Package org.wikidata.wdtk.rdf

Class ReferenceRdfConverter

java.lang.Object

org.wikidata.wdtk.rdf.ReferenceRdfConverter

public class ReferenceRdfConverter
extends Object

This class supports the conversion of references to RDF. It buffers references to avoid duplicates and to allow reference triples to be serialized separately (for more efficient encodings in syntaxes like Turtle or RDF/XML).

Author:

Markus Kroetzsch

Constructor Summary

Constructors

Constructor	Description
ReferenceRdfConverter(RdfWriter rdfWriter, SnakRdfConverter snakRdfConverter, String siteUri)	Constructor.

Method Summary

Modifier and Type	Method	Description
org.eclipse.rdf4j.model.Resource	addReference(Reference reference)	Adds the given reference to the list of references that should still be serialized, and returns the RDF resource that will be used as a subject.
void	writeReferences()	Writes references that have been added recently.

Methods inherited from class java.lang.Object

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

Constructor Details

ReferenceRdfConverter

public ReferenceRdfConverter(RdfWriter rdfWriter,
 SnakRdfConverter snakRdfConverter,
 String siteUri)

Constructor.

Parameters:

rdfWriter - object to use for constructing URI objects

snakRdfConverter - object to use for writing snaks

siteUri - URI prefix that is used by the processed site

Method Details

addReference

public org.eclipse.rdf4j.model.Resource addReference(Reference reference)

Adds the given reference to the list of references that should still be serialized, and returns the RDF resource that will be used as a subject.

Parameters:

reference - the reference to be serialized

Returns:

RDF resource that represents this reference

writeReferences

public void writeReferences()
                     throws org.eclipse.rdf4j.rio.RDFHandlerException

Writes references that have been added recently. Auxiliary triples that are generated for serializing snaks in references will be written right afterwards. This will also trigger any other auxiliary triples to be written that the snak converter object may have buffered.

Throws:

org.eclipse.rdf4j.rio.RDFHandlerException - if there was a problem writing the restrictions