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

Class DelayWindowProcessor

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.SlidingWindowProcessor<S>

io.siddhi.core.query.processor.stream.window.SlidingFindableWindowProcessor<io.siddhi.core.query.processor.stream.window.TimeWindowProcessor.WindowState>

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

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

All Implemented Interfaces:

Processor, SchedulingProcessor, FindableProcessor, ExternalReferencedHolder

public class DelayWindowProcessor
extends TimeWindowProcessor

Implementation of WindowProcessor which represent a Window operating based on delay time.

Field Summary

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

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

Constructor Summary

Constructors

Constructor	Description
DelayWindowProcessor()

Method Summary

Modifier and Type	Method	Description
CompiledCondition	compileCondition(io.siddhi.query.api.expression.Expression condition, MatchingMetaInfoHolder matchingMetaInfoHolder, List<VariableExpressionExecutor> variableExpressionExecutors, Map<String,Table> tableMap, io.siddhi.core.query.processor.stream.window.TimeWindowProcessor.WindowState state, SiddhiQueryContext siddhiQueryContext)	To construct a finder having the capability of finding events at the processor that corresponds to the incoming matchingEvent and the given matching expression logic.
StreamEvent	find(StateEvent matchingEvent, CompiledCondition compiledCondition, StreamEventCloner streamEventCloner, io.siddhi.core.query.processor.stream.window.TimeWindowProcessor.WindowState state)	To find events from the processor event pool, that the matches the matchingEvent based on finder logic.
protected StateFactory	init(ExpressionExecutor[] attributeExpressionExecutors, ConfigReader configReader, 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.TimeWindowProcessor.WindowState windowState)	The main processing method that will be called upon event arrival

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

getScheduler, setScheduler, start, stop

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

compileCondition, find

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

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

Methods inherited from interface io.siddhi.core.query.processor.Processor

getNextProcessor, process, process, setNextProcessor, setToLast

Constructor Detail

DelayWindowProcessor

public DelayWindowProcessor()

Method Detail

init

protected StateFactory init(ExpressionExecutor[] attributeExpressionExecutors,
                            ConfigReader configReader,
                            SiddhiQueryContext siddhiQueryContext)

Description copied from class: SlidingWindowProcessor

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

Overrides:

init in class TimeWindowProcessor

Parameters:

attributeExpressionExecutors - the executors of each function parameters

configReader - the config reader of window

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.TimeWindowProcessor.WindowState windowState)

Description copied from class: SlidingWindowProcessor

The main processing method that will be called upon event arrival

Overrides:

process in class TimeWindowProcessor

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

windowState - current query state

find

public StreamEvent find(StateEvent matchingEvent,
                        CompiledCondition compiledCondition,
                        StreamEventCloner streamEventCloner,
                        io.siddhi.core.query.processor.stream.window.TimeWindowProcessor.WindowState state)

Description copied from class: SlidingFindableWindowProcessor

To find events from the processor event pool, that the matches the matchingEvent based on finder logic.

Overrides:

find in class TimeWindowProcessor

Parameters:

matchingEvent - the event to be matched with the events at the processor

compiledCondition - the execution element responsible for matching the corresponding events that matches the matchingEvent based on pool of events at Processor

streamEventCloner - stream event cloner

state - current query state @return the matched events

compileCondition

public CompiledCondition compileCondition(io.siddhi.query.api.expression.Expression condition,
                                          MatchingMetaInfoHolder matchingMetaInfoHolder,
                                          List<VariableExpressionExecutor> variableExpressionExecutors,
                                          Map<String,Table> tableMap,
                                          io.siddhi.core.query.processor.stream.window.TimeWindowProcessor.WindowState state,
                                          SiddhiQueryContext siddhiQueryContext)

Description copied from class: SlidingFindableWindowProcessor

To construct a finder having the capability of finding events at the processor that corresponds to the incoming matchingEvent and the given matching expression logic.

Overrides:

compileCondition in class TimeWindowProcessor

Parameters:

condition - the matching condition

matchingMetaInfoHolder - the meta structure of the incoming matchingEvent

variableExpressionExecutors - the list of variable ExpressionExecutors already created

tableMap - map of event tables

state - current query state

siddhiQueryContext - current siddhi query context

Returns:

compiled Condition having the capability of matching events against the incoming matchingEvent