Package io.siddhi.core.query.input.stream.state

Class StreamPreStateProcessor

java.lang.Object

io.siddhi.core.query.input.stream.state.StreamPreStateProcessor

All Implemented Interfaces:

PreStateProcessor, Processor

Direct Known Subclasses:

AbsentStreamPreStateProcessor, CountPreStateProcessor, LogicalPreStateProcessor

public class StreamPreStateProcessor
extends Object
implements PreStateProcessor

The processor the gets executes before checking state conditions.

Field Summary

Fields

Modifier and Type	Field	Description
protected Comparator	eventTimeComparator
protected boolean	isStartState
protected ReentrantLock	lock
protected Processor	nextProcessor
protected SiddhiQueryContext	siddhiQueryContext
protected int[]	startStateIds
protected StateEventCloner	stateEventCloner
protected StateEventFactory	stateEventFactory
protected StateHolder<io.siddhi.core.query.input.stream.state.StreamPreStateProcessor.StreamPreState>	stateHolder
protected int	stateId
protected io.siddhi.query.api.execution.query.input.stream.StateInputStream.Type	stateType
protected StreamEventCloner	streamEventCloner
protected StreamEventFactory	streamEventFactory
protected StreamPostStateProcessor	thisLastProcessor
protected StreamPostStateProcessor	thisStatePostProcessor
protected PreStateProcessor	withinEveryPreStateProcessor
protected long	withinTime

Constructor Summary

Constructors

Constructor	Description
StreamPreStateProcessor(io.siddhi.query.api.execution.query.input.stream.StateInputStream.Type stateType)

Method Summary

Modifier and Type	Method	Description
void	addEveryState(StateEvent stateEvent)
void	addState(StateEvent stateEvent)
protected void	addState(StateEvent stateEvent, io.siddhi.core.query.input.stream.state.StreamPreStateProcessor.StreamPreState state)
void	expireEvents(long timestamp)
Processor	getNextProcessor()	Get next processor element in the processor chain.
List<StateEvent>	getPendingStateEventList()
int	getStateId()
StreamPostStateProcessor	getThisLastProcessor()
StreamPostStateProcessor	getThisStatePostProcessor()
void	init()
void	init(SiddhiQueryContext siddhiQueryContext)
protected boolean	isExpired(StateEvent pendingStateEvent, long currentTimestamp)
boolean	isStartState()
void	process(ComplexEventChunk complexEventChunk)	Process the handed StreamEvent
protected void	process(StateEvent stateEvent)
void	process(List<ComplexEventChunk> complexEventChunks)	Process the handed StreamEvent
ComplexEventChunk<StateEvent>	processAndReturn(ComplexEventChunk complexEventChunk)
protected boolean	removeOnNoStateChange(io.siddhi.query.api.execution.query.input.stream.StateInputStream.Type stateType)
void	resetState()
void	setNextProcessor(Processor processor)	Set next processor element in processor chain
void	setStartState(boolean isStartState)
void	setStartStateIds(int[] stateIds)
void	setStateEventCloner(StateEventCloner stateEventCloner)
void	setStateEventFactory(StateEventFactory stateEventFactory)
void	setStateId(int stateId)
void	setStreamEventCloner(StreamEventCloner streamEventCloner)
void	setStreamEventFactory(StreamEventFactory streamEventFactory)
void	setThisLastProcessor(StreamPostStateProcessor thisLastProcessor)
void	setThisStatePostProcessor(StreamPostStateProcessor thisStatePostProcessor)
void	setToLast(Processor processor)	Set as the last element of the processor chain
void	setWithinEveryPreStateProcessor(PreStateProcessor withinEveryPreStateProcessor)
void	setWithinTime(long withinTime)
void	stateChanged()
void	updateState()

Methods inherited from class java.lang.Object

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

Field Detail

stateId

protected int stateId

isStartState

protected boolean isStartState

stateType

protected io.siddhi.query.api.execution.query.input.stream.StateInputStream.Type stateType

withinTime

protected long withinTime

startStateIds

protected int[] startStateIds

withinEveryPreStateProcessor

protected PreStateProcessor withinEveryPreStateProcessor

thisStatePostProcessor

protected StreamPostStateProcessor thisStatePostProcessor

thisLastProcessor

protected StreamPostStateProcessor thisLastProcessor

nextProcessor

protected Processor nextProcessor

lock

protected ReentrantLock lock

stateEventFactory

protected StateEventFactory stateEventFactory

streamEventCloner

protected StreamEventCloner streamEventCloner

stateEventCloner

protected StateEventCloner stateEventCloner

streamEventFactory

protected StreamEventFactory streamEventFactory

siddhiQueryContext

protected SiddhiQueryContext siddhiQueryContext

stateHolder

protected StateHolder<io.siddhi.core.query.input.stream.state.StreamPreStateProcessor.StreamPreState> stateHolder

eventTimeComparator

protected Comparator eventTimeComparator

Constructor Detail

StreamPreStateProcessor

public StreamPreStateProcessor(io.siddhi.query.api.execution.query.input.stream.StateInputStream.Type stateType)

Method Detail

init

public void init(SiddhiQueryContext siddhiQueryContext)

getThisStatePostProcessor

public StreamPostStateProcessor getThisStatePostProcessor()

Specified by:

getThisStatePostProcessor in interface PreStateProcessor

setThisStatePostProcessor

public void setThisStatePostProcessor(StreamPostStateProcessor thisStatePostProcessor)

process

public void process(ComplexEventChunk complexEventChunk)

Process the handed StreamEvent

Specified by:

process in interface Processor

Parameters:

complexEventChunk - event chunk to be processed

process

public void process(List<ComplexEventChunk> complexEventChunks)

Description copied from interface: Processor

Process the handed StreamEvent

Specified by:

process in interface Processor

Parameters:

complexEventChunks - event chunks to be processed

isExpired

protected boolean isExpired(StateEvent pendingStateEvent,
                            long currentTimestamp)

process

protected void process(StateEvent stateEvent)

getNextProcessor

public Processor getNextProcessor()

Get next processor element in the processor chain. Processed event should be sent to next processor

Specified by:

getNextProcessor in interface Processor

Returns:

Processor next processor

setNextProcessor

public void setNextProcessor(Processor processor)

Set next processor element in processor chain

Specified by:

setNextProcessor in interface Processor

Parameters:

processor - Processor to be set as next element of processor chain

setToLast

public void setToLast(Processor processor)

Set as the last element of the processor chain

Specified by:

setToLast in interface Processor

Parameters:

processor - Last processor in the chain

init

public void init()

Specified by:

init in interface PreStateProcessor

getThisLastProcessor

public StreamPostStateProcessor getThisLastProcessor()

setThisLastProcessor

public void setThisLastProcessor(StreamPostStateProcessor thisLastProcessor)

addState

public void addState(StateEvent stateEvent)

Specified by:

addState in interface PreStateProcessor

addState

protected void addState(StateEvent stateEvent,
                        io.siddhi.core.query.input.stream.state.StreamPreStateProcessor.StreamPreState state)

addEveryState

public void addEveryState(StateEvent stateEvent)

Specified by:

addEveryState in interface PreStateProcessor

setWithinEveryPreStateProcessor

public void setWithinEveryPreStateProcessor(PreStateProcessor withinEveryPreStateProcessor)

Specified by:

setWithinEveryPreStateProcessor in interface PreStateProcessor

stateChanged

public void stateChanged()

isStartState

public boolean isStartState()

Specified by:

isStartState in interface PreStateProcessor

setStartState

public void setStartState(boolean isStartState)

Specified by:

setStartState in interface PreStateProcessor

setStateEventFactory

public void setStateEventFactory(StateEventFactory stateEventFactory)

setStreamEventFactory

public void setStreamEventFactory(StreamEventFactory streamEventFactory)

setStreamEventCloner

public void setStreamEventCloner(StreamEventCloner streamEventCloner)

setStateEventCloner

public void setStateEventCloner(StateEventCloner stateEventCloner)

resetState

public void resetState()

Specified by:

resetState in interface PreStateProcessor

updateState

public void updateState()

Specified by:

updateState in interface PreStateProcessor

expireEvents

public void expireEvents(long timestamp)

Specified by:

expireEvents in interface PreStateProcessor

processAndReturn

public ComplexEventChunk<StateEvent> processAndReturn(ComplexEventChunk complexEventChunk)

Specified by:

processAndReturn in interface PreStateProcessor

removeOnNoStateChange

protected boolean removeOnNoStateChange(io.siddhi.query.api.execution.query.input.stream.StateInputStream.Type stateType)

getStateId

public int getStateId()

Specified by:

getStateId in interface PreStateProcessor

setStateId

public void setStateId(int stateId)

Specified by:

setStateId in interface PreStateProcessor

setWithinTime

public void setWithinTime(long withinTime)

Specified by:

setWithinTime in interface PreStateProcessor

setStartStateIds

public void setStartStateIds(int[] stateIds)

Specified by:

setStartStateIds in interface PreStateProcessor

getPendingStateEventList

public List<StateEvent> getPendingStateEventList()