akka.stream.impl

Class Unfold<S,E>

java.lang.Object

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

akka.stream.stage.GraphStage<SourceShape<E>>

akka.stream.impl.Unfold<S,E>

All Implemented Interfaces:

Graph<SourceShape<E>,NotUsed>

public final class Unfold<S,E>
extends GraphStage<SourceShape<E>>

INTERNAL API

Constructor Summary

Constructors

Constructor and Description
Unfold(S s, scala.Function1<S,scala.Option<scala.Tuple2<S,E>>> f)

Method Summary

Modifier and Type	Method and Description
GraphStageLogic	createLogic(Attributes inheritedAttributes)
Attributes	initialAttributes()
Outlet<E>	out()
SourceShape<E>	shape() The shape of a graph is all that is externally visible: its inlets and outlets.

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, toString, wait, wait, wait

Methods inherited from interface akka.stream.Graph

addAttributes, async, named

Constructor Detail

Unfold

public Unfold(S s,
              scala.Function1<S,scala.Option<scala.Tuple2<S,E>>> f)

Method Detail

out

public Outlet<E> out()

shape

public SourceShape<E> 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<SourceShape<E>,NotUsed>

createLogic

public GraphStageLogic createLogic(Attributes inheritedAttributes)

Specified by:

createLogic in class GraphStage<SourceShape<E>>