org.apache.flink.table.runtime.operators.deduplicate.window.combines

Class RowTimeDeduplicateRecordsCombiner

java.lang.Object

org.apache.flink.table.runtime.operators.deduplicate.window.combines.RowTimeDeduplicateRecordsCombiner

All Implemented Interfaces:

RecordsCombiner

public final class RowTimeDeduplicateRecordsCombiner
extends Object
implements RecordsCombiner

An implementation of RecordsCombiner that stores the first/last records of incremental input records into the window state.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	RowTimeDeduplicateRecordsCombiner.Factory Factory to create RowTimeDeduplicateRecordsCombiner.

Nested classes/interfaces inherited from interface org.apache.flink.table.runtime.operators.window.tvf.combines.RecordsCombiner

RecordsCombiner.LocalFactory

Constructor Summary

Constructors

Constructor and Description
RowTimeDeduplicateRecordsCombiner(WindowTimerService<Long> timerService, StateKeyContext keyContext, WindowValueState<Long> dataState, int rowtimeIndex, boolean keepLastRow, org.apache.flink.api.common.typeutils.TypeSerializer<org.apache.flink.table.data.RowData> recordSerializer)

Method Summary

Modifier and Type	Method and Description
void	close() Release resources allocated by this combine function.
void	combine(WindowKey windowKey, Iterator<org.apache.flink.table.data.RowData> records) Combines the buffered data into state based on the given window-key pair.

Methods inherited from class java.lang.Object

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

Constructor Detail

RowTimeDeduplicateRecordsCombiner

public RowTimeDeduplicateRecordsCombiner(WindowTimerService<Long> timerService,
                                         StateKeyContext keyContext,
                                         WindowValueState<Long> dataState,
                                         int rowtimeIndex,
                                         boolean keepLastRow,
                                         org.apache.flink.api.common.typeutils.TypeSerializer<org.apache.flink.table.data.RowData> recordSerializer)

Method Detail

combine

public void combine(WindowKey windowKey,
                    Iterator<org.apache.flink.table.data.RowData> records)
             throws Exception

Description copied from interface: RecordsCombiner

Combines the buffered data into state based on the given window-key pair.

Specified by:

combine in interface RecordsCombiner

Parameters:

windowKey - the window-key pair that the buffered data belong to, the window-key object is reused.

records - the buffered data, the iterator and RowData objects are reused.

Throws:

Exception

close

public void close()
           throws Exception

Description copied from interface: RecordsCombiner

Release resources allocated by this combine function.

Specified by:

close in interface RecordsCombiner

Throws:

Exception