weka.knowledgeflow.steps

Class StorePropertiesInEnvironment

java.lang.Object

weka.knowledgeflow.steps.BaseStep

weka.knowledgeflow.steps.StorePropertiesInEnvironment

All Implemented Interfaces:

Serializable, BaseStepExtender, Step

@KFStep(name="StorePropertiesInEnvironment",
        category="Flow",
        toolTipText="Store property settings for a particular algorithm-based step (eg Classifier, Clusterer etc) in the flow environment. When connected to a downstream Job step, the sub-flow executed by the Job can use a SetPropertiesFromEnvironment step to access the stored properties and set them on the underlying scheme in an algorithm-based step. Each property is configured by specifying the attribute in the incoming instance to obtain its value from, the target scheme-based step (in the sub-flow) that will receive it, the property name/path to set on the target step and a default property value (optional) to use if the value is missing in the incoming instance. If the property/path field is left blank, then it is assumed that the value is actually a scheme + options spec in command-line form; otherwise, the value is set by processing the property path - e.g. if our target step to receive property settings was Bagging (itself with default settings), and the property path to set was \'classifier.maxDepth\', then the classifier property of Bagging would yield a REPTree base classifier and the maxDepth property of REPTree would be set. Note that the SetPropertiesFromEnvironment step will process property settings in the order that they are defined by this step. This means that it is possible to set the entire base learner for a Classifier stepwith one property setting and then drill down to a particular option in the base learner using a second property setting.",
        iconPath="weka/gui/knowledgeflow/icons/StorePropertiesInEnvironment.gif")
public class StorePropertiesInEnvironment
extends BaseStep

Stores property values specified in incoming instances in the flow environment.

Version:

$Revision: $

Author:

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

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static String	SEP1 Separators for internal variable specification
static String	SEP2

Constructor Summary

Constructors

Constructor and Description
StorePropertiesInEnvironment()

Method Summary

Modifier and Type	Method and Description
String	getCustomEditorForStep() Return the fully qualified name of a custom editor component (JComponent) to use for editing the properties of the step.
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.
String	getPropsInternalRep()
static Map<String,List<String>>	internalDynamicToMap(String internalRep)
void	processIncoming(Data data) Process an incoming data payload (if the step accepts incoming connections)
void	setPropsInternalRep(String rep)
void	stepInit() Initialize the step.

Methods inherited from class weka.knowledgeflow.steps.BaseStep

environmentSubstitute, 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

Field Detail

SEP1

public static final String SEP1

Separators for internal variable specification

See Also:

Constant Field Values

SEP2

public static final String SEP2

See Also:

Constant Field Values

Constructor Detail

StorePropertiesInEnvironment

public StorePropertiesInEnvironment()

Method Detail

setPropsInternalRep

@ProgrammaticProperty
public void setPropsInternalRep(String rep)

getPropsInternalRep

public String getPropsInternalRep()

stepInit

public void stepInit()
              throws WekaException

Description copied from interface: Step

Initialize the step.

Throws:

WekaException - if a problem occurs during initialization

processIncoming

public void processIncoming(Data data)
                     throws WekaException

Description copied from class: BaseStep

Process an incoming data payload (if the step accepts incoming connections)

Specified by:

processIncoming in interface BaseStepExtender

Specified by:

processIncoming in interface Step

Overrides:

processIncoming in class BaseStep

Parameters:

data - the payload to process

Throws:

WekaException - if a problem occurs

getIncomingConnectionTypes

public List<String> getIncomingConnectionTypes()

Description copied from interface: Step

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()

Description copied from interface: Step

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

getCustomEditorForStep

public String getCustomEditorForStep()

Return the fully qualified name of a custom editor component (JComponent) to use for editing the properties of the step. This method can return null, in which case the system will dynamically generate an editor using the GenericObjectEditor

Specified by:

getCustomEditorForStep in interface Step

Overrides:

getCustomEditorForStep in class BaseStep

Returns:

the fully qualified name of a step editor component

internalDynamicToMap

public static Map<String,List<String>> internalDynamicToMap(String internalRep)