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

Class SlidingFindableWindowProcessor<S extends State>

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<S>

Type Parameters:

S - current state of the processor

All Implemented Interfaces:

Processor, FindableProcessor, ExternalReferencedHolder

Direct Known Subclasses:

ExpressionWindowProcessor, ExternalTimeWindowProcessor, FrequentWindowProcessor, LengthWindowProcessor, LossyFrequentWindowProcessor, SortWindowProcessor, TimeLengthWindowProcessor, TimeWindowProcessor

public abstract class SlidingFindableWindowProcessor<S extends State>
extends SlidingWindowProcessor<S>
implements FindableProcessor

Performs event processing in a sliding manner while supporting event search

Field Summary

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

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

Constructor Summary

Constructors

Constructor	Description
SlidingFindableWindowProcessor()

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, 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.
abstract CompiledCondition	compileCondition(io.siddhi.query.api.expression.Expression condition, MatchingMetaInfoHolder matchingMetaInfoHolder, List<VariableExpressionExecutor> variableExpressionExecutors, Map<String,Table> tableMap, S 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)	To find events from the processor event pool, that the matches the matchingEvent based on finder logic.
abstract StreamEvent	find(StateEvent matchingEvent, CompiledCondition compiledCondition, StreamEventCloner streamEventCloner, S state)	To find events from the processor event pool, that the matches the matchingEvent based on finder logic.

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

getProcessingMode, init, init, process, 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.util.extension.holder.ExternalReferencedHolder

start, stop

Constructor Detail

SlidingFindableWindowProcessor

public SlidingFindableWindowProcessor()

Method Detail

compileCondition

public CompiledCondition compileCondition(io.siddhi.query.api.expression.Expression condition,
                                          MatchingMetaInfoHolder matchingMetaInfoHolder,
                                          List<VariableExpressionExecutor> variableExpressionExecutors,
                                          Map<String,Table> tableMap,
                                          SiddhiQueryContext siddhiQueryContext)

Description copied from interface: FindableProcessor

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.

Specified by:

compileCondition in interface FindableProcessor

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

siddhiQueryContext - current siddhi query context

Returns:

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

find

public StreamEvent find(StateEvent matchingEvent,
                        CompiledCondition compiledCondition)

Description copied from interface: FindableProcessor

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

Specified by:

find in interface FindableProcessor

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

Returns:

the matched events

compileCondition

public abstract CompiledCondition compileCondition(io.siddhi.query.api.expression.Expression condition,
                                                   MatchingMetaInfoHolder matchingMetaInfoHolder,
                                                   List<VariableExpressionExecutor> variableExpressionExecutors,
                                                   Map<String,Table> tableMap,
                                                   S 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.

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

find

public abstract StreamEvent find(StateEvent matchingEvent,
                                 CompiledCondition compiledCondition,
                                 StreamEventCloner streamEventCloner,
                                 S state)

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

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