org.wso2.siddhi.core.query.selector.attribute.aggregator.incremental

Class IncrementalExecutor

java.lang.Object

org.wso2.siddhi.core.query.selector.attribute.aggregator.incremental.IncrementalExecutor

All Implemented Interfaces:

Executor

public class IncrementalExecutor
extends Object
implements Executor

Incremental executor class which is responsible for performing incremental aggregation.

Constructor Summary

Constructors

Constructor and Description
IncrementalExecutor(org.wso2.siddhi.query.api.aggregation.TimePeriod.Duration duration, List<ExpressionExecutor> processExpressionExecutors, GroupByKeyGenerator groupByKeyGenerator, MetaStreamEvent metaStreamEvent, int bufferSize, boolean ignoreEventsOlderThanBuffer, IncrementalExecutor child, boolean isRoot, Table table, boolean isProcessingOnExternalTime)

Method Summary

Modifier and Type	Method and Description
void	execute(ComplexEventChunk streamEventChunk) Execute the handed StreamEvent
long	getNewestEventTimestamp()
Executor	getNextExecutor() Get next executor element in the execution chain.
long	getOldestEventTimestamp()
void	setNextExecutor(Executor nextExecutor) Set next executor element in execution chain
void	setScheduler(Scheduler scheduler)

Methods inherited from class java.lang.Object

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

Constructor Detail

IncrementalExecutor

public IncrementalExecutor(org.wso2.siddhi.query.api.aggregation.TimePeriod.Duration duration,
                           List<ExpressionExecutor> processExpressionExecutors,
                           GroupByKeyGenerator groupByKeyGenerator,
                           MetaStreamEvent metaStreamEvent,
                           int bufferSize,
                           boolean ignoreEventsOlderThanBuffer,
                           IncrementalExecutor child,
                           boolean isRoot,
                           Table table,
                           boolean isProcessingOnExternalTime)

Method Detail

setScheduler

public void setScheduler(Scheduler scheduler)

execute

public void execute(ComplexEventChunk streamEventChunk)

Description copied from interface: Executor

Execute the handed StreamEvent

Specified by:

execute in interface Executor

Parameters:

streamEventChunk - event chunk to be processed

getNextExecutor

public Executor getNextExecutor()

Description copied from interface: Executor

Get next executor element in the execution chain. Executed event should be sent to next executor

Specified by:

getNextExecutor in interface Executor

Returns:

next executor

setNextExecutor

public void setNextExecutor(Executor nextExecutor)

Description copied from interface: Executor

Set next executor element in execution chain

Specified by:

setNextExecutor in interface Executor

Parameters:

nextExecutor - Event executor for incremental execution

getOldestEventTimestamp

public long getOldestEventTimestamp()

getNewestEventTimestamp

public long getNewestEventTimestamp()