public static function geefEersteResultaatSubject($predicate, $object)
{
$query = 'SELECT ?subject WHERE {?subject % %}';
$connectie = new SPARQLConnection();
$result = $connectie->escapedQuery($query, array($predicate, $object));
return $result['results']['bindings'][0]['subject']['value'];
}
/**
* Bepaalt of een context-uri niet toebehoort aan (sub)practice.
*/
static function isHoofdcontextVanPractice($context_uri)
{
$query = "DESCRIBE ?s ?o WHERE {\n\t\t\t?s property:Selection_link % .\n\t\t\t?s property:Practice_back_link ?o\n\t\t\t}";
$connectie = new SPARQLConnection();
$result = $connectie->escapedQuery($query, array($context_uri));
if (empty($result['@graph'])) {
return false;
} else {
return true;
}
}
