Package weka.knowledgeflow.steps

Class Dummy

java.lang.Object

weka.knowledgeflow.steps.BaseStep

weka.knowledgeflow.steps.Dummy

All Implemented Interfaces:

Serializable, BaseStepExtender, Step

@KFStep(name="Dummy",
        category="Misc",
        toolTipText="A step that is the equivalent of /dev/null",
        iconPath="weka/gui/knowledgeflow/icons/DiamondPlain.gif")
public class Dummy
extends BaseStep

A "dummy" no-op step

Version:

$Revision: $

Author:

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

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
Dummy()

Method Summary

Modifier and Type	Method	Description
List<String>	getIncomingConnectionTypes()	Get a list of incoming connection types that this step can accept.
List<String>	getOutgoingConnectionTypes()	Get a list of outgoing connection types that this step can produce.
void	stepInit()	Initialize the step.

Methods inherited from class weka.knowledgeflow.steps.BaseStep

environmentSubstitute, getCustomEditorForStep, getDefaultSettings, getInteractiveViewers, getInteractiveViewersImpls, getName, getStepManager, globalInfo, isResourceIntensive, isStopRequested, outputStructureForConnectionType, outputStructureForConnectionType, processIncoming, 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

Dummy

public Dummy()

Method Details

stepInit

public void stepInit()
              throws WekaException

Initialize the step.

Throws:

WekaException - if a problem occurs during initialization

getIncomingConnectionTypes

public List<String> getIncomingConnectionTypes()

Get a list of incoming connection types that this step can accept. Ideally (and if appropriate), this should take into account the state of the step and any existing incoming connections. E.g. a step might be able to accept one (and only one) incoming batch data connection.

Returns:

a list of incoming connections that this step can accept given its current state

getOutgoingConnectionTypes

public List<String> getOutgoingConnectionTypes()

Get a list of outgoing connection types that this step can produce. Ideally (and if appropriate), this should take into account the state of the step and the incoming connections. E.g. depending on what incoming connection is present, a step might be able to produce a trainingSet output, a testSet output or neither, but not both.

Returns:

a list of outgoing connections that this step can produce