org.tribuo.data.columnar.extractors

Class IdentityExtractor

java.lang.Object

org.tribuo.data.columnar.extractors.SimpleFieldExtractor<String>

org.tribuo.data.columnar.extractors.IdentityExtractor

All Implemented Interfaces:

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

public class IdentityExtractor
extends SimpleFieldExtractor<String>

Extracts the field value and emits it as a String.

Field Summary

Fields inherited from class org.tribuo.data.columnar.extractors.SimpleFieldExtractor

fieldName, metadataName

Constructor Summary

Constructors

Constructor and Description
IdentityExtractor(String fieldName) Extracts the String value from the supplied field.
IdentityExtractor(String fieldName, String metadataName) Extracts the String value from the supplied field.

Method Summary

Modifier and Type	Method and Description
protected Optional<String>	extractField(String value) Extracts the field value, or returns Optional.empty() if it failed to parse.
com.oracle.labs.mlrg.olcut.provenance.ConfiguredObjectProvenance	getProvenance()
Class<String>	getValueType() Gets the class of the value produced by this extractor.

Methods inherited from class org.tribuo.data.columnar.extractors.SimpleFieldExtractor

extract, getFieldName, getMetadataName, postConfig, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

IdentityExtractor

public IdentityExtractor(String fieldName)

Extracts the String value from the supplied field. Writes the metadata out using the field name as the key.

Parameters:

fieldName - The field name to inspect.

IdentityExtractor

public IdentityExtractor(String fieldName,
                         String metadataName)

Extracts the String value from the supplied field. Writes the metadata out using the metadataName as the key.

Parameters:

fieldName - The field name to inspect.

metadataName - The metadata name to emit.

Method Detail

getValueType

public Class<String> getValueType()

Description copied from interface: FieldExtractor

Gets the class of the value produced by this extractor.

Returns:

The class of the value.

extractField

protected Optional<String> extractField(String value)

Description copied from class: SimpleFieldExtractor

Extracts the field value, or returns Optional.empty() if it failed to parse.

Specified by:

extractField in class SimpleFieldExtractor<String>

Parameters:

value - The field value to read.

Returns:

The extracted value.

getProvenance

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