Package org.apache.pekko.stream.scaladsl

Class Merge<T>

java.lang.Object

org.apache.pekko.stream.stage.GraphStageWithMaterializedValue<S,NotUsed>

org.apache.pekko.stream.stage.GraphStage<UniformFanInShape<T,T>>

org.apache.pekko.stream.scaladsl.Merge<T>

All Implemented Interfaces:

Graph<UniformFanInShape<T,T>,NotUsed>, TypePreservingFanIn

public final class Merge<T>
extends GraphStage<UniformFanInShape<T,T>>
implements TypePreservingFanIn

Merge several streams, taking elements as they arrive from input streams (picking randomly when several have elements ready).

'''Emits when''' one of the inputs has an element available

'''Backpressures when''' downstream backpressures

'''Completes when''' all upstreams complete (eagerComplete=false) or one upstream completes (eagerComplete=true), default value is false

'''Cancels when''' downstream cancels

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.pekko.stream.Graph

Graph.GraphMapMatVal<S extends Shape,M>

Constructor Summary

Constructors

Constructor	Description
Merge(int inputPorts, boolean eagerComplete)

Method Summary

Modifier and Type	Method	Description
static <T> Merge<T>	apply(int inputPorts, boolean eagerComplete)	Create a new Merge with the specified number of input ports.
static <T> boolean	apply$default$2()
GraphStageLogic	createLogic(Attributes inheritedAttributes)
boolean	eagerComplete()
scala.collection.immutable.IndexedSeq<Inlet<T>>	in()
Attributes	initialAttributes()
int	inputPorts()
Outlet<T>	out()
UniformFanInShape<T,T>	shape()	The shape of a graph is all that is externally visible: its inlets and outlets.
String	toString()

Methods inherited from class org.apache.pekko.stream.stage.GraphStage

createLogicAndMaterializedValue

Methods inherited from class org.apache.pekko.stream.stage.GraphStageWithMaterializedValue

withAttributes

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.pekko.stream.Graph

addAttributes, async, async, async, getAttributes, named

Constructor Details

Merge

public Merge(int inputPorts,
 boolean eagerComplete)

Method Details

apply

public static <T> Merge<T> apply(int inputPorts,
 boolean eagerComplete)

Create a new Merge with the specified number of input ports.

Parameters:

inputPorts - number of input ports

eagerComplete - if true, the merge will complete as soon as one of its inputs completes.

apply$default$2

public static <T> boolean apply$default$2()

inputPorts

public int inputPorts()

eagerComplete

public boolean eagerComplete()

in

public scala.collection.immutable.IndexedSeq<Inlet<T>> in()

out

public Outlet<T> out()

initialAttributes

public Attributes initialAttributes()

Overrides:

initialAttributes in class GraphStageWithMaterializedValue<UniformFanInShape<T,T>,NotUsed>

shape

public UniformFanInShape<T,T> shape()

Description copied from interface: Graph

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

Specified by:

shape in interface Graph<UniformFanInShape<T,T>,NotUsed>

createLogic

public GraphStageLogic createLogic(Attributes inheritedAttributes)

Specified by:

createLogic in class GraphStage<UniformFanInShape<T,T>>

toString

public String toString()

Overrides:

toString in class Object