org.apache.flink.streaming.api.functions.co

类 BaseBroadcastProcessFunction.Context

java.lang.Object

org.apache.flink.streaming.api.functions.co.BaseBroadcastProcessFunction.Context

直接已知子类:

BroadcastProcessFunction.Context, KeyedBroadcastProcessFunction.Context

封闭类:

BaseBroadcastProcessFunction

public abstract class BaseBroadcastProcessFunction.Context
extends Object

A base context available to the broadcasted stream side of a BroadcastConnectedStream.

Apart from the basic functionality of a context, this also allows to get and update the elements stored in the broadcast state. In other words, it gives read/write access to the broadcast state.

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 long	currentProcessingTime() Returns the current processing time.
abstract long	currentWatermark() Returns the current event-time watermark.
abstract <K,V> org.apache.flink.api.common.state.BroadcastState<K,V>	getBroadcastState(org.apache.flink.api.common.state.MapStateDescriptor<K,V> stateDescriptor) Fetches the BroadcastState with the specified name.
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 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

getBroadcastState

public abstract <K,V> org.apache.flink.api.common.state.BroadcastState<K,V> getBroadcastState(org.apache.flink.api.common.state.MapStateDescriptor<K,V> stateDescriptor)

Fetches the BroadcastState with the specified name.

参数:

stateDescriptor - the MapStateDescriptor of the state to be fetched.

返回:

The required broadcast state.

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.

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.

currentProcessingTime

public abstract long currentProcessingTime()

Returns the current processing time.

currentWatermark

public abstract long currentWatermark()

Returns the current event-time watermark.