAmount)
.and(Operation.TYPE).is(OperationTypeEnum.CHEAP_OPERATION)
.and("createdAt").gte(startDate).lte(endDate));
MatchOperation matchOperation = Aggregation.match(criterias);
This is the code for the project operation:
ProjectionOperation projectionOperation = Aggregation.project("amount", "operationId");
And this is the Aggregation operation:
Aggregation aggregation = Aggregation.newAggregation(matchOperation, projectionOperation,
sort(direction, "amount"));
AggregationResults<OperationDataVO> aggregate = mongoTemplate.aggregate(aggregation,
COLLECTION, OperationDataVO.class);
I cant find out how to create and integrate the GroupOperation
Upvotes: 1
Views: 280
Reputation: 13093
Try this way:
Aggregation.group("operationId").first("$$ROOT").as("g");
Aggregation.replaceRoot("g");
Upvotes: 1