org.wso2.siddhi.core.query.processor

Interface Processor

All Known Subinterfaces:

AbsentPreStateProcessor, PostStateProcessor, PreStateProcessor, SchedulingProcessor

All Known Implementing Classes:

AbsentLogicalPostStateProcessor, AbsentLogicalPreStateProcessor, AbsentStreamPostStateProcessor, AbsentStreamPreStateProcessor, AbstractStreamProcessor, AggregateWindowProcessor, BatchWindowProcessor, CountPostStateProcessor, CountPreStateProcessor, CronWindowProcessor, DelayWindowProcessor, EntryValveProcessor, ExternalTimeBatchWindowProcessor, ExternalTimeWindowProcessor, FilterProcessor, FrequentWindowProcessor, IncrementalAggregationProcessor, JoinProcessor, LengthBatchWindowProcessor, LengthWindowProcessor, LogicalPostStateProcessor, LogicalPreStateProcessor, LogStreamProcessor, LossyFrequentWindowProcessor, Pol2CartStreamFunctionProcessor, QuerySelector, SessionWindowProcessor, SortWindowProcessor, StreamFunctionProcessor, StreamPostStateProcessor, StreamPreStateProcessor, StreamProcessor, TableWindowProcessor, TimeBatchWindowProcessor, TimeLengthWindowProcessor, TimeWindowProcessor, WindowProcessor, WindowWindowProcessor

public interface Processor

Parent interface representing Event Processors in Siddhi. Event Processors are the execution unit which will do the actual event processing. Each Siddhi app will map to a chain of these processors. process() will receive ComplexEventChunk which will be processed by the Processor and then handed over to the next Processor in-line.

Method Summary

Modifier and Type	Method and Description
void	clean() Used to clean its references
Processor	cloneProcessor(String key) Clone a copy of processor
Processor	getNextProcessor() Get next processor element in the processor chain.
void	process(ComplexEventChunk complexEventChunk) Process the handed StreamEvent
void	setNextProcessor(Processor processor) Set next processor element in processor chain
void	setToLast(Processor processor) Set as the last element of the processor chain

Method Detail

process

void process(ComplexEventChunk complexEventChunk)

Process the handed StreamEvent

Parameters:

complexEventChunk - event chunk to be processed

getNextProcessor

Processor getNextProcessor()

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

Returns:

next processor

setNextProcessor

void setNextProcessor(Processor processor)

Set next processor element in processor chain

Parameters:

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

setToLast

void setToLast(Processor processor)

Set as the last element of the processor chain

Parameters:

processor - Last processor in the chain

cloneProcessor

Processor cloneProcessor(String key)

Clone a copy of processor

Parameters:

key - partition key

Returns:

cloned processor

clean

void clean()

Used to clean its references