org.apache.flink.state.api.input.operator.window

Interface WindowContents<S extends State,IN>

Type Parameters:

S - The initial state type.

IN - The data in state.

All Superinterfaces:

Serializable

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface WindowContents<S extends State,IN>
extends Serializable

An abstraction for transforming any State type into an iterable over its contents.

Method Summary

Modifier and Type	Method and Description
static <IN,OUT> WindowContents<AggregatingState<IN,OUT>,OUT>	aggregatingState()
Iterable<IN>	contents(S state)
static <T> WindowContents<ListState<T>,T>	listState()
static <T> WindowContents<ReducingState<T>,T>	reducingState()

Method Detail

reducingState

static <T> WindowContents<ReducingState<T>,T> reducingState()

aggregatingState

static <IN,OUT> WindowContents<AggregatingState<IN,OUT>,OUT> aggregatingState()

listState

static <T> WindowContents<ListState<T>,T> listState()

contents

Iterable<IN> contents(S state)
               throws Exception

Throws:

Exception