akka.stream.impl.fusing

Class GroupBy<T,K>

java.lang.Object

akka.stream.stage.GraphStageWithMaterializedValue<S,NotUsed>

akka.stream.stage.GraphStage<FlowShape<T,Source<T,NotUsed>>>

akka.stream.impl.fusing.GroupBy<T,K>

All Implemented Interfaces:

Graph<FlowShape<T,Source<T,NotUsed>>,NotUsed>

public final class GroupBy<T,K>
extends GraphStage<FlowShape<T,Source<T,NotUsed>>>

INTERNAL API

Constructor Summary

Constructors

Constructor and Description
GroupBy(int maxSubstreams, scala.Function1<T,K> keyFor)

Method Summary

Modifier and Type	Method and Description
GraphStageLogic	createLogic(Attributes inheritedAttributes)
Inlet<T>	in()
Attributes	initialAttributes()
scala.Function1<T,K>	keyFor()
int	maxSubstreams()
Outlet<Source<T,NotUsed>>	out()
FlowShape<T,Source<T,NotUsed>>	shape() The shape of a graph is all that is externally visible: its inlets and outlets.
java.lang.String	toString()

Methods inherited from class akka.stream.stage.GraphStage

createLogicAndMaterializedValue

Methods inherited from class akka.stream.stage.GraphStageWithMaterializedValue

module, withAttributes

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface akka.stream.Graph

addAttributes, async, named

Constructor Detail

GroupBy

public GroupBy(int maxSubstreams,
               scala.Function1<T,K> keyFor)

Method Detail

maxSubstreams

public int maxSubstreams()

keyFor

public scala.Function1<T,K> keyFor()

in

public Inlet<T> in()

out

public Outlet<Source<T,NotUsed>> out()

shape

public FlowShape<T,Source<T,NotUsed>> shape()

Description copied from interface: Graph

The shape of a graph is all that is externally visible: its inlets and outlets.

Returns:

(undocumented)

initialAttributes

public Attributes initialAttributes()

Overrides:

initialAttributes in class GraphStageWithMaterializedValue<FlowShape<T,Source<T,NotUsed>>,NotUsed>

createLogic

public GraphStageLogic createLogic(Attributes inheritedAttributes)

Specified by:

createLogic in class GraphStage<FlowShape<T,Source<T,NotUsed>>>

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object