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 0 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
A Broadcast has one in port and 2 or more out ports.
- Source
- Graph.scala
Linear Supertypes
Type Hierarchy
Ordering
- Alphabetic
- By Inheritance
Inherited
- MergePreferred
- GraphStage
- GraphStageWithMaterializedValue
- Graph
- AnyRef
- Any
Implicitly
- by any2stringadd
- by StringFormat
- by Ensuring
- by ArrowAssoc
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Visibility
- Public
- All
Type Members
-
type
Shape = MergePreferredShape[T]
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
-
final
def
!=(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
-
final
def
##(): Int
- Definition Classes
- AnyRef → Any
-
def
+(other: String): String
- Implicit
- 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
-
def
->[B](y: B): (MergePreferred[T], B)
- Implicit
- 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()
-
final
def
==(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
-
def
addAttributes(attr: Attributes): Graph[MergePreferredShape[T], NotUsed]
- Definition Classes
- Graph
-
final
def
asInstanceOf[T0]: T0
- Definition Classes
- Any
-
def
async: Graph[MergePreferredShape[T], NotUsed]
Put an asynchronous boundary around this
GraphPut an asynchronous boundary around this
Graph- Definition Classes
- Graph
-
def
clone(): AnyRef
- Attributes
- protected[java.lang]
- Definition Classes
- AnyRef
- Annotations
- @throws( ... )
-
def
createLogic(inheritedAttributes: Attributes): GraphStageLogic
- Definition Classes
- MergePreferred → GraphStage
-
final
def
createLogicAndMaterializedValue(inheritedAttributes: Attributes): (GraphStageLogic, NotUsed)
- Definition Classes
- GraphStage → GraphStageWithMaterializedValue
- val eagerComplete: Boolean
-
def
ensuring(cond: (MergePreferred[T]) ⇒ Boolean, msg: ⇒ Any): MergePreferred[T]
- Implicit
- 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
-
def
ensuring(cond: (MergePreferred[T]) ⇒ Boolean): MergePreferred[T]
- Implicit
- 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
-
def
ensuring(cond: Boolean, msg: ⇒ Any): MergePreferred[T]
- Implicit
- 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
-
def
ensuring(cond: Boolean): MergePreferred[T]
- Implicit
- 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
-
final
def
eq(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef
-
def
equals(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
-
def
finalize(): Unit
- Attributes
- protected[java.lang]
- Definition Classes
- AnyRef
- Annotations
- @throws( classOf[java.lang.Throwable] )
-
def
formatted(fmtstr: String): String
- Implicit
- 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()
-
final
def
getClass(): Class[_]
- Definition Classes
- AnyRef → Any
-
def
hashCode(): Int
- Definition Classes
- AnyRef → Any
- def in(id: Int): Inlet[T]
-
def
initialAttributes: Attributes
- Definition Classes
- MergePreferred → GraphStageWithMaterializedValue
-
final
def
isInstanceOf[T0]: Boolean
- Definition Classes
- Any
-
final
lazy val
module: Module
INTERNAL API.
INTERNAL API.
Every materializable element must be backed by a stream layout module
- Definition Classes
- GraphStageWithMaterializedValue → Graph
-
def
named(name: String): Graph[MergePreferredShape[T], NotUsed]
- Definition Classes
- Graph
-
final
def
ne(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef
-
final
def
notify(): Unit
- Definition Classes
- AnyRef
-
final
def
notifyAll(): Unit
- Definition Classes
- AnyRef
- def out: Outlet[T]
- def preferred: Inlet[T]
- val secondaryPorts: Int
-
val
shape: MergePreferredShape[T]
- Definition Classes
- MergePreferred → Graph
-
final
def
synchronized[T0](arg0: ⇒ T0): T0
- Definition Classes
- AnyRef
-
def
toString(): String
- Definition Classes
- AnyRef → Any
-
final
def
wait(): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws( ... )
-
final
def
wait(arg0: Long, arg1: Int): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws( ... )
-
final
def
wait(arg0: Long): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws( ... )
-
final
def
withAttributes(attr: Attributes): Graph[MergePreferredShape[T], NotUsed]
- Definition Classes
- GraphStageWithMaterializedValue → Graph
-
def
→[B](y: B): (MergePreferred[T], B)
- Implicit
- 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