org.apache.flink.streaming.api.operators

Class AbstractInput<IN,OUT>

java.lang.Object

org.apache.flink.streaming.api.operators.AbstractInput<IN,OUT>

All Implemented Interfaces:

Input<IN>

@Experimental
public abstract class AbstractInput<IN,OUT>
extends Object
implements Input<IN>

Base abstract implementation of Input interface intended to be used when extending AbstractStreamOperatorV2.

Field Summary

Fields

Modifier and Type	Field and Description
protected int	inputId
protected Output<StreamRecord<OUT>>	output
protected AbstractStreamOperatorV2<OUT>	owner
protected org.apache.flink.api.java.functions.KeySelector<?,?>	stateKeySelector KeySelector for extracting a key from an element being processed.

Constructor Summary

Constructors

Constructor and Description
AbstractInput(AbstractStreamOperatorV2<OUT> owner, int inputId)

Method Summary

Modifier and Type	Method and Description
void	processLatencyMarker(LatencyMarker latencyMarker) Processes a LatencyMarker that arrived on the first input of this two-input operator.
void	processWatermark(Watermark mark) Processes a Watermark that arrived on the first input of this two-input operator.
void	setKeyContextElement(StreamRecord record)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.flink.streaming.api.operators.Input

processElement

Field Detail

stateKeySelector

@Nullable
protected final org.apache.flink.api.java.functions.KeySelector<?,?> stateKeySelector

KeySelector for extracting a key from an element being processed. This is used to scope keyed state to a key. This is null if the operator is not a keyed operator.

This is for elements from the first input.

owner

protected final AbstractStreamOperatorV2<OUT> owner

inputId

protected final int inputId

output

protected final Output<StreamRecord<OUT>> output

Constructor Detail

AbstractInput

public AbstractInput(AbstractStreamOperatorV2<OUT> owner,
                     int inputId)

Method Detail

processWatermark

public void processWatermark(Watermark mark)
                      throws Exception

Description copied from interface: Input

Processes a Watermark that arrived on the first input of this two-input operator. This method is guaranteed to not be called concurrently with other methods of the operator.

Specified by:

processWatermark in interface Input<IN>

Throws:

Exception

See Also:

Watermark

processLatencyMarker

public void processLatencyMarker(LatencyMarker latencyMarker)
                          throws Exception

Description copied from interface: Input

Processes a LatencyMarker that arrived on the first input of this two-input operator. This method is guaranteed to not be called concurrently with other methods of the operator.

Specified by:

processLatencyMarker in interface Input<IN>

Throws:

Exception

See Also:

LatencyMarker

setKeyContextElement

public void setKeyContextElement(StreamRecord record)
                          throws Exception

Specified by:

setKeyContextElement in interface Input<IN>

Throws:

Exception