Package weka.knowledgeflow.steps

Class ClassAssigner

java.lang.Object

weka.knowledgeflow.steps.BaseStep

weka.knowledgeflow.steps.ClassAssigner

All Implemented Interfaces:

Serializable, BaseStepExtender, Step

@KFStep(name="ClassAssigner",
        category="Evaluation",
        toolTipText="Designate which column is to be considered the class column in incoming data.",
        iconPath="weka/gui/knowledgeflow/icons/ClassAssigner.gif")
public class ClassAssigner
extends BaseStep

Knowledge Flow step for assigning a class attribute in incoming data

Version:

$Revision: $

Author:

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

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
ClassAssigner()

Method Summary

Modifier and Type	Method	Description
String	getClassColumn()	Get the class column to use
String	getCustomEditorForStep()	Get the custom editor for this step
List<String>	getIncomingConnectionTypes()	Get the incoming connections that this step can accept at this time
List<String>	getOutgoingConnectionTypes()	Get the outgoing connection types that this step can produce at this time
Instances	outputStructureForConnectionType(String connectionName)	Return the structure of data output by this step for a given incoming connection type
void	processIncoming(Data data)	Process incoming data
void	setClassColumn(String col)	Set the class column to use
void	stepInit()	Initialize the step prior to execution

Methods inherited from class weka.knowledgeflow.steps.BaseStep

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

Methods inherited from class java.lang.Object

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

Constructor Details

ClassAssigner

public ClassAssigner()

Method Details

setClassColumn

public void setClassColumn(String col)

Set the class column to use

Parameters:

col - the class column to use

getClassColumn

public String getClassColumn()

Get the class column to use

Returns:

the class column to use

stepInit

public void stepInit()
              throws WekaException

Initialize the step prior to execution

Throws:

WekaException - if a problem occurs

processIncoming

public void processIncoming(Data data)
                     throws WekaException

Process incoming data

Specified by:

processIncoming in interface BaseStepExtender

Specified by:

processIncoming in interface Step

Overrides:

processIncoming in class BaseStep

Parameters:

data - the data to process

Throws:

WekaException - if a problem occurs

getIncomingConnectionTypes

public List<String> getIncomingConnectionTypes()

Get the incoming connections that this step can accept at this time

Returns:

a list of incoming connection types that can be accepted

getOutgoingConnectionTypes

public List<String> getOutgoingConnectionTypes()

Get the outgoing connection types that this step can produce at this time

Returns:

a list of outgoing connections that can be produced

outputStructureForConnectionType

public Instances outputStructureForConnectionType(String connectionName)
                                           throws WekaException

Return the structure of data output by this step for a given incoming connection type

Specified by:

outputStructureForConnectionType in interface Step

Overrides:

outputStructureForConnectionType in class BaseStep

Parameters:

connectionName - the incoming connection type

Returns:

the structure (header-only instances) of the output

Throws:

WekaException - if a problem occurs

getCustomEditorForStep

public String getCustomEditorForStep()

Get the custom editor for this step

Specified by:

getCustomEditorForStep in interface Step

Overrides:

getCustomEditorForStep in class BaseStep

Returns:

the fully qualified class name of the clustom editor for this step