akka.stream.impl.fusing

Class MapError<T>

java.lang.Object

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

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

akka.stream.impl.fusing.GraphStages.SimpleLinearGraphStage<T>

akka.stream.impl.fusing.MapError<T>

All Implemented Interfaces:

Graph<FlowShape<T,T>,NotUsed>, java.io.Serializable, scala.Equals, scala.Product

public final class MapError<T>
extends GraphStages.SimpleLinearGraphStage<T>
implements scala.Product, scala.Serializable

Maps error with the provided function if it is defined for an error or, otherwise, passes it on unchanged.

While similar to Recover this stage can be used to transform an error signal to a different one *without* logging it as an error in the process. So in that sense it is NOT exactly equivalent to recover(t => throw t2) since recover would log the t2 error.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
MapError(scala.PartialFunction<java.lang.Throwable,java.lang.Throwable> f)

Method Summary

Modifier and Type	Method and Description
static Graph<S,M>	addAttributes(Attributes attr)
static Graph<S,M>	async()
abstract static boolean	canEqual(java.lang.Object that)
GraphStageLogic	createLogic(Attributes attr)
static scala.Tuple2<GraphStageLogic,NotUsed>	createLogicAndMaterializedValue(Attributes inheritedAttributes)
abstract static boolean	equals(java.lang.Object that)
scala.PartialFunction<java.lang.Throwable,java.lang.Throwable>	f()
static Inlet<T>	in()
protected static Attributes	initialAttributes()
static StreamLayout.Module	module()
static Graph<S,M>	named(java.lang.String name)
static Outlet<T>	out()
abstract static int	productArity()
abstract static java.lang.Object	productElement(int n)
static scala.collection.Iterator<java.lang.Object>	productIterator()
static java.lang.String	productPrefix()
static FlowShape<T,T>	shape()
static Graph<S,M>	withAttributes(Attributes attr)

Methods inherited from class akka.stream.impl.fusing.GraphStages.SimpleLinearGraphStage

in, out, shape

Methods inherited from class akka.stream.stage.GraphStage

createLogicAndMaterializedValue

Methods inherited from class akka.stream.stage.GraphStageWithMaterializedValue

initialAttributes, module, withAttributes

Methods inherited from class java.lang.Object

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

Methods inherited from interface scala.Product

$init$, productArity, productElement, productIterator, productPrefix

Methods inherited from interface scala.Equals

canEqual, equals

Methods inherited from interface akka.stream.Graph

addAttributes, async, named

Constructor Detail

MapError

public MapError(scala.PartialFunction<java.lang.Throwable,java.lang.Throwable> f)

Method Detail

named

public static Graph<S,M> named(java.lang.String name)

async

public static Graph<S,M> async()

addAttributes

public static Graph<S,M> addAttributes(Attributes attr)

initialAttributes

protected static Attributes initialAttributes()

module

public static final StreamLayout.Module module()

withAttributes

public static final Graph<S,M> withAttributes(Attributes attr)

createLogicAndMaterializedValue

public static final scala.Tuple2<GraphStageLogic,NotUsed> createLogicAndMaterializedValue(Attributes inheritedAttributes)

in

public static Inlet<T> in()

out

public static Outlet<T> out()

shape

public static FlowShape<T,T> shape()

canEqual

public abstract static boolean canEqual(java.lang.Object that)

equals

public abstract static boolean equals(java.lang.Object that)

productElement

public abstract static java.lang.Object productElement(int n)

productArity

public abstract static int productArity()

productIterator

public static scala.collection.Iterator<java.lang.Object> productIterator()

productPrefix

public static java.lang.String productPrefix()

f

public scala.PartialFunction<java.lang.Throwable,java.lang.Throwable> f()

createLogic

public GraphStageLogic createLogic(Attributes attr)

Specified by:

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