Package weka.knowledgeflow.steps
Class Loader
java.lang.Object
weka.knowledgeflow.steps.BaseStep
weka.knowledgeflow.steps.WekaAlgorithmWrapper
weka.knowledgeflow.steps.Loader
- All Implemented Interfaces:
Serializable,BaseStepExtender,Step
@KFStep(name="Loader",
category="DataSources",
toolTipText="Weka loader wrapper",
iconPath="")
public class Loader
extends WekaAlgorithmWrapper
implements Serializable
Knowledge Flow step that wraps
weka.core.converters.Loaders.- Version:
- $Revision: $
- Author:
- Mark Hall (mhall{[at]}pentaho{[dot]}com)
- See Also:
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionReturn the fully qualified name of a custom editor component (JComponent) to use for editing the properties of the step.Get a list of incoming connection types that this step can accept.Convenience method - callsgetWrappedAlgorithm()Get a list of outgoing connection types that this step can produce.Get the class of the wrapped algorithmoutputStructureForConnectionType(String connectionName, Environment env) If possible, get the output structure for the named connection type as a header-only set of instances.voidConvenience method - callssetWrappedAlgorithm()voidsetWrappedAlgorithm(Object algo) Set the wrapped algorithm to usevoidstart()Start executingvoidstepInit()Initialize the step.Methods inherited from class weka.knowledgeflow.steps.WekaAlgorithmWrapper
getDefaultIconPath, getDefaultPackageLevelIconPath, getIconPath, getWrappedAlgorithm, globalInfoMethods inherited from class weka.knowledgeflow.steps.BaseStep
environmentSubstitute, getDefaultSettings, getInteractiveViewers, getInteractiveViewersImpls, getName, getStepManager, isResourceIntensive, isStopRequested, outputStructureForConnectionType, processIncoming, setName, setStepIsResourceIntensive, setStepManager, setStepMustRunSingleThreaded, stepMustRunSingleThreaded, stop
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Constructor Details
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Loader
public Loader()
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Method Details
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getWrappedAlgorithmClass
Get the class of the wrapped algorithm- Specified by:
getWrappedAlgorithmClassin classWekaAlgorithmWrapper- Returns:
- the class of the wrapped algorithm
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setWrappedAlgorithm
Set the wrapped algorithm to use- Overrides:
setWrappedAlgorithmin classWekaAlgorithmWrapper- Parameters:
algo- the algorithm to use
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getLoader
Convenience method - callsgetWrappedAlgorithm()- Returns:
- the wrapped loader
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setLoader
Convenience method - callssetWrappedAlgorithm()- Parameters:
loader- the loader to use
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stepInit
Initialize the step.- Specified by:
stepInitin interfaceBaseStepExtender- Specified by:
stepInitin interfaceStep- Throws:
WekaException- if a problem occurs during initialization
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start
Start executing- Specified by:
startin interfaceBaseStepExtender- Specified by:
startin interfaceStep- Overrides:
startin classBaseStep- Throws:
WekaException- if a problem occurs
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outputStructureForConnectionType
public Instances outputStructureForConnectionType(String connectionName, Environment env) 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:
outputStructureForConnectionTypein interfaceStep- Overrides:
outputStructureForConnectionTypein classBaseStep- Parameters:
connectionName- the name of the connection type to get the output structure forenv- Environment to use- Returns:
- the output structure as a header-only Instances object
- Throws:
WekaException- if a problem occurs
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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.- Specified by:
getIncomingConnectionTypesin interfaceBaseStepExtender- Specified by:
getIncomingConnectionTypesin interfaceStep- Returns:
- a list of incoming connections that this step can accept given its current state
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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.- Specified by:
getOutgoingConnectionTypesin interfaceBaseStepExtender- Specified by:
getOutgoingConnectionTypesin interfaceStep- Returns:
- a list of outgoing connections that this step can produce
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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:
getCustomEditorForStepin interfaceStep- Overrides:
getCustomEditorForStepin classBaseStep- Returns:
- the fully qualified name of a step editor component
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