MapReduce

Configuration parameters for MapReduce operations

map: The mapping function
reduce: The reducing function
selection: Query selector to apply to input documents
inputSort: Criteria to use to sort the input documents.
limit: Limit the number of input documents to map
finalizer: JavaScript function applied to the output after the reduce function.
scope: Global variables made available to the map, reduce and finalizer functions.
jsMode: Whether to avoid converting intermediate values to BSON, leaving them as JavaScript objects instead. Setting this to true has implications on the size of the input, see the MongoDB mapReduce documentation for details.
verbose: Whether to include additional information, such as timing, in the results.

Annotations: @SuppressWarnings()

Linear Supertypes

Serializable, Serializable, Product, Equals, AnyRef, Any

Instance Constructors

new MapReduce(map: Expr, reduce: Expr, selection: slamdata.Predef.Option[Selector] = None, inputSort: slamdata.Predef.Option[NonEmptyList[(BsonField, SortDir)]] = None, limit: slamdata.Predef.Option[slamdata.Predef.Long] = None, finalizer: slamdata.Predef.Option[Expr] = None, scope: Scope = ListMap(), jsMode: slamdata.Predef.Option[slamdata.Predef.Boolean] = None, verbose: slamdata.Predef.Option[slamdata.Predef.Boolean] = None)

map
The mapping function
reduce
The reducing function
selection
Query selector to apply to input documents
inputSort
Criteria to use to sort the input documents.
limit
Limit the number of input documents to map
finalizer
JavaScript function applied to the output after the reduce function.
scope
Global variables made available to the map, reduce and finalizer functions.
jsMode
Whether to avoid converting intermediate values to BSON, leaving them as JavaScript objects instead. Setting this to true has implications on the size of the input, see the MongoDB mapReduce documentation for details.
verbose
Whether to include additional information, such as timing, in the results.

Value Members

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
def clone(): AnyRef

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( ... )
final def eq(arg0: AnyRef): Boolean

Definition Classes
AnyRef
def finalize(): Unit

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( classOf[java.lang.Throwable] )
val finalizer: slamdata.Predef.Option[Expr]

JavaScript function applied to the output after the reduce function.
final def getClass(): Class[_]

Definition Classes
AnyRef → Any
def inlineBson: Doc
val inputSort: slamdata.Predef.Option[NonEmptyList[(BsonField, SortDir)]]

Criteria to use to sort the input documents.
final def isInstanceOf[T0]: Boolean

Definition Classes
Any
val jsMode: slamdata.Predef.Option[slamdata.Predef.Boolean]

Whether to avoid converting intermediate values to BSON, leaving them as JavaScript objects instead.
Whether to avoid converting intermediate values to BSON, leaving them as JavaScript objects instead. Setting this to true has implications on the size of the input, see the MongoDB mapReduce documentation for details.
val limit: slamdata.Predef.Option[slamdata.Predef.Long]

Limit the number of input documents to map
val map: Expr

The mapping function
final def ne(arg0: AnyRef): Boolean

Definition Classes
AnyRef
final def notify(): Unit

Definition Classes
AnyRef
final def notifyAll(): Unit

Definition Classes
AnyRef
val reduce: Expr

The reducing function
val scope: Scope

Global variables made available to the map, reduce and finalizer functions.
val selection: slamdata.Predef.Option[Selector]

Query selector to apply to input documents
final def synchronized[T0](arg0: ⇒ T0): T0

Definition Classes
AnyRef
def toCollBson(dst: OutputCollection): Doc
val verbose: slamdata.Predef.Option[slamdata.Predef.Boolean]

Whether to include additional information, such as timing, in the results.
final def wait(): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long, arg1: Int): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )

Related Docs: object MapReduce | package mongodb

Instance Constructors

Value Members

final def !=(arg0: Any): Boolean

final def ##(): Int

final def ==(arg0: Any): Boolean

final def asInstanceOf[T0]: T0

def clone(): AnyRef

final def eq(arg0: AnyRef): Boolean

def finalize(): Unit

val finalizer: slamdata.Predef.Option[Expr]

final def getClass(): Class[_]

def inlineBson: Doc

val inputSort: slamdata.Predef.Option[NonEmptyList[(BsonField, SortDir)]]

final def isInstanceOf[T0]: Boolean

val jsMode: slamdata.Predef.Option[slamdata.Predef.Boolean]

val limit: slamdata.Predef.Option[slamdata.Predef.Long]

val map: Expr

final def ne(arg0: AnyRef): Boolean

final def notify(): Unit

final def notifyAll(): Unit

val reduce: Expr

val scope: Scope

val selection: slamdata.Predef.Option[Selector]

final def synchronized[T0](arg0: ⇒ T0): T0

def toCollBson(dst: OutputCollection): Doc

val verbose: slamdata.Predef.Option[slamdata.Predef.Boolean]

final def wait(): Unit

final def wait(arg0: Long, arg1: Int): Unit

final def wait(arg0: Long): Unit

Inherited from Serializable

Inherited from Serializable

Inherited from Product

Inherited from Equals

Inherited from AnyRef

Inherited from Any

Ungrouped