com.rapidminer.operator.preprocessing.filter
Class AttributeValueTrim

java.lang.Object
  com.rapidminer.tools.AbstractObservable<Operator>
      com.rapidminer.operator.Operator
          com.rapidminer.operator.AbstractExampleSetProcessing
              com.rapidminer.operator.preprocessing.AbstractDataProcessing
                  com.rapidminer.operator.preprocessing.filter.AbstractFilteredDataProcessing
                      com.rapidminer.operator.preprocessing.AbstractValueProcessing
                          com.rapidminer.operator.preprocessing.filter.AttributeValueTrim

All Implemented Interfaces:

ConfigurationListener, PreviewListener, ResourceConsumer, ParameterHandler, LoggingHandler, Observable<Operator>

public class AttributeValueTrim
extends AbstractValueProcessing

This operator creates new attributes from nominal attributes where the new attributes contain the trimmed original values, i.e. leading and trailing spaces will be removed.

Author:

Ingo Mierswa, Helge Homburg, Tobias Malbrecht

Constructor Summary

AttributeValueTrim(OperatorDescription description)

Method Summary

ExampleSet	applyOnFiltered(ExampleSet exampleSet) Subclasses have to implement this method in order to operate only on the selected attributes.
ExampleSetMetaData	applyOnFilteredMetaData(ExampleSetMetaData emd) This method has to be implemented in order to specify the changes of the meta data caused by the application of this operator.
protected int[]	getFilterValueTypes() Defines the value types of the attributes which are processed or affected by this operator.
ResourceConsumptionEstimator	getResourceConsumptionEstimator() Subclasses can override this method if they are able to estimate the consumed resources (CPU time and memory), based on their input.
boolean	writesIntoExistingData() This method indicates whether the operator will perform a write operation on a cell in an existing column of the example set's ExampleTable.

Methods inherited from class com.rapidminer.operator.preprocessing.filter.AbstractFilteredDataProcessing

apply, getParameterTypes, modifyMetaData

Methods inherited from class com.rapidminer.operator.AbstractExampleSetProcessing

doWork, getExampleSetInputPort, getExampleSetOutputPort, getInputPort, getRequiredMetaData, shouldAutoConnect

Methods inherited from class com.rapidminer.operator.Operator

acceptsInput, addError, addError, addValue, addWarning, apply, apply, assumePreconditionsSatisfied, checkAll, checkAllExcludingMetaData, checkDeprecations, checkForStop, checkIO, checkProperties, clear, clearErrorList, cloneOperator, collectErrors, createExperimentTree, createExperimentTree, createFromXML, createFromXML, createFromXML, createMarkedExperimentTree, createMarkedProcessTree, createProcessTree, createProcessTree, disconnectPorts, execute, fireUpdate, freeMemory, getAddOnlyAdditionalOutput, getApplyCount, getCompatibilityLevel, getDeliveredOutputClasses, getDeprecationInfo, getDesiredInputClasses, getDOMRepresentation, getEncoding, getErrorList, getExecutionUnit, getExperiment, getIncompatibleVersionChanges, getInput, getInput, getInput, getInputClasses, getInputDescription, getInputPorts, getIODescription, getLog, getLogger, getName, getNumberOfBreakpoints, getOperatorClassName, getOperatorDescription, getOutputClasses, getOutputPorts, getParameter, getParameterAsBoolean, getParameterAsChar, getParameterAsColor, getParameterAsDouble, getParameterAsFile, getParameterAsFile, getParameterAsInputStream, getParameterAsInt, getParameterAsMatrix, getParameterAsRepositoryLocation, getParameterAsString, getParameterHandler, getParameterList, getParameters, getParameterTupel, getParameterType, getParent, getPortOwner, getProcess, getRoot, getStartTime, getTransformer, getUserDescription, getValue, getValues, getXML, getXML, getXML, hasBreakpoint, hasBreakpoint, hasInput, inApplyLoop, isDebugMode, isDirty, isEnabled, isExpanded, isParallel, isParameterSet, isRunning, log, log, logError, logNote, logWarning, lookupOperator, makeDirty, makeDirtyOnUpdate, notifyRenaming, performAdditionalChecks, preAutoWire, processFinished, processStarts, producesOutput, propagateDirtyness, register, registerOperator, remove, removeAndKeepConnections, rename, resume, setBreakpoint, setCompatibilityLevel, setEnabled, setEnclosingProcess, setExpanded, setInput, setListParameter, setPairParameter, setParameter, setParameters, setUserDescription, shouldAutoConnect, shouldStopStandaloneExecution, toString, transformMetaData, unregisterOperator, updateExecutionOrder, walk, writeXML, writeXML

Methods inherited from class com.rapidminer.tools.AbstractObservable

addObserver, addObserverAsFirst, fireUpdate, removeObserver

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

AttributeValueTrim

public AttributeValueTrim(OperatorDescription description)

Method Detail

applyOnFiltered

public ExampleSet applyOnFiltered(ExampleSet exampleSet)
                           throws OperatorException

Description copied from class: AbstractFilteredDataProcessing

Subclasses have to implement this method in order to operate only on the selected attributes. The results are merged back into the original example set.

Specified by:

applyOnFiltered in class AbstractFilteredDataProcessing

Throws:

OperatorException

applyOnFilteredMetaData

public ExampleSetMetaData applyOnFilteredMetaData(ExampleSetMetaData emd)

Description copied from class: AbstractFilteredDataProcessing

This method has to be implemented in order to specify the changes of the meta data caused by the application of this operator.

Specified by:

applyOnFilteredMetaData in class AbstractFilteredDataProcessing

getFilterValueTypes

protected int[] getFilterValueTypes()

Description copied from class: AbstractFilteredDataProcessing

Defines the value types of the attributes which are processed or affected by this operator. Has to be overridden to restrict the attributes which can be chosen by an AttributeSubsetSelector.

Specified by:

getFilterValueTypes in class AbstractFilteredDataProcessing

Returns:

array of value types

writesIntoExistingData

public boolean writesIntoExistingData()

Description copied from class: AbstractExampleSetProcessing

This method indicates whether the operator will perform a write operation on a cell in an existing column of the example set's ExampleTable. If yes, the original example will be completely copied in memory if the original port is used.

Specified by:

writesIntoExistingData in class AbstractExampleSetProcessing

getResourceConsumptionEstimator

public ResourceConsumptionEstimator getResourceConsumptionEstimator()

Description copied from class: Operator

Subclasses can override this method if they are able to estimate the consumed resources (CPU time and memory), based on their input. The default implementation returns null.

Specified by:

getResourceConsumptionEstimator in interface ResourceConsumer

Overrides:

getResourceConsumptionEstimator in class Operator