object BSONAggregationFramework extends AggregationFramework[BSONSerializationPack.type]
- Annotations
- @deprecated
- Deprecated
(Since version 0.16.0) Internal: will be made private
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- By Inheritance
- BSONAggregationFramework
- AggregationFramework
- AggregationPipeline
- SortAggregation
- SliceAggregation
- GroupAggregation
- ImplicitCommandHelpers
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- Public
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Type Members
- case class AddFields(specifications: P.Document) extends PipelineOperator with Product with Serializable
$addFields stage.
$addFields stage.
- specifications
The fields to include. The resulting objects will also contain these fields.
- Definition Classes
- AggregationFramework
- Since
MongoDB 3.4
- case class Bucket(groupBy: P.Value, boundaries: Seq[P.Value], default: String)(output: (String, AggregationFramework.GroupFunction)*) extends PipelineOperator with Product with Serializable
$bucket aggregation stage.
$bucket aggregation stage.
- Definition Classes
- AggregationFramework
- case class BucketAuto(groupBy: P.Value, buckets: Int, granularity: Option[String])(output: (String, AggregationFramework.GroupFunction)*) extends PipelineOperator with Product with Serializable
$bucket aggregation stage.
$bucket aggregation stage.
- Definition Classes
- AggregationFramework
- Since
MongoDB 3.4 Categorizes incoming documents into a specific number of groups, called buckets, based on a specified expression. Bucket boundaries are automatically determined in an attempt to evenly distribute the documents into the specified number of buckets. Document fields identifier must be prefixed with
$
.
- final class ChangeStream extends PipelineOperator
Low level pipeline operator which allows to open a tailable cursor against subsequent change events of a given collection.
Low level pipeline operator which allows to open a tailable cursor against subsequent change events of a given collection.
For common use-cases, you might prefer to use the
watch
operator on a collection.Note: the target mongo instance MUST be a replica-set (even in the case of a single node deployement).
- Definition Classes
- AggregationFramework
- Since
MongoDB 3.6
- case class CollStats(latencyStatsHistograms: Boolean, storageStatsScale: Option[Double], count: Boolean) extends Product with Serializable
$collStats aggregation stage.
$collStats aggregation stage.
- Definition Classes
- AggregationFramework
- case class Count(outputName: String) extends PipelineOperator with Product with Serializable
$count of the number of documents input.
$count of the number of documents input.
- outputName
the name of the output field which has the count as its value
- Definition Classes
- AggregationFramework
- Since
MongoDB 3.4
- case class CurrentOp(allUsers: Boolean = false, idleConnections: Boolean = false, idleCursors: Boolean = false, idleSessions: Boolean = true, localOps: Boolean = false) extends PipelineOperator with Product with Serializable
- allUsers
(Defaults to
false
)- idleConnections
if set to true, all operations including idle connections will be returned (Defaults to
false
)- idleCursors
(Defaults to
false
; new in 4.2)- idleSessions
(Defaults to
true
; new in 4.0)- localOps
(Defaults to false; new in 4.0)
- Definition Classes
- AggregationFramework
- Since
MongoDB 3.6
- case class Facet(specifications: Iterable[(String, AggregationFramework.Pipeline)]) extends PipelineOperator with Product with Serializable
Processes multiple aggregation pipelines within a single stage on the same set of input documents.
Processes multiple aggregation pipelines within a single stage on the same set of input documents.
Each sub-pipeline has its own field in the output document where its results are stored as an array of documents.
- specifications
the subpipelines to run
- Definition Classes
- AggregationFramework
- See also
https://docs.mongodb.com/manual/reference/operator/aggregation/facet/
- class GeoNear extends PipelineOperator with Product with Serializable
$geoNear aggregation stage, that outputs documents in order of nearest to farthest from a specified point.
$geoNear aggregation stage, that outputs documents in order of nearest to farthest from a specified point.
- Definition Classes
- AggregationFramework
- case class GraphLookup(from: String, startWith: P.Value, connectFromField: String, connectToField: String, as: String, maxDepth: Option[Int] = None, depthField: Option[String] = None, restrictSearchWithMatch: Option[P.Value] = None) extends PipelineOperator with Product with Serializable
The $graphLookup aggregation stage.
The $graphLookup aggregation stage.
- from
the target collection for the $graphLookup operation to search
- startWith
the expression that specifies the value of the
connectFromField
with which to start the recursive search- connectFromField
the field name whose value
$graphLookup
uses to recursively match against theconnectToField
of other documents in the collection- connectToField
the field name in other documents against which to match the value of the field specified by the
connectFromField
parameter- as
the name of the array field added to each output document
- maxDepth
an optional non-negative integral number specifying the maximum recursion depth
- depthField
an optional name for a field to add to each traversed document in the search path
- restrictSearchWithMatch
an optional filter expression
- Definition Classes
- AggregationFramework
- Since
MongoDB 3.4
- case class Group(identifiers: P.Value)(ops: (String, AggregationFramework.GroupFunction)*) extends PipelineOperator with Product with Serializable
$groups documents together to calculate aggregates on document collections.
$groups documents together to calculate aggregates on document collections. This command aggregates on arbitrary identifiers. Document fields identifier must be prefixed with
$
.- identifiers
any BSON value acceptable by mongodb as identifier
- ops
the sequence of operators specifying aggregate calculation
- Definition Classes
- AggregationFramework
- case class GroupField(idField: String)(ops: (String, AggregationFramework.GroupFunction)*) extends PipelineOperator with Product with Serializable
$groups documents together to calculate aggregates on document collections.
$groups documents together to calculate aggregates on document collections. This command aggregates on one field.
- idField
the name of the field to aggregate on
- ops
the sequence of operators specifying aggregate calculation
- Definition Classes
- AggregationFramework
- case class GroupMulti(idFields: (String, String)*)(ops: (String, AggregationFramework.GroupFunction)*) extends PipelineOperator with Product with Serializable
$groups documents together to calculate aggregates on document collections.
$groups documents together to calculate aggregates on document collections. This command aggregates on multiple fields, and they must be named.
- idFields
The fields to aggregate on, and the names they should be aggregated under.
- ops
the sequence of operators specifying aggregate calculation
- Definition Classes
- AggregationFramework
- case class IndexStatAccesses(ops: Long, since: Long) extends Product with Serializable
- ops
the number of operations that used the index
- since
the time from which MongoDB gathered the statistics
- Definition Classes
- AggregationFramework
- case class IndexStatsResult(name: String, key: P.Document, host: String, accesses: IndexStatAccesses) extends Product with Serializable
- name
the index name
- key
the key specification
- host
the hostname and port of the mongod
- accesses
the index statistics
- Definition Classes
- AggregationFramework
- case class Limit(limit: Int) extends PipelineOperator with Product with Serializable
$limits the number of documents that pass through the stream.
$limits the number of documents that pass through the stream.
- limit
the number of documents to allow through
- Definition Classes
- AggregationFramework
- case class ListLocalSessions(expression: P.Document) extends PipelineOperator with Product with Serializable
$listLocalSessions aggregation stage.
$listLocalSessions aggregation stage.
- Definition Classes
- AggregationFramework
- Since
MongoDB 3.6
- case class ListSessions(expression: P.Document) extends PipelineOperator with Product with Serializable
$listSessions aggregation stage.
$listSessions aggregation stage.
- Definition Classes
- AggregationFramework
- Since
MongoDB 3.6
- case class Lookup(from: String, localField: String, foreignField: String, as: String) extends PipelineOperator with Product with Serializable
Performs a left outer join to an unsharded collection in the same database to filter in documents from the "joined" collection for processing.
Performs a left outer join to an unsharded collection in the same database to filter in documents from the "joined" collection for processing.
- from
the collection to perform the join with
- localField
the field from the documents input
- foreignField
the field from the documents in the
from
collection- as
the name of the new array field to add to the input documents
- Definition Classes
- AggregationFramework
- Since
MongoDB 3.2
- case class Match(predicate: P.Document) extends PipelineOperator with Product with Serializable
Filters out documents from the stream that do not match the predicate.
Filters out documents from the stream that do not match the predicate.
- predicate
the query that documents must satisfy to be in the stream
- Definition Classes
- AggregationFramework
- case class Merge(intoDb: String, intoCollection: String, on: Seq[String], whenMatched: Option[String], let: Option[P.Document], whenNotMatched: Option[String]) extends PipelineOperator with Product with Serializable
$merge aggregation stage.
$merge aggregation stage.
- intoDb
the name of the
into
database- intoCollection
the name of the
into
collection
- Definition Classes
- AggregationFramework
- Since
MongoDB 4.2
- case class Out(collection: String) extends PipelineOperator with Product with Serializable
Takes the documents returned by the aggregation pipeline and writes them to a specified collection
Takes the documents returned by the aggregation pipeline and writes them to a specified collection
- collection
the name of the output collection
- Definition Classes
- AggregationFramework
- case class Project(specifications: P.Document) extends PipelineOperator with Product with Serializable
Reshapes a document stream by renaming, adding, or removing fields.
Reshapes a document stream by renaming, adding, or removing fields. Also uses Project to create computed values or sub-objects.
- specifications
The fields to include. The resulting objects will contain only these fields.
- Definition Classes
- AggregationFramework
- case class Redact(expression: P.Document) extends PipelineOperator with Product with Serializable
Restricts the contents of the documents based on information stored in the documents themselves.
Restricts the contents of the documents based on information stored in the documents themselves. http://docs.mongodb.org/manual/reference/operator/aggregation/redact/#pipe._S_redact Redact
- expression
the redact expression
- Definition Classes
- AggregationFramework
- case class ReplaceRoot(newRoot: P.Document) extends PipelineOperator with Product with Serializable
Promotes a specified document to the top level and replaces all other fields.
Promotes a specified document to the top level and replaces all other fields. The operation replaces all existing fields in the input document, including the _id field. https://docs.mongodb.com/manual/reference/operator/aggregation/replaceRoot
- newRoot
The new root object
- Definition Classes
- AggregationFramework
- case class ReplaceRootField(newRoot: String) extends PipelineOperator with Product with Serializable
Promotes a specified document to the top level and replaces all other fields.
Promotes a specified document to the top level and replaces all other fields. The operation replaces all existing fields in the input document, including the _id field. https://docs.mongodb.com/manual/reference/operator/aggregation/replaceRoot
- newRoot
The field name to become the new root
- Definition Classes
- AggregationFramework
- case class ReplaceWith(replacementDocument: P.Document) extends PipelineOperator with Product with Serializable
The $replaceWith aggregation stage.
The $replaceWith aggregation stage.
- Definition Classes
- AggregationFramework
- Since
MongoDB 4.2
- case class Sample(size: Int) extends PipelineOperator with Product with Serializable
$sample aggregation stage, that randomly selects the specified number of documents from its input.
$sample aggregation stage, that randomly selects the specified number of documents from its input.
- size
the number of documents to return
- Definition Classes
- AggregationFramework
- case class Set(expression: P.Document) extends PipelineOperator with Product with Serializable
$set aggregation stage
$set aggregation stage
- Definition Classes
- AggregationFramework
- case class Skip(skip: Int) extends PipelineOperator with Product with Serializable
$skips over a number of documents before passing all further documents along the stream.
$skips over a number of documents before passing all further documents along the stream.
- skip
the number of documents to skip
- Definition Classes
- AggregationFramework
- case class Sort(fields: AggregationFramework.SortOrder*) extends PipelineOperator with Product with Serializable
$sorts the stream based on the given fields.
$sorts the stream based on the given fields.
- fields
the fields to sort by
- Definition Classes
- AggregationFramework
- case class SortByCount(expression: P.Value) extends PipelineOperator with Product with Serializable
The $sortByCount aggregation stage.
The $sortByCount aggregation stage.
- Definition Classes
- AggregationFramework
- Since
MongoDB 3.4
- case class SortByFieldCount(field: String) extends PipelineOperator with Product with Serializable
The $sortByCount aggregation stage.
The $sortByCount aggregation stage.
- field
the field name
- Definition Classes
- AggregationFramework
- Since
MongoDB 3.4
- case class Unset(field: String, otherFields: Seq[String]) extends PipelineOperator with Product with Serializable
The $unset aggregation stage.
The $unset aggregation stage.
- field
the field name
- Definition Classes
- AggregationFramework
- Since
MongoDB 4.2
- class Unwind extends PipelineOperator with Product with Serializable
- Definition Classes
- AggregationFramework
- case class UnwindField(field: String) extends Unwind with Product with Serializable
Turns a document with an array into multiple documents, one document for each element in the array.
Turns a document with an array into multiple documents, one document for each element in the array. http://docs.mongodb.org/manual/reference/aggregation/unwind/#_S_unwind
- field
the name of the array to unwind
- Definition Classes
- AggregationFramework
- trait ImplicitlyDocumentProducer extends AnyRef
- Definition Classes
- ImplicitCommandHelpers
- case class AddFieldToSet extends AggregationFramework.GroupFunction with Product with Serializable
The $addToSet group accumulator.
The $addToSet group accumulator.
- Definition Classes
- GroupAggregation
- case class AddToSet extends AggregationFramework.GroupFunction with Product with Serializable
The $addToSet group accumulator.
The $addToSet group accumulator.
- Definition Classes
- GroupAggregation
- case class Ascending extends AggregationFramework.SortOrder with Product with Serializable
Ascending sort order
Ascending sort order
- Definition Classes
- SortAggregation
- case class Avg extends AggregationFramework.GroupFunction with Product with Serializable
The $avg group accumulator.
The $avg group accumulator.
- Definition Classes
- GroupAggregation
- case class AvgField extends AggregationFramework.GroupFunction with Product with Serializable
The $avg group accumulator.
The $avg group accumulator.
- Definition Classes
- GroupAggregation
- case class Descending extends AggregationFramework.SortOrder with Product with Serializable
Descending sort order
Descending sort order
- Definition Classes
- SortAggregation
- case class First extends AggregationFramework.GroupFunction with Product with Serializable
The $field group accumulator.
The $field group accumulator.
- Definition Classes
- GroupAggregation
- case class FirstField extends AggregationFramework.GroupFunction with Product with Serializable
The $field group accumulator.
The $field group accumulator.
- Definition Classes
- GroupAggregation
- sealed trait GroupFunction extends AnyRef
Represents one of the group/accumulator operators, for the
$group
aggregation.Represents one of the group/accumulator operators, for the
$group
aggregation. Operation.- Definition Classes
- GroupAggregation
- See also
https://docs.mongodb.com/manual/reference/operator/aggregation/group/#accumulator-operator
- case class Last extends AggregationFramework.GroupFunction with Product with Serializable
The $field group accumulator.
The $field group accumulator.
- Definition Classes
- GroupAggregation
- case class LastField extends AggregationFramework.GroupFunction with Product with Serializable
The $field group accumulator.
The $field group accumulator.
- Definition Classes
- GroupAggregation
- case class Max extends AggregationFramework.GroupFunction with Product with Serializable
The $max group accumulator.
The $max group accumulator.
- Definition Classes
- GroupAggregation
- case class MaxField extends AggregationFramework.GroupFunction with Product with Serializable
The $max group accumulator.
The $max group accumulator.
- Definition Classes
- GroupAggregation
- case class MergeObjects extends AggregationFramework.GroupFunction with Product with Serializable
The $mergeObjects group accumulator.
The $mergeObjects group accumulator.
- Definition Classes
- GroupAggregation
- sealed trait MetadataKeyword extends AnyRef
- Definition Classes
- SortAggregation
- case class MetadataSort extends AggregationFramework.SortOrder with Product with Serializable
Metadata sort order.
Metadata sort order.
- Definition Classes
- SortAggregation
- case class Min extends AggregationFramework.GroupFunction with Product with Serializable
The $min group accumulator.
The $min group accumulator.
- Definition Classes
- GroupAggregation
- case class MinField extends AggregationFramework.GroupFunction with Product with Serializable
The $min group accumulator.
The $min group accumulator.
- Definition Classes
- GroupAggregation
- type Pipeline = (PipelineOperator, List[PipelineOperator])
Aggregation pipeline (with at least one stage operator)
Aggregation pipeline (with at least one stage operator)
- Definition Classes
- AggregationPipeline
- trait PipelineOperator extends AnyRef
One of MongoDBs pipeline operators for aggregation.
One of MongoDBs pipeline operators for aggregation. Sealed as these are defined in the MongoDB specifications, and clients should not have custom operators.
- Definition Classes
- AggregationPipeline
- case class Push extends AggregationFramework.GroupFunction with Product with Serializable
The $push group accumulator.
The $push group accumulator.
- Definition Classes
- GroupAggregation
- case class PushField extends AggregationFramework.GroupFunction with Product with Serializable
The $push group accumulator.
The $push group accumulator.
- Definition Classes
- GroupAggregation
- final class Slice extends AggregationFramework.PipelineOperator
Returns a subset of an array.
Returns a subset of an array. https://docs.mongodb.com/manual/reference/operator/aggregation/slice/
- Definition Classes
- SliceAggregation
- sealed trait SortOrder extends AnyRef
Represents that a field should be sorted on, as well as whether it should be ascending or descending.
Represents that a field should be sorted on, as well as whether it should be ascending or descending.
- Definition Classes
- SortAggregation
- case class StdDevPop extends AggregationFramework.GroupFunction with Product with Serializable
The $stdDevPop group accumulator.
The $stdDevPop group accumulator.
- Definition Classes
- GroupAggregation
- Since
MongoDB 3.2
- case class StdDevPopField extends AggregationFramework.GroupFunction with Product with Serializable
The $stdDevPop for a single field.
The $stdDevPop for a single field.
- Definition Classes
- GroupAggregation
- Since
MongoDB 3.2
- case class StdDevSamp extends AggregationFramework.GroupFunction with Product with Serializable
The $stdDevSamp group accumulator
The $stdDevSamp group accumulator
- Definition Classes
- GroupAggregation
- Since
MongoDB 3.2
- case class StdDevSampField extends AggregationFramework.GroupFunction with Product with Serializable
The $stdDevSamp for a single field
The $stdDevSamp for a single field
- Definition Classes
- GroupAggregation
- Since
MongoDB 3.2
- case class Sum extends AggregationFramework.GroupFunction with Product with Serializable
The $sum group accumulator.
The $sum group accumulator.
- Definition Classes
- GroupAggregation
- case class SumField extends AggregationFramework.GroupFunction with Product with Serializable
The $sum group accumulator.
The $sum group accumulator.
- Definition Classes
- GroupAggregation
Deprecated Type Members
- case class Aggregate(pipeline: Seq[AggregationFramework.PipelineOperator], explain: Boolean = false, allowDiskUse: Boolean, cursor: Option[Cursor], wireVersion: MongoWireVersion, bypassDocumentValidation: Boolean, readConcern: Option[ReadConcern]) extends CollectionCommand with CommandWithPack[pack.type] with CommandWithResult[AggregationResult] with Product with Serializable
- pipeline
the sequence of MongoDB aggregation operations
- explain
specifies to return the information on the processing of the pipeline
- allowDiskUse
enables writing to temporary files
- cursor
the cursor object for aggregation
- bypassDocumentValidation
available only if you specify the $out aggregation operator
- readConcern
the read concern
- Definition Classes
- AggregationFramework
- Annotations
- @deprecated
- Deprecated
(Since version 0.12.7) Use
api.collections.Aggregator
- Since
MongoDB 3.2
- case class AggregationResult(firstBatch: List[P.Document], cursor: Option[ResultCursor] = None) extends Product with Serializable
- firstBatch
the documents of the first batch
- cursor
the cursor from the result, if any
- Definition Classes
- AggregationFramework
- Annotations
- @deprecated
- Deprecated
(Since version 0.12.7) Use
api.collections.Aggregator
- See also
- case class Cursor(batchSize: Int) extends Product with Serializable
- batchSize
the initial batch size for the cursor
- Definition Classes
- AggregationFramework
- Annotations
- @deprecated
- Deprecated
(Since version 0.12.7) Use
api.collections.Aggregator
- case class Filter(input: P.Value, as: String, cond: P.Document) extends PipelineOperator with Product with Serializable
The $filter aggregation stage.
The $filter aggregation stage.
- input
the expression that resolves to an array
- as
The variable name for the element in the input array. The as expression accesses each element in the input array by this variable.
- cond
the expression that determines whether to include the element in the resulting array
- Definition Classes
- AggregationFramework
- Annotations
- @deprecated
- Deprecated
(Since version 0.19.4) Not a pipeline operator (stage)
- case class SumValue extends AggregationFramework.GroupFunction with Product with Serializable
- Definition Classes
- GroupAggregation
- Annotations
- @deprecated
- Deprecated
(Since version 0.12.0) Use
SumAll
Value Members
- object Filter extends Serializable
Filter companion
Filter companion
- Definition Classes
- AggregationFramework
- object GeoNear extends Serializable
- Definition Classes
- AggregationFramework
- object IndexStats extends PipelineOperator with Product with Serializable
$indexStats aggregation stage.
$indexStats aggregation stage.
- Definition Classes
- AggregationFramework
- Since
MongoDB 3.2
- object PlanCacheStats extends PipelineOperator with Product with Serializable
$planCacheStats aggregation stage.
$planCacheStats aggregation stage.
- Definition Classes
- AggregationFramework
- Since
MongoDB 4.2
- object Unwind extends Serializable
- Definition Classes
- AggregationFramework
- object ImplicitlyDocumentProducer
- Definition Classes
- ImplicitCommandHelpers
- final def !=(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
- final def ##(): Int
- Definition Classes
- AnyRef → Any
- final def ==(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
- final def asInstanceOf[T0]: T0
- Definition Classes
- Any
- final lazy val builder: Builder[pack.type]
- Attributes
- protected
- Definition Classes
- AggregationFramework
- def clone(): AnyRef
- Attributes
- protected[lang]
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.CloneNotSupportedException]) @native()
- final def eq(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef
- def equals(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef → Any
- def finalize(): Unit
- Attributes
- protected[lang]
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.Throwable])
- final def getClass(): Class[_ <: AnyRef]
- Definition Classes
- AnyRef → Any
- Annotations
- @native()
- def hashCode(): Int
- Definition Classes
- AnyRef → Any
- Annotations
- @native()
- final def isInstanceOf[T0]: Boolean
- Definition Classes
- Any
- final def ne(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef
- final def notify(): Unit
- Definition Classes
- AnyRef
- Annotations
- @native()
- final def notifyAll(): Unit
- Definition Classes
- AnyRef
- Annotations
- @native()
- val pack: BSONSerializationPack.type
- Definition Classes
- BSONAggregationFramework → AggregationPipeline → ImplicitCommandHelpers
- final def pipe(name: String, arg: Value): Document
- Attributes
- protected
- Definition Classes
- AggregationFramework
- Annotations
- @inline()
- final def synchronized[T0](arg0: => T0): T0
- Definition Classes
- AnyRef
- def toString(): String
- Definition Classes
- AnyRef → Any
- final def wait(): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.InterruptedException])
- final def wait(arg0: Long, arg1: Int): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.InterruptedException])
- final def wait(arg0: Long): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.InterruptedException]) @native()
- object GroupFunction
Factory to declare custom call to a group function.
Factory to declare custom call to a group function.
- Definition Classes
- GroupAggregation
- object PipelineOperator
Only for advanced user: Factory for stage not already provided in the API.
Only for advanced user: Factory for stage not already provided in the API.
For example for
{ $sample: { size: 2 } }
import scala.concurrent.ExecutionContext import reactivemongo.api.bson.{ BSONDocument, BSONInteger, BSONString } import reactivemongo.api.bson.collection.BSONCollection def foo(coll: BSONCollection)(implicit ec: ExecutionContext) = coll.aggregateWith[BSONDocument]() { agg => import agg.PipelineOperator val stage = PipelineOperator(BSONDocument( f"$$sample" -> BSONDocument("size" -> 2))) stage -> List.empty }
- Definition Classes
- AggregationPipeline
- object Slice
import scala.concurrent.ExecutionContext import reactivemongo.api.bson.{ BSONDocument, BSONInteger, BSONString } import reactivemongo.api.bson.collection.BSONCollection def foo(coll: BSONCollection)(implicit ec: ExecutionContext) = { coll.aggregateWith[BSONDocument]() { agg => import agg.{ Project, Slice } // Define the pipeline stages Project(BSONDocument( "name" -> 1, "favorites" -> Slice( array = BSONString(f"$$favorites"), n = BSONInteger(3)).makePipe)) -> List.empty } }
- Definition Classes
- SliceAggregation
- object SumAll extends AggregationFramework.GroupFunction with Product with Serializable
The
$sum: 1
group accumulator.The
$sum: 1
group accumulator.- Definition Classes
- GroupAggregation
- object TextScore extends AggregationFramework.MetadataKeyword with Product with Serializable
References the score associated with the corresponding
$text
query for each matching document.References the score associated with the corresponding
$text
query for each matching document.- Definition Classes
- SortAggregation