c

akka.stream.stage

AbstractGraphStageWithMaterializedValue

abstract class AbstractGraphStageWithMaterializedValue[+S <: Shape, M] extends GraphStageWithMaterializedValue[S, M]

Java API: A GraphStage represents a reusable graph stream processing operator.

Extend this AbstractGraphStageWithMaterializedValue if you want to provide a materialized value, represented by the type parameter M. If your GraphStage does not need to provide a materialized value you can instead extende GraphStage which materializes a NotUsed value.

A GraphStage consists of a Shape which describes its input and output ports and a factory function that creates a GraphStageLogic which implements the processing logic that ties the ports together.

See also GraphStageWithMaterializedValue for Scala DSL for this operator.

Source
GraphStage.scala
Linear Supertypes
Ordering
  1. Alphabetic
  2. By Inheritance
Inherited
  1. AbstractGraphStageWithMaterializedValue
  2. GraphStageWithMaterializedValue
  3. Graph
  4. AnyRef
  5. Any
Implicitly
  1. by any2stringadd
  2. by StringFormat
  3. by Ensuring
  4. by ArrowAssoc
  1. Hide All
  2. Show All
Visibility
  1. Public
  2. All

Instance Constructors

  1. new AbstractGraphStageWithMaterializedValue()

Type Members

  1. type Shape = S

    Type-level accessor for the shape parameter of this graph.

    Type-level accessor for the shape parameter of this graph.

    Definition Classes
    Graph

Abstract Value Members

  1. abstract def createLogicAndMaterializedValuePair(inheritedAttributes: Attributes): Pair[GraphStageLogic, M]
    Annotations
    @throws( classOf[Exception] )
  2. abstract def shape: S

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

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

    Definition Classes
    Graph

Concrete Value Members

  1. def addAttributes(attr: Attributes): Graph[S, M]

    Add the given attributes to this Graph.

    Add the given attributes to this Graph. If the specific attribute was already present on this graph this means the added attribute will be more specific than the existing one. If this Source is a composite of multiple graphs, new attributes on the composite will be less specific than attributes set directly on the individual graphs of the composite.

    Definition Classes
    Graph
  2. def async(dispatcher: String, inputBufferSize: Int): Graph[S, M]

    Put an asynchronous boundary around this Graph

    Put an asynchronous boundary around this Graph

    dispatcher

    Run the graph on this dispatcher

    inputBufferSize

    Set the input buffer to this size for the graph

    Definition Classes
    Graph
  3. def async(dispatcher: String): Graph[S, M]

    Put an asynchronous boundary around this Graph

    Put an asynchronous boundary around this Graph

    dispatcher

    Run the graph on this dispatcher

    Definition Classes
    Graph
  4. def async: Graph[S, M]

    Put an asynchronous boundary around this Graph

    Put an asynchronous boundary around this Graph

    Definition Classes
    Graph
  5. final def createLogicAndMaterializedValue(inheritedAttributes: Attributes): (GraphStageLogic, M)
    Definition Classes
    AbstractGraphStageWithMaterializedValueGraphStageWithMaterializedValue
    Annotations
    @throws( classOf[Exception] )
  6. def named(name: String): Graph[S, M]
    Definition Classes
    Graph
  7. final def withAttributes(attr: Attributes): Graph[S, M]
    Definition Classes
    GraphStageWithMaterializedValueGraph