org.apache.flink.streaming.api.functions

类 KeyedProcessFunction.Context

java.lang.Object

org.apache.flink.streaming.api.functions.KeyedProcessFunction.Context

直接已知子类:

KeyedProcessFunction.OnTimerContext

封闭类:

KeyedProcessFunction<K,I,O>

public abstract class KeyedProcessFunction.Context
extends Object

Information available in an invocation of KeyedProcessFunction.processElement(Object, Context, Collector) or KeyedProcessFunction.onTimer(long, OnTimerContext, Collector).

构造器概要

构造器

构造器和说明
Context()

方法概要

限定符和类型	方法和说明
abstract K	getCurrentKey() Get key of the element being processed.
abstract <X> void	output(org.apache.flink.util.OutputTag<X> outputTag, X value) Emits a record to the side output identified by the OutputTag.
abstract TimerService	timerService() A TimerService for querying time and registering timers.
abstract Long	timestamp() Timestamp of the element currently being processed or timestamp of a firing timer.

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

Context

public Context()

方法详细资料

timestamp

public abstract Long timestamp()

Timestamp of the element currently being processed or timestamp of a firing timer.

This might be null, for example if the time characteristic of your program is set to TimeCharacteristic.ProcessingTime.

timerService

public abstract TimerService timerService()

A TimerService for querying time and registering timers.

output

public abstract <X> void output(org.apache.flink.util.OutputTag<X> outputTag,
                                X value)

Emits a record to the side output identified by the OutputTag.

参数:

outputTag - the OutputTag that identifies the side output to emit to.

value - The record to emit.

getCurrentKey

public abstract K getCurrentKey()

Get key of the element being processed.