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

Class BatchingWindowProcessor

java.lang.Object

io.siddhi.core.query.processor.stream.AbstractStreamProcessor

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

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

All Implemented Interfaces:

Processor, EternalReferencedHolder, Snapshotable

Direct Known Subclasses:

AggregateWindowProcessor, BatchWindowProcessor, CronWindowProcessor, ExternalTimeBatchWindowProcessor, LengthBatchWindowProcessor, TableWindowProcessor, TimeBatchWindowProcessor

public abstract class BatchingWindowProcessor
extends WindowProcessor

Performs event processing in a tumbling manner

Field Summary

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

additionalAttributes, attributeExpressionExecutors, attributeExpressionLength, complexEventPopulater, elementId, inputDefinition, metaStreamEvent, nextProcessor, siddhiQueryContext, streamEventCloner, streamEventClonerHolder

Constructor Summary

Constructors

Constructor and Description
BatchingWindowProcessor()

Method Summary

Modifier and Type	Method and Description
ProcessingMode	getProcessingMode() Defines the behaviour of the processing, will be called after the init
protected abstract void	init(ExpressionExecutor[] attributeExpressionExecutors, ConfigReader configReader, boolean outputExpectsExpiredEvents, SiddhiQueryContext siddhiQueryContext) The init method of the WindowProcessor, this method will be called before other methods
protected List<io.siddhi.query.api.definition.Attribute>	init(MetaStreamEvent metaStreamEvent, io.siddhi.query.api.definition.AbstractDefinition inputDefinition, ExpressionExecutor[] attributeExpressionExecutors, ConfigReader configReader, boolean outputExpectsExpiredEvents, SiddhiQueryContext siddhiQueryContext) The init method of the StreamProcessor, this method will be called before other methods
protected abstract void	process(ComplexEventChunk<StreamEvent> streamEventChunk, Processor nextProcessor, StreamEventCloner streamEventCloner) The main processing method that will be called upon event arrival
protected void	processEventChunk(ComplexEventChunk<StreamEvent> streamEventChunk, Processor nextProcessor, StreamEventCloner streamEventCloner, ComplexEventPopulater complexEventPopulater) The main processing method that will be called upon event arrival

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

clean, 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 io.siddhi.core.util.extension.holder.EternalReferencedHolder

start, stop

Methods inherited from interface io.siddhi.core.util.snapshot.Snapshotable

currentState, restoreState

Constructor Detail

BatchingWindowProcessor

public BatchingWindowProcessor()

Method Detail

init

protected List<io.siddhi.query.api.definition.Attribute> init(MetaStreamEvent metaStreamEvent,
                                                              io.siddhi.query.api.definition.AbstractDefinition inputDefinition,
                                                              ExpressionExecutor[] attributeExpressionExecutors,
                                                              ConfigReader configReader,
                                                              boolean outputExpectsExpiredEvents,
                                                              SiddhiQueryContext siddhiQueryContext)

Description copied from class: AbstractStreamProcessor

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

Specified by:

init in class AbstractStreamProcessor

Parameters:

metaStreamEvent - the stream event meta

inputDefinition - the incoming stream definition

attributeExpressionExecutors - the executors of each function parameters

configReader - this hold the AbstractStreamProcessor extensions configuration reader.

outputExpectsExpiredEvents - is expired events sent as output

siddhiQueryContext - current siddhi query context

Returns:

the additional output attributes introduced by the function

init

protected abstract void init(ExpressionExecutor[] attributeExpressionExecutors,
                             ConfigReader configReader,
                             boolean outputExpectsExpiredEvents,
                             SiddhiQueryContext siddhiQueryContext)

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

Parameters:

attributeExpressionExecutors - the executors of each function parameters

configReader - the config reader of window

outputExpectsExpiredEvents - is expired events sent as output

siddhiQueryContext - the context of the siddhi query

processEventChunk

protected void processEventChunk(ComplexEventChunk<StreamEvent> streamEventChunk,
                                 Processor nextProcessor,
                                 StreamEventCloner streamEventCloner,
                                 ComplexEventPopulater complexEventPopulater)

Description copied from class: AbstractStreamProcessor

The main processing method that will be called upon event arrival

Specified by:

processEventChunk in class AbstractStreamProcessor

Parameters:

streamEventChunk - the 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

complexEventPopulater - helps to populate the events with the resultant attributes

process

protected abstract void process(ComplexEventChunk<StreamEvent> streamEventChunk,
                                Processor nextProcessor,
                                StreamEventCloner streamEventCloner)

The main processing method that will be called upon event arrival

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

getProcessingMode

public ProcessingMode getProcessingMode()

Description copied from class: AbstractStreamProcessor

Defines the behaviour of the processing, will be called after the init

Specified by:

getProcessingMode in class AbstractStreamProcessor

Returns:

ProcessingMode processing mode of the processor