Package org.apache.flink.streaming.api.functions

Class KeyedProcessFunction.Context

java.lang.Object

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

Direct Known Subclasses:

KeyedProcessFunction.OnTimerContext

Enclosing class:

KeyedProcessFunction<K,I,O>

public abstract class KeyedProcessFunction.Context
extends Object

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

Constructor Summary

Constructors

Constructor	Description
Context()

Method Summary

Modifier and Type	Method	Description
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.

Methods inherited from class java.lang.Object

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

Constructor Details

Context

public Context()

Method Details

timestamp

public abstract Long timestamp()

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

This might be null, depending on the stream's watermark strategy.

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.

Parameters:

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.