Package 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:

  • Field Details

  • Constructor Details

    • StorePropertiesInEnvironment

      public StorePropertiesInEnvironment()

  • Method Details

    • 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)