/**
* transform
*
* @param KVDthes_Term $thes
* @return EasyRdf_Resource
*/
public function transform(KVDthes_Term $thes)
{
if ($thes->isNull()) {
throw new InvalidArgumentException('Een nullobject kan niet geserialiseerd worden!');
}
if ($thes->getType()->getId() != 'HR') {
throw new InvalidArgumentException('Om een thesaurus te kunnen serialiseren hebben we de HR term nodig.');
}
$term = $thes;
$thes = $term->getThesaurus();
$type = 'skos:ConceptScheme';
try {
$uri = $this->genThesaurusUri($thes);
$res = $this->graph->resource($uri, $type);
} catch (InvalidArgumentException $e) {
$res = $this->graph->newBNode($type);
}
$res->add('skos:prefLabel', $thes->getNaam());
$res->add('dc:title', $thes->getNaam());
$res->add('dc:language', $thes->getLanguage());
if ($term->hasNTRelations()) {
$term->sortRelations(KVDthes_TermSorter::SORT_ID);
$rels = $term->getNarrowerTerms();
foreach ($rels as $rel) {
$tt = $this->graph->resource($this->genTermUri($rel));
$res->add('skos:hasTopConcept', $tt);
}
}
return $res;
}
/**
* setBroaderTerm
*
* @since 10 apr 2009
* @param KVDthes_Term $term
* @return void
*/
public function setBroaderTerm(KVDthes_Term $term)
{
if (!$this->isPreferredTerm() && !$term->isNull()) {
throw new LogicException('You are trying to set a Broader Term for a term which is not a preferred term.');
}
$this->checkRelations();
$it = $this->relations->getBTIterator();
$it->rewind();
if ($it->valid()) {
$current = $it->current();
$this->removeRelation($current);
}
// Indien de term een NullObject is wissen we de bestaande BT relation maar vervangen we die niet door iets nieuws.
if (!$term->isNull()) {
$this->addRelation(new KVDthes_Relation(KVDthes_Relation::REL_BT, $term));
}
$this->markDirty();
}
public function testIsNull()
{
$this->assertFalse($this->object->isNull());
$niets = KVDthes_TestTerm::newNull();
$this->assertTrue($niets->isNull());
}
