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

接口 WindowContents<S extends org.apache.flink.api.common.state.State,IN>

类型参数:

S - The initial state type.

IN - The data in state.

所有超级接口:

Serializable

函数接口:

这是一个函数接口, 因此可用作 lambda 表达式或方法引用的赋值目标。

@FunctionalInterface
public interface WindowContents<S extends org.apache.flink.api.common.state.State,IN>
extends Serializable

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

方法概要

限定符和类型	方法和说明
static <IN,OUT> WindowContents<org.apache.flink.api.common.state.AggregatingState<IN,OUT>,OUT>	aggregatingState()
Iterable<IN>	contents(S state)
static <T> WindowContents<org.apache.flink.api.common.state.ListState<T>,T>	listState()
static <T> WindowContents<org.apache.flink.api.common.state.ReducingState<T>,T>	reducingState()

方法详细资料

reducingState

static <T> WindowContents<org.apache.flink.api.common.state.ReducingState<T>,T> reducingState()

aggregatingState

static <IN,OUT> WindowContents<org.apache.flink.api.common.state.AggregatingState<IN,OUT>,OUT> aggregatingState()

listState

static <T> WindowContents<org.apache.flink.api.common.state.ListState<T>,T> listState()

contents

Iterable<IN> contents(S state)
               throws Exception

抛出:

Exception