org.wso2.siddhi.core.stream.input.source

Class PassThroughSourceMapper

java.lang.Object

org.wso2.siddhi.core.stream.input.source.SourceMapper

org.wso2.siddhi.core.stream.input.source.PassThroughSourceMapper

All Implemented Interfaces:

SourceEventListener

public class PassThroughSourceMapper
extends SourceMapper

Event Mapper implementation to handle pass-through scenario where user does not need to do any mapping.

Constructor Summary

Constructors

Constructor and Description
PassThroughSourceMapper()

Method Summary

Modifier and Type	Method and Description
protected boolean	allowNullInTransportProperties() Method used by SourceMapper to determine on how to handle transport properties with null values.
Class[]	getSupportedInputEventClasses() Support classes that the source-mapper can consume for mapping processing (used for validation purposes)
void	init(org.wso2.siddhi.query.api.definition.StreamDefinition streamDefinition, OptionHolder optionHolder, List<AttributeMapping> attributeMappingList, ConfigReader configReader, SiddhiAppContext siddhiAppContext) Initialize Source-mapper
protected void	mapAndProcess(Object eventObject, InputEventHandler inputEventHandler) Method to map the incoming event and as pass that via inputEventHandler to process further.

Methods inherited from class org.wso2.siddhi.core.stream.input.source.SourceMapper

getHandler, getStreamDefinition, init, onEvent, onEvent, setInputHandler

Methods inherited from class java.lang.Object

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

Constructor Detail

PassThroughSourceMapper

public PassThroughSourceMapper()

Method Detail

init

public void init(org.wso2.siddhi.query.api.definition.StreamDefinition streamDefinition,
                 OptionHolder optionHolder,
                 List<AttributeMapping> attributeMappingList,
                 ConfigReader configReader,
                 SiddhiAppContext siddhiAppContext)

Description copied from class: SourceMapper

Initialize Source-mapper

Specified by:

init in class SourceMapper

Parameters:

streamDefinition - Associated output stream definition

optionHolder - Mapper option holder

attributeMappingList - Custom attribute mapping for source-mapping

configReader - System configuration reader

siddhiAppContext - Siddhi application context

getSupportedInputEventClasses

public Class[] getSupportedInputEventClasses()

Description copied from class: SourceMapper

Support classes that the source-mapper can consume for mapping processing (used for validation purposes)

Specified by:

getSupportedInputEventClasses in class SourceMapper

Returns:

Supported event classes that mapper can process.

mapAndProcess

protected void mapAndProcess(Object eventObject,
                             InputEventHandler inputEventHandler)
                      throws InterruptedException

Description copied from class: SourceMapper

Method to map the incoming event and as pass that via inputEventHandler to process further.

Specified by:

mapAndProcess in class SourceMapper

Parameters:

eventObject - Incoming event Object

inputEventHandler - Handler to pass the converted Siddhi Event for processing

Throws:

InterruptedException - Throws InterruptedException

allowNullInTransportProperties

protected boolean allowNullInTransportProperties()

Description copied from class: SourceMapper

Method used by SourceMapper to determine on how to handle transport properties with null values. If this returns 'false' then SourceMapper will drop any event/s with null transport property values. If this returns 'true' then SourceMapper will send events even though they contains null transport properties. This method will be called after init().

Specified by:

allowNullInTransportProperties in class SourceMapper

Returns:

whether SourceMapper should allow or drop events when transport properties are null.