org.apache.flink.table.runtime.operators.wmassigners

Class PeriodicWatermarkAssignerWrapper

java.lang.Object

org.apache.flink.table.runtime.operators.wmassigners.PeriodicWatermarkAssignerWrapper

All Implemented Interfaces:

Serializable, org.apache.flink.api.common.eventtime.TimestampAssigner<org.apache.flink.table.data.RowData>, org.apache.flink.api.common.functions.Function, org.apache.flink.streaming.api.functions.AssignerWithPeriodicWatermarks<org.apache.flink.table.data.RowData>

@Internal
public class PeriodicWatermarkAssignerWrapper
extends Object
implements org.apache.flink.streaming.api.functions.AssignerWithPeriodicWatermarks<org.apache.flink.table.data.RowData>

Generates periodic watermarks based on a PeriodicWatermarkAssigner.

See Also:

Serialized Form

Field Summary

Fields inherited from interface org.apache.flink.api.common.eventtime.TimestampAssigner

NO_TIMESTAMP

Constructor Summary

Constructors

Constructor and Description
PeriodicWatermarkAssignerWrapper(org.apache.flink.table.sources.wmstrategies.PeriodicWatermarkAssigner assigner, int timeFieldIdx)

Method Summary

Modifier and Type	Method and Description
long	extractTimestamp(org.apache.flink.table.data.RowData row, long recordTimestamp)
org.apache.flink.streaming.api.watermark.Watermark	getCurrentWatermark()

Methods inherited from class java.lang.Object

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

Constructor Detail

PeriodicWatermarkAssignerWrapper

public PeriodicWatermarkAssignerWrapper(org.apache.flink.table.sources.wmstrategies.PeriodicWatermarkAssigner assigner,
                                        int timeFieldIdx)

Parameters:

timeFieldIdx - the index of the rowtime attribute.

assigner - the watermark assigner.

Method Detail

getCurrentWatermark

@Nullable
public org.apache.flink.streaming.api.watermark.Watermark getCurrentWatermark()

Specified by:

getCurrentWatermark in interface org.apache.flink.streaming.api.functions.AssignerWithPeriodicWatermarks<org.apache.flink.table.data.RowData>

extractTimestamp

public long extractTimestamp(org.apache.flink.table.data.RowData row,
                             long recordTimestamp)

Specified by:

extractTimestamp in interface org.apache.flink.api.common.eventtime.TimestampAssigner<org.apache.flink.table.data.RowData>