mongo_aggregation library

Mongodb aggregation library

Simplifies to create aggregation pipelines using Dart code.

Basic usage:

final db = Db('mongodb://127.0.0.1/testdb');
final pipeline = AggregationPipelineBuilder()
  .addStage(
    Match(where.eq('status', 'A').map['\$query']))
  .addStage(
    Group(
      id: Field('cust_id'),
      fields: {
        'total': Sum(Field('amount'))
      }
    )).build();
final result =
  await DbCollection(db, 'orders')
    .aggregateToStream(pipeline).toList();

Full mongoDB documentation on aggregation queries: https://docs.mongodb.com/manual/aggregation/

Classes

Abs

$abs operator

Accumulator

Basic accumulation operator

Add

$add operator

AddFields

$addFields aggregation stage

AddToSet

$addToSet operator

AEIterator<T>

Iterator for AEList

AEList

Aggregation expression's list

AEObject

Aggregation expression's object

AggregationExpr

Aggregation expression

AggregationPipelineBuilder

Aggregation pipeline builder

AggregationStage

Aggregation stage base

And

$and operator

ArrayElemAt

$arrayElemAt operator

ArrayToObject

$arrayToObject operator

Avg

$avg operator

Box

https://docs.mongodb.com/manual/reference/operator/query/box/#mongodb-query-op.-box

Bucket

$bucket aggregation stage

BucketAuto

$bucketAuto aggregation stage

Builder

Builder interface

Case

Case branch for Switch operator

Ceil

$ceil operator

Center

https://docs.mongodb.com/manual/reference/operator/query/box/#mongodb-query-op.-box

CenterSphere

https://docs.mongodb.com/manual/reference/operator/query/box/#mongodb-query-op.-box

Cmp

$cmp operator

Concat

$concat operator

ConcatArrays

$concatArrays operator

Cond

$cond operator

Const

Constant expression

Convert

$convert operator

Count

$count aggregation stage

DateFromParts

$dateFromParts

DateFromString

$dateFromString operator

DateToParts

$dateToParts operator

DayOfMonth

$dayOfMonth operator

DayOfWeek

$dayOfWeek operator

DayOfYear

$dayOfYear operator

Divide

$divide operator

Eq

$eq operator

Exp

$exp operator

Expr

$expr operator

Facet

$facet aggregation stage

Field

Field path expression

Filter

$filter operator

First

$first operator

Floor

$floor operator

Geometry

https://docs.mongodb.com/manual/reference/operator/query/geometry/#mongodb-query-op.-geometry

GeoNear

$geoNear

Granularity

Granularity for BucketAuto

GraphLookup

$graphLookup

Group

$group aggregation stage

Gt

$gt operator

Gte

$gte operator

Hour

$hour operator

IfNull

$ifNull operator

In

$in operator

IndexOfArray

$indexOfArray operator

IndexOfBytes

$indexOfBytes operator

IndexOfCP

$indexOfCP operator

IsArray

$isArray operator

IsoDateFromParts

ISO date from parts

IsoDayOfWeek

$isoDayOfWeek operator

IsoWeek

$isoWeek operator

IsoWeekYear

$isoWeekYear operator

Last

$last operator

Let

$let operator

Limit

$limit aggregation stage

Literal

Literal expression

Ln

$ln operator

Log

$log operator

Log10

$log10 operator

Lookup

$lookup aggregation stage

Lt

$lt operator

Lte

lte operator

Ltrim

$ltrim operator

MapOp

$map operator

Match

$match aggregation stage

Max

$max operator

MergeObjects

$mergeObjects operator

Millisecond

$millisecond operator

Min

$min operator

Minute

$minute operator

Mod

$mod operator

Month

$month operator

Multiply

$multiply operator

Ne

$ne operator

Not

$not operator

ObjectToArray

$objectToArray

Operator

Basic aggregation operator

Or

$or operator

Output

Creates an "output" document for the setWinowsDield stage

Pow

$pow operator

Project

$project aggregation stage

Push

$push operator

Range

$range operator

Reduce

$reduce operator

RegexFind

$regexFind operator

RegexFindAll

$regexFindAll operator

RegexMatch

$regexMatch operator

ReplaceRoot

$replaceRoot aggregation stage

ReplaceWith

$replaceWith aggregation stage

ReverseArray

$reverseArray operator

Round

$round operator

Rtrim

$rtrim operator

Sample

$sample aggregation stage

Second

$second operator

SetStage

$set aggregation stage

SetWindowFields

$setWindowFields aggregation stage

ShapeOperator

There is

Size

$size operator

Skip

$skip aggregation stage

Slice

$slice operator

Sort

$sort aggregation stage

SortByCount

$sortByCount

Split

$split operator

Sqrt

$sqrt operator

StdDevPop

$stdDevPop operator

StdDevSamp

$stdDevSamp operator

StrCaseCmp

$strcasecmp operator

StrLenBytes

$strLenBytes operator

StrLenCP

$strLenCP operator

SubstrBytes

$substrBytes operator

SubstrCP

$substrCP operator

Subtract

$subtract operator

Sum

$sum operator

Switch

$switch operator

ToBool

$toBool operator

ToDate

$toDate operator

ToDecimal

$toDecimal operator

ToDouble

$toDouble operator

ToInt

$toInt operator

ToLong

$toLong operator

ToLower

$toLower operator

ToObjectId

$toObjectId operator

ToString

$toString operator

ToUpper

$toUpper operator

Trim

$trim operator

Trunc

$trunc operator

Type

$type operator

UnionWith

$unionWith aggregation stage

Unset

$unset aggregation stage

Unwind

$unwind aggregation stage

Var

Aggregation expression's variable

Week

$week operator

Year

$year operator

Zip

$zip operator

Enums

GeometryObjectType