Package io.siddhi.core.query.processor.stream.window

Class CronWindowProcessor

java.lang.Object

io.siddhi.core.query.processor.stream.AbstractStreamProcessor<S>

io.siddhi.core.query.processor.stream.window.WindowProcessor<S>

io.siddhi.core.query.processor.stream.window.BatchingWindowProcessor<io.siddhi.core.query.processor.stream.window.CronWindowProcessor.WindowState>

io.siddhi.core.query.processor.stream.window.CronWindowProcessor

All Implemented Interfaces:

Processor, ExternalReferencedHolder, org.quartz.Job

public class CronWindowProcessor
extends BatchingWindowProcessor<io.siddhi.core.query.processor.stream.window.CronWindowProcessor.WindowState>
implements org.quartz.Job

Implementation of WindowProcessor which represent a Window operating based on a cron expression.

Field Summary

Fields inherited from class io.siddhi.core.query.processor.stream.AbstractStreamProcessor

attributeExpressionExecutors, attributeExpressionLength, complexEventPopulater, inputDefinition, metaStreamEvent, nextProcessor, siddhiQueryContext, stateHolder

Constructor Summary

Constructors

Constructor	Description
CronWindowProcessor()

Method Summary

Modifier and Type	Method	Description
void	dispatchEvents()
void	execute(org.quartz.JobExecutionContext jobExecutionContext)
protected StateFactory<io.siddhi.core.query.processor.stream.window.CronWindowProcessor.WindowState>	init(ExpressionExecutor[] attributeExpressionExecutors, ConfigReader configReader, StreamEventClonerHolder streamEventClonerHolder, boolean outputExpectsExpiredEvents, boolean findToBeExecuted, SiddhiQueryContext siddhiQueryContext)	The init method of the WindowProcessor, this method will be called before other methods
protected void	process(ComplexEventChunk<StreamEvent> streamEventChunk, Processor nextProcessor, StreamEventCloner streamEventCloner, io.siddhi.core.query.processor.stream.window.CronWindowProcessor.WindowState state)	The main processing method that will be called upon event arrival
void	start()	This will be called only once and this can be used to acquire required resources for the processing element.
void	stop()	This will be called only once and this can be used to release the acquired resources for processing.

Methods inherited from class io.siddhi.core.query.processor.stream.window.BatchingWindowProcessor

getProcessingMode, init, processEventChunk

Methods inherited from class io.siddhi.core.query.processor.stream.window.WindowProcessor

getReturnAttributes

Methods inherited from class io.siddhi.core.query.processor.stream.AbstractStreamProcessor

constructStreamEventPopulater, getNextProcessor, initProcessor, isStateful, process, process, setNextProcessor, setStreamEventCloner, setToLast

Methods inherited from class java.lang.Object

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

Constructor Detail

CronWindowProcessor

public CronWindowProcessor()

Method Detail

init

protected StateFactory<io.siddhi.core.query.processor.stream.window.CronWindowProcessor.WindowState> init(ExpressionExecutor[] attributeExpressionExecutors,
                                                                                                          ConfigReader configReader,
                                                                                                          StreamEventClonerHolder streamEventClonerHolder,
                                                                                                          boolean outputExpectsExpiredEvents,
                                                                                                          boolean findToBeExecuted,
                                                                                                          SiddhiQueryContext siddhiQueryContext)

Description copied from class: BatchingWindowProcessor

The init method of the WindowProcessor, this method will be called before other methods

Specified by:

init in class BatchingWindowProcessor<io.siddhi.core.query.processor.stream.window.CronWindowProcessor.WindowState>

Parameters:

attributeExpressionExecutors - the executors of each function parameters

configReader - the config reader of window

streamEventClonerHolder - stream event cloner holder

outputExpectsExpiredEvents - is expired events sent as output

findToBeExecuted - find operation will be performed

siddhiQueryContext - the context of the siddhi query

process

protected void process(ComplexEventChunk<StreamEvent> streamEventChunk,
                       Processor nextProcessor,
                       StreamEventCloner streamEventCloner,
                       io.siddhi.core.query.processor.stream.window.CronWindowProcessor.WindowState state)

Description copied from class: BatchingWindowProcessor

The main processing method that will be called upon event arrival

Specified by:

process in class BatchingWindowProcessor<io.siddhi.core.query.processor.stream.window.CronWindowProcessor.WindowState>

Parameters:

streamEventChunk - the stream event chunk that need to be processed

nextProcessor - the next processor to which the success events need to be passed

streamEventCloner - helps to clone the incoming event for local storage or modification

state - current state of the processor

start

public void start()

Description copied from interface: ExternalReferencedHolder

This will be called only once and this can be used to acquire required resources for the processing element. This will be called after initializing the system and before starting to process the events.

Specified by:

start in interface ExternalReferencedHolder

stop

public void stop()

Description copied from interface: ExternalReferencedHolder

This will be called only once and this can be used to release the acquired resources for processing. This will be called before shutting down the system.

Specified by:

stop in interface ExternalReferencedHolder

dispatchEvents

public void dispatchEvents()

execute

public void execute(org.quartz.JobExecutionContext jobExecutionContext)
             throws org.quartz.JobExecutionException

Specified by:

execute in interface org.quartz.Job

Throws:

org.quartz.JobExecutionException