/**
* Adds the given Statement from the given Entity to the RDF graph.
*
* @param EntityId $entityId
* @param Statement $statement
* @param bool $isBest Is this best ranked statement?
*/
private function addStatement(EntityId $entityId, Statement $statement, $isBest)
{
$statementLName = $this->vocabulary->getStatementLName($statement);
$this->addMainSnak($entityId, $statementLName, $statement, $isBest);
// XXX: separate builder for qualifiers?
if ($this->produceQualifiers) {
// this assumes statement was added by addMainSnak
foreach ($statement->getQualifiers() as $q) {
$this->snakBuilder->addSnak($this->statementWriter, $q, RdfVocabulary::NSP_QUALIFIER);
}
}
// XXX: separate builder for references?
if ($this->produceReferences) {
/** @var Reference $reference */
foreach ($statement->getReferences() as $reference) {
//FIXME: split body into separate method
$hash = $reference->getSnaks()->getHash();
$refLName = $hash;
$this->statementWriter->about(RdfVocabulary::NS_STATEMENT, $statementLName)->say(RdfVocabulary::NS_PROV, 'wasDerivedFrom')->is(RdfVocabulary::NS_REFERENCE, $refLName);
if ($this->dedupeBag->alreadySeen($hash, 'R') !== false) {
continue;
}
$this->referenceWriter->about(RdfVocabulary::NS_REFERENCE, $refLName)->a(RdfVocabulary::NS_ONTOLOGY, 'Reference');
foreach ($reference->getSnaks() as $refSnak) {
$this->snakBuilder->addSnak($this->referenceWriter, $refSnak, RdfVocabulary::NSP_REFERENCE);
}
}
}
}
