Class/Object

akka.stream.scaladsl

MergePreferred

Related Docs: object MergePreferred | package scaladsl

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final class MergePreferred[T] extends GraphStage[MergePreferredShape[T]]

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

A MergePreferred has one out port, one preferred input port and 1 or more secondary in ports.

Emits when one of the inputs has an element available, preferring a specified input if multiple have elements 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

Source
Graph.scala
Linear Supertypes
GraphStage[MergePreferredShape[T]], GraphStageWithMaterializedValue[MergePreferredShape[T], NotUsed], Graph[MergePreferredShape[T], NotUsed], AnyRef, Any
Type Hierarchy
Ordering
  1. Alphabetic
  2. By Inheritance
Inherited
  1. MergePreferred
  2. GraphStage
  3. GraphStageWithMaterializedValue
  4. Graph
  5. AnyRef
  6. Any
Implicitly
  1. by any2stringadd
  2. by StringFormat
  3. by Ensuring
  4. by ArrowAssoc
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Visibility
  1. Public
  2. All

Instance Constructors

  1. new MergePreferred(secondaryPorts: Int, eagerComplete: Boolean)

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Type Members

  1. type Shape = MergePreferredShape[T]

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

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

    Definition Classes
    Graph

Value Members

  1. final def !=(arg0: Any): Boolean

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    Definition Classes
    AnyRef → Any

  2. final def ##(): Int

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    Definition Classes
    AnyRef → Any

  3. def +(other: String): String

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    Implicit information
    This member is added by an implicit conversion from MergePreferred[T] to any2stringadd[MergePreferred[T]] performed by method any2stringadd in scala.Predef.
    Definition Classes
    any2stringadd

  4. def ->[B](y: B): (MergePreferred[T], B)

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    Implicit information
    This member is added by an implicit conversion from MergePreferred[T] to ArrowAssoc[MergePreferred[T]] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @inline()

  5. final def ==(arg0: Any): Boolean

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    Definition Classes
    AnyRef → Any

  6. def addAttributes(attr: Attributes): Graph[MergePreferredShape[T], NotUsed]

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    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

  7. final def asInstanceOf[T0]: T0

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    Definition Classes
    Any

  8. def async(dispatcher: String, inputBufferSize: Int): Graph[MergePreferredShape[T], NotUsed]

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    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

  9. def async(dispatcher: String): Graph[MergePreferredShape[T], NotUsed]

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    Put an asynchronous boundary around this Graph

    Put an asynchronous boundary around this Graph

    dispatcher

    Run the graph on this dispatcher

    Definition Classes
    Graph

  10. def async: Graph[MergePreferredShape[T], NotUsed]

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    Put an asynchronous boundary around this Graph

    Put an asynchronous boundary around this Graph

    Definition Classes
    Graph

  11. def clone(): AnyRef

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    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  12. def createLogic(inheritedAttributes: Attributes): GraphStageLogic

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    Definition Classes
    MergePreferred → GraphStage

  13. final def createLogicAndMaterializedValue(inheritedAttributes: Attributes): (GraphStageLogic, NotUsed)

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    Definition Classes
    GraphStage → GraphStageWithMaterializedValue

  14. val eagerComplete: Boolean

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  15. def ensuring(cond: (MergePreferred[T]) ⇒ Boolean, msg: ⇒ Any): MergePreferred[T]

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    Implicit information
    This member is added by an implicit conversion from MergePreferred[T] to Ensuring[MergePreferred[T]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring

  16. def ensuring(cond: (MergePreferred[T]) ⇒ Boolean): MergePreferred[T]

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    Implicit information
    This member is added by an implicit conversion from MergePreferred[T] to Ensuring[MergePreferred[T]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring

  17. def ensuring(cond: Boolean, msg: ⇒ Any): MergePreferred[T]

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    Implicit information
    This member is added by an implicit conversion from MergePreferred[T] to Ensuring[MergePreferred[T]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring

  18. def ensuring(cond: Boolean): MergePreferred[T]

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    Implicit information
    This member is added by an implicit conversion from MergePreferred[T] to Ensuring[MergePreferred[T]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring

  19. final def eq(arg0: AnyRef): Boolean

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    Definition Classes
    AnyRef

  20. def equals(arg0: Any): Boolean

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    Definition Classes
    AnyRef → Any

  21. def finalize(): Unit

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    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )

  22. def formatted(fmtstr: String): String

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    Implicit information
    This member is added by an implicit conversion from MergePreferred[T] to StringFormat[MergePreferred[T]] performed by method StringFormat in scala.Predef.
    Definition Classes
    StringFormat
    Annotations
    @inline()

  23. final def getClass(): Class[_]

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    Definition Classes
    AnyRef → Any

  24. def hashCode(): Int

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    Definition Classes
    AnyRef → Any

  25. def in(id: Int): Inlet[T]

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  26. def initialAttributes: Attributes

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    Definition Classes
    MergePreferred → GraphStageWithMaterializedValue

  27. final def isInstanceOf[T0]: Boolean

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    Definition Classes
    Any

  28. def named(name: String): Graph[MergePreferredShape[T], NotUsed]

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    Definition Classes
    Graph

  29. final def ne(arg0: AnyRef): Boolean

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    Definition Classes
    AnyRef

  30. final def notify(): Unit

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    Definition Classes
    AnyRef

  31. final def notifyAll(): Unit

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    Definition Classes
    AnyRef

  32. def out: Outlet[T]

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  33. def preferred: Inlet[T]

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  34. val secondaryPorts: Int

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  35. val shape: MergePreferredShape[T]

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    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
    MergePreferred → Graph

  36. final def synchronized[T0](arg0: ⇒ T0): T0

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    Definition Classes
    AnyRef

  37. def toString(): String

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    Definition Classes
    AnyRef → Any

  38. final def wait(): Unit

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  39. final def wait(arg0: Long, arg1: Int): Unit

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  40. final def wait(arg0: Long): Unit

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  41. final def withAttributes(attr: Attributes): Graph[MergePreferredShape[T], NotUsed]

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    Definition Classes
    GraphStageWithMaterializedValue → Graph

  42. def →[B](y: B): (MergePreferred[T], B)

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    Implicit information
    This member is added by an implicit conversion from MergePreferred[T] to ArrowAssoc[MergePreferred[T]] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc

Inherited from GraphStage[MergePreferredShape[T]]

Inherited from GraphStageWithMaterializedValue[MergePreferredShape[T], NotUsed]

Inherited from Graph[MergePreferredShape[T], NotUsed]

Inherited from AnyRef

Inherited from Any

Inherited by implicit conversion any2stringadd from MergePreferred[T] to any2stringadd[MergePreferred[T]]

Inherited by implicit conversion StringFormat from MergePreferred[T] to StringFormat[MergePreferred[T]]

Inherited by implicit conversion Ensuring from MergePreferred[T] to Ensuring[MergePreferred[T]]

Inherited by implicit conversion ArrowAssoc from MergePreferred[T] to ArrowAssoc[MergePreferred[T]]

Ungrouped