org.wso2.siddhi.extension.reorder

Class KSlackExtension

java.lang.Object

org.wso2.siddhi.core.query.processor.stream.AbstractStreamProcessor

org.wso2.siddhi.core.query.processor.stream.StreamProcessor

org.wso2.siddhi.extension.reorder.KSlackExtension

All Implemented Interfaces:

org.wso2.siddhi.core.query.processor.Processor, org.wso2.siddhi.core.query.processor.SchedulingProcessor, org.wso2.siddhi.core.util.extension.holder.EternalReferencedHolder, org.wso2.siddhi.core.util.snapshot.Snapshotable

public class KSlackExtension
extends org.wso2.siddhi.core.query.processor.stream.StreamProcessor
implements org.wso2.siddhi.core.query.processor.SchedulingProcessor

The following code conducts reordering of an out-of-order event stream. This implements the K-Slack based disorder handling algorithm which was originally described in https://www2.informatik.uni-erlangen.de/publication/download/IPDPS2013.pdf

Field Summary

Fields inherited from class org.wso2.siddhi.core.query.processor.stream.StreamProcessor

outputExpectsExpiredEvents

Fields inherited from class org.wso2.siddhi.core.query.processor.stream.AbstractStreamProcessor

additionalAttributes, attributeExpressionExecutors, attributeExpressionLength, complexEventPopulater, elementId, executionPlanContext, inputDefinition, log, nextProcessor, queryName, streamEventCloner

Constructor Summary

Constructors

Constructor and Description
KSlackExtension()

Method Summary

Modifier and Type	Method and Description
Object[]	currentState()
org.wso2.siddhi.core.util.Scheduler	getScheduler()
protected List<org.wso2.siddhi.query.api.definition.Attribute>	init(org.wso2.siddhi.query.api.definition.AbstractDefinition inputDefinition, org.wso2.siddhi.core.executor.ExpressionExecutor[] attributeExpressionExecutors, org.wso2.siddhi.core.config.ExecutionPlanContext executionPlanContext)
protected void	process(org.wso2.siddhi.core.event.ComplexEventChunk<org.wso2.siddhi.core.event.stream.StreamEvent> streamEventChunk, org.wso2.siddhi.core.query.processor.Processor nextProcessor, org.wso2.siddhi.core.event.stream.StreamEventCloner streamEventCloner, org.wso2.siddhi.core.event.stream.populater.ComplexEventPopulater complexEventPopulater)
void	restoreState(Object[] state)
void	setScheduler(org.wso2.siddhi.core.util.Scheduler scheduler)
void	start()
void	stop()

Methods inherited from class org.wso2.siddhi.core.query.processor.stream.StreamProcessor

init, processEventChunk

Methods inherited from class org.wso2.siddhi.core.query.processor.stream.AbstractStreamProcessor

cloneProcessor, constructStreamEventPopulater, getElementId, getNextProcessor, initProcessor, process, setNextProcessor, setStreamEventCloner, setToLast

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.wso2.siddhi.core.query.processor.Processor

cloneProcessor, getNextProcessor, process, setNextProcessor, setToLast

Constructor Detail

KSlackExtension

public KSlackExtension()

Method Detail

start

public void start()

Specified by:

start in interface org.wso2.siddhi.core.util.extension.holder.EternalReferencedHolder

stop

public void stop()

Specified by:

stop in interface org.wso2.siddhi.core.util.extension.holder.EternalReferencedHolder

currentState

public Object[] currentState()

Specified by:

currentState in interface org.wso2.siddhi.core.util.snapshot.Snapshotable

restoreState

public void restoreState(Object[] state)

Specified by:

restoreState in interface org.wso2.siddhi.core.util.snapshot.Snapshotable

process

protected void process(org.wso2.siddhi.core.event.ComplexEventChunk<org.wso2.siddhi.core.event.stream.StreamEvent> streamEventChunk,
                       org.wso2.siddhi.core.query.processor.Processor nextProcessor,
                       org.wso2.siddhi.core.event.stream.StreamEventCloner streamEventCloner,
                       org.wso2.siddhi.core.event.stream.populater.ComplexEventPopulater complexEventPopulater)

Specified by:

process in class org.wso2.siddhi.core.query.processor.stream.StreamProcessor

init

protected List<org.wso2.siddhi.query.api.definition.Attribute> init(org.wso2.siddhi.query.api.definition.AbstractDefinition inputDefinition,
                                                                    org.wso2.siddhi.core.executor.ExpressionExecutor[] attributeExpressionExecutors,
                                                                    org.wso2.siddhi.core.config.ExecutionPlanContext executionPlanContext)

Specified by:

init in class org.wso2.siddhi.core.query.processor.stream.StreamProcessor

setScheduler

public void setScheduler(org.wso2.siddhi.core.util.Scheduler scheduler)

Specified by:

setScheduler in interface org.wso2.siddhi.core.query.processor.SchedulingProcessor

getScheduler

public org.wso2.siddhi.core.util.Scheduler getScheduler()

Specified by:

getScheduler in interface org.wso2.siddhi.core.query.processor.SchedulingProcessor