org.apache.flink.table.runtime.operators.aggregate

Class MiniBatchIncrementalGroupAggFunction

java.lang.Object

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

org.apache.flink.table.runtime.operators.aggregate.MiniBatchIncrementalGroupAggFunction

All Implemented Interfaces:

Serializable, org.apache.flink.api.common.functions.Function

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

Aggregate Function used for the incremental groupby (without window) aggregate 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
MiniBatchIncrementalGroupAggFunction(GeneratedAggsHandleFunction genPartialAggsHandler, GeneratedAggsHandleFunction genFinalAggsHandler, org.apache.flink.api.java.functions.KeySelector<BaseRow,BaseRow> finalKeySelector)

Method Summary

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

Methods inherited from class java.lang.Object

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

Constructor Detail

MiniBatchIncrementalGroupAggFunction

public MiniBatchIncrementalGroupAggFunction(GeneratedAggsHandleFunction genPartialAggsHandler,
                                            GeneratedAggsHandleFunction genFinalAggsHandler,
                                            org.apache.flink.api.java.functions.KeySelector<BaseRow,BaseRow> finalKeySelector)

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 previousAcc,
                        BaseRow input)
                 throws Exception

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:

previousAcc - the existing bundle value, maybe null

input - the given input, not null

Throws:

Exception

finishBundle

public void finishBundle(Map<BaseRow,BaseRow> buffer,
                         org.apache.flink.util.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

close

public void close()
           throws Exception

Overrides:

close in class MapBundleFunction<BaseRow,BaseRow,BaseRow,BaseRow>

Throws:

Exception