Package io.activej.aggregation

Class AggregationGroupReducer<C,T,K extends Comparable>

java.lang.Object

io.activej.datastream.AbstractStreamConsumer<T>

io.activej.aggregation.AggregationGroupReducer<C,T,K>

All Implemented Interfaces:

io.activej.async.process.AsyncCloseable, StreamConsumer<T>, StreamDataAcceptor<T>

public final class AggregationGroupReducer<C,T,K extends Comparable>
extends AbstractStreamConsumer<T>
implements StreamDataAcceptor<T>

Field Summary

Fields inherited from class io.activej.datastream.AbstractStreamConsumer

eventloop

Fields inherited from interface io.activej.async.process.AsyncCloseable

STATIC

Constructor Summary

Constructors

Constructor	Description
AggregationGroupReducer(@NotNull AggregationChunkStorage<C> storage, @NotNull AggregationStructure aggregation, @NotNull List<String> measures, @NotNull Class<T> recordClass, @NotNull PartitionPredicate<T> partitionPredicate, @NotNull Function<T,K> keyFunction, @NotNull Aggregate<T,Object> aggregate, int chunkSize, @NotNull DefiningClassLoader classLoader)

Method Summary

Modifier and Type	Method	Description
void	accept(T item)
void	flush()
int	getBufferSize()
io.activej.promise.Promise<List<AggregationChunk>>	getResult()
protected void	onEndOfStream()
protected void	onError(Exception e)
protected void	onStarted()
String	toString()

Methods inherited from class io.activej.datastream.AbstractStreamConsumer

acknowledge, closeEx, consume, getAcknowledgement, getDataAcceptor, getSupplier, isEndOfStream, isStarted, onCleanup, onComplete, onInit, resume, suspend

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.activej.async.process.AsyncCloseable

close

Methods inherited from interface io.activej.datastream.StreamConsumer

isComplete, isException, isResult, transformWith, withAcknowledgement

Constructor Details

AggregationGroupReducer

public AggregationGroupReducer(@NotNull
 @NotNull AggregationChunkStorage<C> storage,
 @NotNull
 @NotNull AggregationStructure aggregation,
 @NotNull
 @NotNull List<String> measures,
 @NotNull
 @NotNull Class<T> recordClass,
 @NotNull
 @NotNull PartitionPredicate<T> partitionPredicate,
 @NotNull
 @NotNull Function<T,K> keyFunction,
 @NotNull
 @NotNull Aggregate<T,Object> aggregate,
 int chunkSize,
 @NotNull
 @NotNull DefiningClassLoader classLoader)

Method Details

getResult

public io.activej.promise.Promise<List<AggregationChunk>> getResult()

accept

public void accept(T item)

Specified by:

accept in interface StreamDataAcceptor<C>

onStarted

protected void onStarted()

Overrides:

onStarted in class AbstractStreamConsumer<T>

onEndOfStream

protected void onEndOfStream()

Overrides:

onEndOfStream in class AbstractStreamConsumer<T>

onError

protected void onError(Exception e)

Overrides:

onError in class AbstractStreamConsumer<T>

flush

public void flush()

getBufferSize

public int getBufferSize()

toString

public String toString()

Overrides:

toString in class Object