flink-scala-api
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flink-scala-api/org.apache.flink.api.function/StatefulFunction

StatefulFunction

org.apache.flink.api.function.StatefulFunction
@Public
trait StatefulFunction[I, O, S] extends RichFunction

Trait implementing the functionality necessary to apply stateful functions in RichFunctions without exposing the OperatorStates to the user. The user should call the applyWithState method in his own RichFunction implementation.

Attributes

Graph
Supertypes
trait RichFunction
trait Function
trait Serializable
class Object
trait Matchable
class Any

Members list

Concise view

Value members

Concrete methods

def applyWithState(in: I, fun: (I, Option[S]) => (O, Option[S])): O
override def open(c: Configuration): Unit

Attributes

Definition Classes
RichFunction

Inherited methods

def close(): Unit

Attributes

Inherited from:
RichFunction
def getIterationRuntimeContext(): IterationRuntimeContext

Attributes

Inherited from:
RichFunction
def getRuntimeContext(): RuntimeContext

Attributes

Inherited from:
RichFunction
def setRuntimeContext(x$0: RuntimeContext): Unit

Attributes

Inherited from:
RichFunction

Abstract fields

protected val stateSerializer: TypeSerializer[S]
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