Package de.uni_mannheim.informatik.dws.melt.matching_jena_matchers.util.textExtractors

Class TextExtractorOnlyLabel

java.lang.Object

de.uni_mannheim.informatik.dws.melt.matching_jena_matchers.util.textExtractors.TextExtractorOnlyLabel

All Implemented Interfaces:

TextExtractor

public class TextExtractorOnlyLabel
extends Object
implements TextExtractor

Extracts only one speaking label (language can be set in constructor) which can be (in decreasing importance): skos:prefLabel, rdfs:label, fragment (only if more than 50 percent are not numbers), skos:altLabel, skos:hiddenLabel.

Field Summary

Fields

Modifier and Type	Field	Description
protected String	languageCode

Constructor Summary

Constructors

Constructor	Description
TextExtractorOnlyLabel()
TextExtractorOnlyLabel(String languageCode)

Method Summary

Modifier and Type	Method	Description
Set<String>	extract(org.apache.jena.rdf.model.Resource r)	Given a Jena resource this method extracts textual/string representations from it.
static String	extractFragment(org.apache.jena.rdf.model.Resource r)
String	extractOne(org.apache.jena.rdf.model.Resource r)
protected String	extractProperty(org.apache.jena.rdf.model.Resource r, org.apache.jena.rdf.model.Property p)	Extract literal if language tag fits or (as fallback) literal with no language tag.
protected boolean	langTagMatch(String target)

Methods inherited from class java.lang.Object

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

Field Details

languageCode

protected String languageCode

Constructor Details

TextExtractorOnlyLabel

public TextExtractorOnlyLabel()

TextExtractorOnlyLabel

public TextExtractorOnlyLabel(String languageCode)

Method Details

extract

public Set<String> extract(org.apache.jena.rdf.model.Resource r)

Description copied from interface: TextExtractor

Given a Jena resource this method extracts textual/string representations from it.

Specified by:

extract in interface TextExtractor

Parameters:

r - the jena resource which also allows to traverse the whole rdf graph

Returns:

a set of textual representations of the given resource.

extractOne

public String extractOne(org.apache.jena.rdf.model.Resource r)

extractProperty

protected String extractProperty(org.apache.jena.rdf.model.Resource r,
 org.apache.jena.rdf.model.Property p)

Extract literal if language tag fits or (as fallback) literal with no language tag.

Parameters:

r - the resource

p - the property to analyze

Returns:

the extracted lexical form of the literal or empty string (if no literal matches or is provided).

langTagMatch

protected boolean langTagMatch(String target)

extractFragment

public static String extractFragment(org.apache.jena.rdf.model.Resource r)