Package weka.knowledgeflow.steps

Class BaseSimpleDataVisualizer

java.lang.Object

weka.knowledgeflow.steps.BaseStep

weka.knowledgeflow.steps.BaseSimpleDataVisualizer

All Implemented Interfaces:

Serializable, BaseStepExtender, DataCollector, Step

Direct Known Subclasses:

AttributeSummarizer, CostBenefitAnalysis, GraphViewer, ScatterPlotMatrix

public abstract class BaseSimpleDataVisualizer
extends BaseStep
implements DataCollector

Abstract base class for simple data visualization steps that just collect data sets for visualization.

Version:

$Revision: $

Author:

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

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
BaseSimpleDataVisualizer()

Method Summary

Modifier and Type	Method	Description
List<Data>	getDatasets()	Get the datasets seen so far
List<String>	getIncomingConnectionTypes()	Get a list of incoming connection types that this step can accept at this time
List<String>	getOutgoingConnectionTypes()	Get a list of outgoing connection types that this step can produce at this time.
void	processIncoming(Data data)	Process incoming data
void	restoreData(Object data)	Set the data for this collector
Object	retrieveData()	Get the data that this collector has collected
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, 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

BaseSimpleDataVisualizer

public BaseSimpleDataVisualizer()

Method Details

stepInit

public void stepInit()
              throws WekaException

Description copied from interface: Step

Initialize the step.

Specified by:

stepInit in interface BaseStepExtender

Specified by:

stepInit in interface Step

Throws:

WekaException - if a problem occurs during initialization

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 a list of incoming connection types that this step can accept at this time

Specified by:

getIncomingConnectionTypes in interface BaseStepExtender

Specified by:

getIncomingConnectionTypes in interface Step

Returns:

a list of incoming connection types

getOutgoingConnectionTypes

public List<String> getOutgoingConnectionTypes()

Get a list of outgoing connection types that this step can produce at this time. Subclasses to override (if necessary). This default implementation returns null (i.e. does not produce any outgoing data).

Specified by:

getOutgoingConnectionTypes in interface BaseStepExtender

Specified by:

getOutgoingConnectionTypes in interface Step

Returns:

a list of outgoing connection types that this step can produce

getDatasets

public List<Data> getDatasets()

Get the datasets seen so far

Returns:

a list of datasets

retrieveData

public Object retrieveData()

Description copied from interface: DataCollector

Get the data that this collector has collected

Specified by:

retrieveData in interface DataCollector

Returns:

the data collected by this collector

restoreData

public void restoreData(Object data)
                 throws WekaException

Description copied from interface: DataCollector

Set the data for this collector

Specified by:

restoreData in interface DataCollector

Parameters:

data - the data to set

Throws:

WekaException - if there is a problem restoring data