Package org.tribuo.data.columnar.processors.field

Class DateFieldProcessor

java.lang.Object

org.tribuo.data.columnar.processors.field.DateFieldProcessor

All Implemented Interfaces:

com.oracle.labs.mlrg.olcut.config.Configurable, com.oracle.labs.mlrg.olcut.provenance.Provenancable<com.oracle.labs.mlrg.olcut.provenance.ConfiguredObjectProvenance>, FieldProcessor

public final class DateFieldProcessor
extends Object
implements FieldProcessor

Processes a column that contains a date value. The features are named based on the column name and the feature type extracted.

This class uses LocalDate

Returns an empty list if the date failed to parse or was empty.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	DateFieldProcessor.DateFeatureType	The types of date features which can be extracted.

Nested classes/interfaces inherited from interface org.tribuo.data.columnar.FieldProcessor

FieldProcessor.GeneratedFeatureType

Field Summary

Fields inherited from interface org.tribuo.data.columnar.FieldProcessor

NAMESPACE

Constructor Summary

Constructors

Constructor	Description
DateFieldProcessor(String fieldName, EnumSet<DateFieldProcessor.DateFeatureType> featureTypes, String dateFormat)	Constructs a field processor which parses a date from the specified field name using the supplied format string then extracts date features according to the supplied EnumSet.
DateFieldProcessor(String fieldName, EnumSet<DateFieldProcessor.DateFeatureType> featureTypes, String dateFormat, String localeLanguage, String localeCountry)	Constructs a field processor which parses a date from the specified field name using the supplied format string then extracts date features according to the supplied EnumSet.

Method Summary

Modifier and Type	Method	Description
FieldProcessor	copy(String newFieldName)	Returns a copy of this FieldProcessor bound to the supplied newFieldName.
FieldProcessor.GeneratedFeatureType	getFeatureType()	Returns the feature type this FieldProcessor generates.
String	getFieldName()	Gets the field name this FieldProcessor uses.
com.oracle.labs.mlrg.olcut.provenance.ConfiguredObjectProvenance	getProvenance()
void	postConfig()	Used by the OLCUT configuration system, and should not be called by external code.
List<ColumnarFeature>	process(String value)	Processes the field value and generates a (possibly empty) list of ColumnarFeatures.
String	toString()

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.tribuo.data.columnar.FieldProcessor

getNumNamespaces

Constructor Details

DateFieldProcessor

public DateFieldProcessor(String fieldName,
 EnumSet<DateFieldProcessor.DateFeatureType> featureTypes,
 String dateFormat)

Constructs a field processor which parses a date from the specified field name using the supplied format string then extracts date features according to the supplied EnumSet.

Defaults to Locale.US.

Throws IllegalArgumentException if the date format is invalid.

Parameters:

fieldName - The field name to read.

featureTypes - The features to extract.

dateFormat - The date format to use.

DateFieldProcessor

public DateFieldProcessor(String fieldName,
 EnumSet<DateFieldProcessor.DateFeatureType> featureTypes,
 String dateFormat,
 String localeLanguage,
 String localeCountry)

Constructs a field processor which parses a date from the specified field name using the supplied format string then extracts date features according to the supplied EnumSet.

Throws IllegalArgumentException if the date format is invalid.

Parameters:

fieldName - The field name to read.

featureTypes - The features to extract.

dateFormat - The date format to use.

localeLanguage - The Locale language.

localeCountry - The Locale country.

Method Details

postConfig

public void postConfig()

Used by the OLCUT configuration system, and should not be called by external code.

Specified by:

postConfig in interface com.oracle.labs.mlrg.olcut.config.Configurable

getFieldName

public String getFieldName()

Description copied from interface: FieldProcessor

Gets the field name this FieldProcessor uses.

Specified by:

getFieldName in interface FieldProcessor

Returns:

The field name.

process

public List<ColumnarFeature> process(String value)

Description copied from interface: FieldProcessor

Processes the field value and generates a (possibly empty) list of ColumnarFeatures.

Specified by:

process in interface FieldProcessor

Parameters:

value - The field value to process.

Returns:

A list of ColumnarFeatures.

getFeatureType

public FieldProcessor.GeneratedFeatureType getFeatureType()

Description copied from interface: FieldProcessor

Returns the feature type this FieldProcessor generates.

Specified by:

getFeatureType in interface FieldProcessor

Returns:

The feature type.

copy

public FieldProcessor copy(String newFieldName)

Description copied from interface: FieldProcessor

Returns a copy of this FieldProcessor bound to the supplied newFieldName.

Specified by:

copy in interface FieldProcessor

Parameters:

newFieldName - The new field name for the copy.

Returns:

A copy of this FieldProcessor.

toString

public String toString()

Overrides:

toString in class Object

getProvenance

public com.oracle.labs.mlrg.olcut.provenance.ConfiguredObjectProvenance getProvenance()

Specified by:

getProvenance in interface com.oracle.labs.mlrg.olcut.provenance.Provenancable<com.oracle.labs.mlrg.olcut.provenance.ConfiguredObjectProvenance>