Package weka.knowledgeflow.steps

Class DataGenerator

java.lang.Object

weka.knowledgeflow.steps.BaseStep

weka.knowledgeflow.steps.WekaAlgorithmWrapper

weka.knowledgeflow.steps.DataGenerator

All Implemented Interfaces:

Serializable, BaseStepExtender, Step

@KFStep(name="DataGenerator",
        category="DataGenerators",
        toolTipText="Weka data generator wrapper",
        iconPath="")
public class DataGenerator
extends WekaAlgorithmWrapper

Step that wraps a Weka DataGenerator.

Version:

$Revision: $

Author:

Mark Hall (mhall{[at]}pentaho{[dot]}com)

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
DataGenerator()

Method Summary

Modifier and Type	Method	Description
DataGenerator	getDataGenerator()	get the data generator
List<String>	getIncomingConnectionTypes()	Get acceptable incoming connection types.
List<String>	getOutgoingConnectionTypes()	Get a list of outgoing connection types
Class	getWrappedAlgorithmClass()	Get the class of the wrapped algorithm
Instances	outputStructureForConnectionType(String connectionName)	If possible, get the output structure for the named connection type as a header-only set of instances.
void	setDataGenerator(DataGenerator dataGenerator)	Set the data generator
void	setWrappedAlgorithm(Object algo)	Set the algorithm to wrap
void	start()	Start the data generation process.
void	stepInit()	Initialize the step.

Methods inherited from class weka.knowledgeflow.steps.WekaAlgorithmWrapper

getDefaultIconPath, getDefaultPackageLevelIconPath, getIconPath, getWrappedAlgorithm, globalInfo

Methods inherited from class weka.knowledgeflow.steps.BaseStep

environmentSubstitute, getCustomEditorForStep, getDefaultSettings, getInteractiveViewers, getInteractiveViewersImpls, getName, getStepManager, isResourceIntensive, isStopRequested, outputStructureForConnectionType, processIncoming, setName, setStepIsResourceIntensive, setStepManager, setStepMustRunSingleThreaded, stepMustRunSingleThreaded, stop

Methods inherited from class java.lang.Object

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

Constructor Details

DataGenerator

public DataGenerator()

Method Details

getWrappedAlgorithmClass

public Class getWrappedAlgorithmClass()

Get the class of the wrapped algorithm

Specified by:

getWrappedAlgorithmClass in class WekaAlgorithmWrapper

Returns:

the class of the wrapped algorithm

setWrappedAlgorithm

public void setWrappedAlgorithm(Object algo)

Set the algorithm to wrap

Overrides:

setWrappedAlgorithm in class WekaAlgorithmWrapper

Parameters:

algo - the algorithm to wrao

getDataGenerator

public DataGenerator getDataGenerator()

get the data generator

Returns:

the data generator

setDataGenerator

@ProgrammaticProperty
public void setDataGenerator(DataGenerator dataGenerator)

Set the data generator

Parameters:

dataGenerator -

stepInit

public void stepInit()

Initialize the step. Nothing to do in this case.

start

public void start()
           throws WekaException

Start the data generation process.

Specified by:

start in interface BaseStepExtender

Specified by:

start in interface Step

Overrides:

start in class BaseStep

Throws:

WekaException - if a problem occurs

outputStructureForConnectionType

public Instances outputStructureForConnectionType(String connectionName)
                                           throws WekaException

If possible, get the output structure for the named connection type as a header-only set of instances. Can return null if the specified connection type is not representable as Instances or cannot be determined at present.

Specified by:

outputStructureForConnectionType in interface Step

Overrides:

outputStructureForConnectionType in class BaseStep

Parameters:

connectionName - the name of the connection type to get the output structure for

Returns:

the output structure as a header-only Instances object

Throws:

WekaException - if a problem occurs

getIncomingConnectionTypes

public List<String> getIncomingConnectionTypes()

Get acceptable incoming connection types. None in this case since this step is a start point

Returns:

null (no acceptable incoming connections)

getOutgoingConnectionTypes

public List<String> getOutgoingConnectionTypes()

Get a list of outgoing connection types

Returns:

a list of outgoing connection types