org.apache.flink.streaming.api.operators

Class TimestampedCollector<T>

java.lang.Object

org.apache.flink.streaming.api.operators.TimestampedCollector<T>

Type Parameters:

T - The type of the elements that can be emitted.

All Implemented Interfaces:

Output<T>, org.apache.flink.util.Collector<T>

@Internal
public final class TimestampedCollector<T>
extends Object
implements Output<T>

Wrapper around an Output for user functions that expect a Output. Before giving the TimestampedCollector to a user function you must set the timestamp that should be attached to emitted elements. Most operators would set the timestamp of the incoming StreamRecord here.

Constructor Summary

Constructors

Constructor and Description
TimestampedCollector(Output<StreamRecord<T>> output) Creates a new TimestampedCollector that wraps the given Output.

Method Summary

Modifier and Type	Method and Description
void	close()
<X> void	collect(org.apache.flink.util.OutputTag<X> outputTag, StreamRecord<X> record) Emits a record the side output identified by the given OutputTag.
void	collect(T record)
void	emitLatencyMarker(LatencyMarker latencyMarker)
void	emitWatermark(Watermark mark) Emits a Watermark from an operator.
void	eraseTimestamp()
void	setAbsoluteTimestamp(long timestamp)
void	setTimestamp(StreamRecord<?> timestampBase)

Methods inherited from class java.lang.Object

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

Constructor Detail

TimestampedCollector

public TimestampedCollector(Output<StreamRecord<T>> output)

Creates a new TimestampedCollector that wraps the given Output.

Method Detail

collect

public void collect(T record)

Specified by:

collect in interface org.apache.flink.util.Collector<T>

setTimestamp

public void setTimestamp(StreamRecord<?> timestampBase)

setAbsoluteTimestamp

public void setAbsoluteTimestamp(long timestamp)

eraseTimestamp

public void eraseTimestamp()

close

public void close()

Specified by:

close in interface org.apache.flink.util.Collector<T>

emitWatermark

public void emitWatermark(Watermark mark)

Description copied from interface: Output

Emits a Watermark from an operator. This watermark is broadcast to all downstream operators.

A watermark specifies that no element with a timestamp lower or equal to the watermark timestamp will be emitted in the future.

Specified by:

emitWatermark in interface Output<T>

collect

public <X> void collect(org.apache.flink.util.OutputTag<X> outputTag,
                        StreamRecord<X> record)

Description copied from interface: Output

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

Specified by:

collect in interface Output<T>

record - The record to collect.

emitLatencyMarker

public void emitLatencyMarker(LatencyMarker latencyMarker)

Specified by:

emitLatencyMarker in interface Output<T>