org.apache.flink.streaming.api.windowing.windowbuffer

Class SlidingCountPreReducer<T>

java.lang.Object

org.apache.flink.streaming.api.windowing.windowbuffer.WindowBuffer<T>

org.apache.flink.streaming.api.windowing.windowbuffer.SlidingPreReducer<T>

org.apache.flink.streaming.api.windowing.windowbuffer.SlidingCountPreReducer<T>

All Implemented Interfaces:

Serializable, Cloneable, PreAggregator

public class SlidingCountPreReducer<T>
extends SlidingPreReducer<T>

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected long	index

Fields inherited from class org.apache.flink.streaming.api.windowing.windowbuffer.SlidingPreReducer

currentReduced, elementsPerPreAggregate, elementsSinceLastPreAggregate, reduced, reducer, serializer, toRemove

Fields inherited from class org.apache.flink.streaming.api.windowing.windowbuffer.WindowBuffer

emitEmpty, emitPerGroup, nextID, sequentialID

Constructor Summary

Constructors

Constructor and Description
SlidingCountPreReducer(org.apache.flink.api.common.functions.ReduceFunction<T> reducer, org.apache.flink.api.common.typeutils.TypeSerializer<T> serializer, long windowSize, long slideSize, int start)

Method Summary

Modifier and Type	Method and Description
protected void	afterEmit()
protected void	afterStore()
SlidingCountPreReducer<T>	clone()
protected boolean	currentEligible(T next)
void	store(T element)

Methods inherited from class org.apache.flink.streaming.api.windowing.windowbuffer.SlidingPreReducer

addCurrentToBuffer, addFinalAggregate, addToBufferIfEligible, currentNotEmpty, emitWindow, evict, max, removeLastReduced, resetCurrent, toString, updateCurrent

Methods inherited from class org.apache.flink.streaming.api.windowing.windowbuffer.WindowBuffer

createEmptyWindow, emitEmpty, sequentialID

Methods inherited from class java.lang.Object

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

Field Detail

index

protected long index

Constructor Detail

SlidingCountPreReducer

public SlidingCountPreReducer(org.apache.flink.api.common.functions.ReduceFunction<T> reducer,
                              org.apache.flink.api.common.typeutils.TypeSerializer<T> serializer,
                              long windowSize,
                              long slideSize,
                              int start)

Method Detail

afterStore

protected void afterStore()

Overrides:

afterStore in class SlidingPreReducer<T>

store

public void store(T element)
           throws Exception

Overrides:

store in class SlidingPreReducer<T>

Throws:

Exception

currentEligible

protected boolean currentEligible(T next)

Specified by:

currentEligible in class SlidingPreReducer<T>

afterEmit

protected void afterEmit()

Overrides:

afterEmit in class SlidingPreReducer<T>

clone

public SlidingCountPreReducer<T> clone()

Specified by:

clone in class SlidingPreReducer<T>