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

Class MiniBatchDeduplicateKeepLastRowFunction

java.lang.Object

org.apache.flink.table.runtime.operators.bundle.MapBundleFunction<BaseRow,BaseRow,BaseRow,BaseRow>

org.apache.flink.table.runtime.operators.deduplicate.MiniBatchDeduplicateKeepLastRowFunction

All Implemented Interfaces:

Serializable, Function

public class MiniBatchDeduplicateKeepLastRowFunction
extends MapBundleFunction<BaseRow,BaseRow,BaseRow,BaseRow>

This function is used to get the last row for every key partition in miniBatch mode.

See Also:

Serialized Form

Field Summary

Fields inherited from class org.apache.flink.table.runtime.operators.bundle.MapBundleFunction

ctx

Constructor Summary

Constructors

Constructor and Description
MiniBatchDeduplicateKeepLastRowFunction(BaseRowTypeInfo rowTypeInfo, boolean generateRetraction, TypeSerializer<BaseRow> typeSerializer)

Method Summary

Modifier and Type	Method and Description
BaseRow	addInput(BaseRow value, BaseRow input) Adds the given input to the given value, returning the new bundle value.
void	finishBundle(Map<BaseRow,BaseRow> buffer, Collector<BaseRow> out) Called when a bundle is finished.
void	open(ExecutionContext ctx)

Methods inherited from class org.apache.flink.table.runtime.operators.bundle.MapBundleFunction

close

Methods inherited from class java.lang.Object

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

Constructor Detail

MiniBatchDeduplicateKeepLastRowFunction

public MiniBatchDeduplicateKeepLastRowFunction(BaseRowTypeInfo rowTypeInfo,
                                               boolean generateRetraction,
                                               TypeSerializer<BaseRow> typeSerializer)

Method Detail

open

public void open(ExecutionContext ctx)
          throws Exception

Overrides:

open in class MapBundleFunction<BaseRow,BaseRow,BaseRow,BaseRow>

Throws:

Exception

addInput

public BaseRow addInput(@Nullable
                        BaseRow value,
                        BaseRow input)

Description copied from class: MapBundleFunction

Adds the given input to the given value, returning the new bundle value.

Specified by:

addInput in class MapBundleFunction<BaseRow,BaseRow,BaseRow,BaseRow>

Parameters:

value - the existing bundle value, maybe null

input - the given input, not null

finishBundle

public void finishBundle(Map<BaseRow,BaseRow> buffer,
                         Collector<BaseRow> out)
                  throws Exception

Description copied from class: MapBundleFunction

Called when a bundle is finished. Transform a bundle to zero, one, or more output elements.

Specified by:

finishBundle in class MapBundleFunction<BaseRow,BaseRow,BaseRow,BaseRow>

Throws:

Exception