Package adams.flow.transformer

Class WekaAttributeIterator

  • All Implemented Interfaces:
    adams.core.AdditionalInformationHandler, adams.core.ArrayProvider, adams.core.CleanUpHandler, adams.core.Destroyable, adams.core.GlobalInfoSupporter, adams.core.logging.LoggingLevelHandler, adams.core.logging.LoggingSupporter, adams.core.option.OptionHandler, adams.core.QuickInfoSupporter, adams.core.ShallowCopySupporter<adams.flow.core.Actor>, adams.core.SizeOfHandler, adams.core.Stoppable, adams.core.StoppableWithFeedback, adams.core.VariablesInspectionHandler, adams.event.VariableChangeListener, adams.flow.core.Actor, adams.flow.core.ArrayProvider, adams.flow.core.ErrorHandler, adams.flow.core.InputConsumer, adams.flow.core.OutputProducer, Serializable, Comparable
    public class WekaAttributeIterator
extends adams.flow.transformer.AbstractArrayProvider
    Iterates through all attributes of a dataset and outputs the names.
    The attributes can be limited with the range parameter and furthermore with the regular expression applied to the names.
    Instead of outputting the names, it is also possible to output the 1-based indices.

    Input/output:
    - accepts:
       weka.core.Instances
       weka.core.Instance
    - generates:
       java.lang.String


    -logging-level <OFF|SEVERE|WARNING|INFO|CONFIG|FINE|FINER|FINEST> (property: loggingLevel)
    The logging level for outputting errors and debugging output.
    default: WARNING
 
    -name <java.lang.String> (property: name)
    The name of the actor.
    default: WekaAttributeIterator
 
    -annotation <adams.core.base.BaseAnnotation> (property: annotations)
    The annotations to attach to this actor.
    default:
 
    -skip <boolean> (property: skip)
    If set to true, transformation is skipped and the input token is just forwarded
    as it is.
    default: false
 
    -stop-flow-on-error <boolean> (property: stopFlowOnError)
    If set to true, the flow execution at this level gets stopped in case this
    actor encounters an error; the error gets propagated; useful for critical
    actors.
    default: false
 
    -silent <boolean> (property: silent)
    If enabled, then no errors are output in the console; Note: the enclosing
    actor handler must have this enabled as well.
    default: false
 
    -output-array <boolean> (property: outputArray)
    If enabled, outputs the names/indices as an array rather than one-by-one.
    default: false
 
    -range <adams.core.Range> (property: range)
    The range of attributes to iterate over; A range is a comma-separated list
    of single 1-based indices or sub-ranges of indices ('start-end'); 'inv(..
    .)' inverts the range '...'; the following placeholders can be used as well:
     first, second, third, last_2, last_1, last.
    default: first-last
    example: A range is a comma-separated list of single 1-based indices or sub-ranges of indices ('start-end'); 'inv(...)' inverts the range '...'; the following placeholders can be used as well: first, second, third, last_2, last_1, last
 
    -regexp <adams.core.base.BaseRegExp> (property: regExp)
    The regular expression used to further limit the attribute set.
    default: .*
    more: https://docs.oracle.com/javase/tutorial/essential/regex/
    https://docs.oracle.com/javase/8/docs/api/java/util/regex/Pattern.html
 
    -output-indices <boolean> (property: outputIndices)
    If set to true, 1-based indices of matches are output instead of names.
    default: false
    Author:
    fracpete (fracpete at waikato dot ac dot nz)
    See Also:
    Serialized Form

    • Field Summary

      Fields 
      Modifier and Type Field Description
      protected boolean m_OutputIndices
      whether to output indices instead of the strings.
      protected adams.core.Range m_Range
      the range of attributes to work on.
      protected adams.core.base.BaseRegExp m_RegExp
      the regular expression applied to the attribute names.

      • Fields inherited from class adams.flow.transformer.AbstractArrayProvider

        BACKUP_INDEX, BACKUP_QUEUE, m_Index, m_OutputArray, m_Queue

      • Fields inherited from class adams.flow.transformer.AbstractTransformer

        BACKUP_INPUT, BACKUP_OUTPUT, m_InputToken, m_OutputToken

      • Fields inherited from class adams.flow.core.AbstractActor

        m_Annotations, m_BackupState, m_DetectedObjectVariables, m_DetectedVariables, m_ErrorHandler, m_Executed, m_Executing, m_ExecutionListeningSupporter, m_FullName, m_LoggingPrefix, m_Name, m_Parent, m_ScopeHandler, m_Self, m_Silent, m_Skip, m_StopFlowOnError, m_StopMessage, m_Stopped, m_StorageHandler, m_VariablesUpdated

      • Fields inherited from class adams.core.option.AbstractOptionHandler

        m_OptionManager

      • Fields inherited from class adams.core.logging.LoggingObject

        m_Logger, m_LoggingIsEnabled, m_LoggingLevel

      • Fields inherited from interface adams.flow.core.Actor

        FILE_EXTENSION, FILE_EXTENSION_GZ

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      Class[] accepts()
      Returns the class that the consumer accepts.
      void defineOptions()
      Adds options to the internal list of options.
      protected String doExecute()
      Executes the flow item.
      protected Class getItemClass()
      Returns the base class of the items.
      boolean getOutputIndices()
      Returns whether to output 1-based indices of matches instead of the names.
      String getQuickInfo()
      Returns a quick info about the actor, which will be displayed in the GUI.
      adams.core.Range getRange()
      Returns the range of attributes to operate on.
      adams.core.base.BaseRegExp getRegExp()
      Returns the regular expression for the name.
      String globalInfo()
      Returns a string describing the object.
      String outputArrayTipText()
      Returns the tip text for this property.
      String outputIndicesTipText()
      Returns the tip text for this property.
      String rangeTipText()
      Returns the tip text for this property.
      String regExpTipText()
      Returns the tip text for this property.
      void setOutputIndices​(boolean value)
      Sets whether to output 1-based indices of matches instead of the names.
      void setRange​(adams.core.Range value)
      Sets the range of attributes to operate on.
      void setRegExp​(adams.core.base.BaseRegExp value)
      Sets the regular expression for the names.

      • Methods inherited from class adams.flow.transformer.AbstractArrayProvider

        backupState, generates, getOutputArray, hasPendingOutput, output, preExecute, pruneBackup, reset, restoreState, setOutputArray, wrapUp

      • Methods inherited from class adams.flow.transformer.AbstractTransformer

        currentInput, execute, hasInput, input, postExecute

      • Methods inherited from class adams.flow.core.AbstractActor

        annotationsTipText, canInspectOptions, canPerformSetUpCheck, cleanUp, compareTo, configureLogger, destroy, equals, finalUpdateVariables, findVariables, findVariables, forceVariables, forCommandLine, forName, forName, getAdditionalInformation, getAnnotations, getDefaultName, getDetectedVariables, getErrorHandler, getFlowActors, getFlowExecutionListeningSupporter, getFullName, getName, getNextSibling, getParent, getParentComponent, getPreviousSibling, getRoot, getScopeHandler, getSilent, getSkip, getStopFlowOnError, getStopMessage, getStorageHandler, getVariables, handleError, handleException, hasErrorHandler, hasStopMessage, index, initialize, isBackedUp, isExecuted, isExecuting, isFinished, isHeadless, isStopped, nameTipText, performSetUpChecks, performVariableChecks, pruneBackup, setAnnotations, setErrorHandler, setName, setParent, setSilent, setSkip, setStopFlowOnError, setUp, setVariables, shallowCopy, shallowCopy, silentTipText, sizeOf, skipTipText, stopExecution, stopExecution, stopFlowOnErrorTipText, updateDetectedVariables, updatePrefix, updateVariables, variableChanged

      • Methods inherited from class adams.core.option.AbstractOptionHandler

        cleanUpOptions, finishInit, getDefaultLoggingLevel, getOptionManager, loggingLevelTipText, newOptionManager, setLoggingLevel, toCommandLine, toString

      • Methods inherited from class adams.core.logging.LoggingObject

        getLogger, getLoggingLevel, initializeLogging, isLoggingEnabled

      • Methods inherited from interface adams.flow.core.Actor

        cleanUp, compareTo, destroy, equals, execute, findVariables, getAnnotations, getDefaultName, getDetectedVariables, getErrorHandler, getFlowExecutionListeningSupporter, getFullName, getName, getNextSibling, getParent, getParentComponent, getPreviousSibling, getRoot, getScopeHandler, getSilent, getSkip, getStopFlowOnError, getStopMessage, getStorageHandler, getVariables, handleError, hasErrorHandler, hasStopMessage, index, isExecuted, isFinished, isHeadless, isStopped, setAnnotations, setErrorHandler, setName, setParent, setSilent, setSkip, setStopFlowOnError, setUp, setVariables, shallowCopy, shallowCopy, sizeOf, stopExecution, stopExecution, toCommandLine, variableChanged

      • Methods inherited from interface adams.core.AdditionalInformationHandler

        getAdditionalInformation

      • Methods inherited from interface adams.core.logging.LoggingLevelHandler

        getLoggingLevel, setLoggingLevel

      • Methods inherited from interface adams.core.logging.LoggingSupporter

        getLogger, isLoggingEnabled

      • Methods inherited from interface adams.core.option.OptionHandler

        cleanUpOptions, getOptionManager

      • Methods inherited from interface adams.core.VariablesInspectionHandler

        canInspectOptions

    • Field Detail

      • m_Range

        protected adams.core.Range m_Range
        the range of attributes to work on.

      • m_RegExp

        protected adams.core.base.BaseRegExp m_RegExp
        the regular expression applied to the attribute names.

      • m_OutputIndices

        protected boolean m_OutputIndices
        whether to output indices instead of the strings.

    • Constructor Detail

      • WekaAttributeIterator

        public WekaAttributeIterator()

    • Method Detail

      • globalInfo

        public String globalInfo()
        Returns a string describing the object.
        Specified by:
        globalInfo in interface adams.core.GlobalInfoSupporter
        Specified by:
        globalInfo in class adams.core.option.AbstractOptionHandler
        Returns:
        a description suitable for displaying in the gui

      • defineOptions

        public void defineOptions()
        Adds options to the internal list of options.
        Specified by:
        defineOptions in interface adams.core.option.OptionHandler
        Overrides:
        defineOptions in class adams.flow.transformer.AbstractArrayProvider

      • getQuickInfo

        public String getQuickInfo()
        Returns a quick info about the actor, which will be displayed in the GUI.
        Specified by:
        getQuickInfo in interface adams.flow.core.Actor
        Specified by:
        getQuickInfo in interface adams.core.QuickInfoSupporter
        Overrides:
        getQuickInfo in class adams.flow.core.AbstractActor
        Returns:
        null if no info available, otherwise short string

      • outputArrayTipText

        public String outputArrayTipText()
        Returns the tip text for this property.
        Specified by:
        outputArrayTipText in interface adams.core.ArrayProvider
        Specified by:
        outputArrayTipText in interface adams.flow.core.ArrayProvider
        Specified by:
        outputArrayTipText in class adams.flow.transformer.AbstractArrayProvider
        Returns:
        tip text for this property suitable for displaying in the GUI or for listing the options.

      • setRange

        public void setRange​(adams.core.Range value)
        Sets the range of attributes to operate on.
        Parameters:
        value - the range

      • getRange

        public adams.core.Range getRange()
        Returns the range of attributes to operate on.
        Returns:
        the range

      • rangeTipText

        public String rangeTipText()
        Returns the tip text for this property.
        Returns:
        tip text for this property suitable for displaying in the GUI or for listing the options.

      • setRegExp

        public void setRegExp​(adams.core.base.BaseRegExp value)
        Sets the regular expression for the names.
        Parameters:
        value - the expression

      • getRegExp

        public adams.core.base.BaseRegExp getRegExp()
        Returns the regular expression for the name.
        Returns:
        the prefix

      • regExpTipText

        public String regExpTipText()
        Returns the tip text for this property.
        Returns:
        tip text for this property suitable for displaying in the GUI or for listing the options.

      • setOutputIndices

        public void setOutputIndices​(boolean value)
        Sets whether to output 1-based indices of matches instead of the names.
        Parameters:
        value - true if to output indices

      • getOutputIndices

        public boolean getOutputIndices()
        Returns whether to output 1-based indices of matches instead of the names.
        Returns:
        true if to output indices

      • outputIndicesTipText

        public String outputIndicesTipText()
        Returns the tip text for this property.
        Returns:
        tip text for this property suitable for displaying in the GUI or for listing the options.

      • accepts

        public Class[] accepts()
        Returns the class that the consumer accepts.
        Returns:
        weka.core.Instances.class, weka.core.Instance.class

      • getItemClass

        protected Class getItemClass()
        Returns the base class of the items.
        Specified by:
        getItemClass in class adams.flow.transformer.AbstractArrayProvider
        Returns:
        the class

      • doExecute

        protected String doExecute()
        Executes the flow item.
        Specified by:
        doExecute in class adams.flow.core.AbstractActor
        Returns:
        null if everything is fine, otherwise error message