org.wso2.siddhi.core.query.processor.stream.function

Class Pol2CartStreamFunctionProcessor

java.lang.Object

org.wso2.siddhi.core.query.processor.stream.AbstractStreamProcessor

org.wso2.siddhi.core.query.processor.stream.function.StreamFunctionProcessor

org.wso2.siddhi.core.query.processor.stream.function.Pol2CartStreamFunctionProcessor

All Implemented Interfaces:

Processor, EternalReferencedHolder, Snapshotable

public class Pol2CartStreamFunctionProcessor
extends StreamFunctionProcessor

Created on 1/26/15.

Field Summary

Fields inherited from class org.wso2.siddhi.core.query.processor.stream.function.StreamFunctionProcessor

outputExpectsExpiredEvents

Fields inherited from class org.wso2.siddhi.core.query.processor.stream.AbstractStreamProcessor

additionalAttributes, attributeExpressionExecutors, attributeExpressionLength, complexEventPopulater, elementId, inputDefinition, nextProcessor, queryName, siddhiAppContext, streamEventCloner, streamEventClonerHolder

Constructor Summary

Constructors

Constructor and Description
Pol2CartStreamFunctionProcessor()

Method Summary

Modifier and Type	Method and Description
Map<String,Object>	currentState() Used to collect the serializable state of the processing element, that need to be persisted for the reconstructing the element to the same state on a different point of time
protected List<org.wso2.siddhi.query.api.definition.Attribute>	init(org.wso2.siddhi.query.api.definition.AbstractDefinition inputDefinition, ExpressionExecutor[] attributeExpressionExecutors, ConfigReader configReader, SiddhiAppContext siddhiAppContext) The init method of the StreamFunction
protected Object[]	process(Object data) The process method of the StreamFunction, used when single function parameter is provided
protected Object[]	process(Object[] data) The process method of the StreamFunction, used when multiple function parameters are provided
void	restoreState(Map<String,Object> state) Used to restore serialized state of the processing element, for reconstructing the element to the same state as if was on a previous point of time.
void	start() This will be called only once and this can be used to acquire required resources for the processing element.
void	stop() This will be called only once and this can be used to release the acquired resources for processing.

Methods inherited from class org.wso2.siddhi.core.query.processor.stream.function.StreamFunctionProcessor

init, processEventChunk

Methods inherited from class org.wso2.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

Constructor Detail

Pol2CartStreamFunctionProcessor

public Pol2CartStreamFunctionProcessor()

Method Detail

init

protected List<org.wso2.siddhi.query.api.definition.Attribute> init(org.wso2.siddhi.query.api.definition.AbstractDefinition inputDefinition,
                                                                    ExpressionExecutor[] attributeExpressionExecutors,
                                                                    ConfigReader configReader,
                                                                    SiddhiAppContext siddhiAppContext)

The init method of the StreamFunction

Specified by:

init in class StreamFunctionProcessor

Parameters:

inputDefinition - the incoming stream definition

attributeExpressionExecutors - the executors for the function parameters

siddhiAppContext - siddhi app context

Returns:

the additional output attributes introduced by the function

process

protected Object[] process(Object[] data)

The process method of the StreamFunction, used when multiple function parameters are provided

Specified by:

process in class StreamFunctionProcessor

Parameters:

data - the data values for the function parameters

Returns:

the date for additional output attributes introduced by the function

process

protected Object[] process(Object data)

The process method of the StreamFunction, used when single function parameter is provided

Specified by:

process in class StreamFunctionProcessor

Parameters:

data - the data value for the function parameter

Returns:

the date for additional output attribute introduced by the function

start

public void start()

Description copied from interface: EternalReferencedHolder

This will be called only once and this can be used to acquire required resources for the processing element. This will be called after initializing the system and before starting to process the events.

stop

public void stop()

Description copied from interface: EternalReferencedHolder

This will be called only once and this can be used to release the acquired resources for processing. This will be called before shutting down the system.

currentState

public Map<String,Object> currentState()

Description copied from interface: Snapshotable

Used to collect the serializable state of the processing element, that need to be persisted for the reconstructing the element to the same state on a different point of time

Returns:

stateful objects of the processing element as an array

restoreState

public void restoreState(Map<String,Object> state)

Description copied from interface: Snapshotable

Used to restore serialized state of the processing element, for reconstructing the element to the same state as if was on a previous point of time.

Parameters:

state - the stateful objects of the element as an array on the same order provided by currentState().