/**
* Loads all classes and properties but does not link them.
*
* @param $ontology The ontology instance
* @param $pageNode The page node of the configuration page
*/
private function createClasses($ontology, $pageNode)
{
// PHP keeps going if param type is wrong, but we want an exception
PhpUtil::assertType($ontology, 'dbpedia\\ontology\\Ontology', 'ontology');
PhpUtil::assertType($pageNode, 'dbpedia\\wikiparser\\PageNode', 'page node');
$name = self::getPageName($pageNode);
foreach ($pageNode->getChildren('TemplateNode') as $node) {
$templateName = $node->getTitle()->encoded();
if ($templateName == OntologyClass::TEMPLATE_NAME) {
$ontClass = new OntologyClass($name);
$labelProperty = $node->getProperty("rdfs:label");
if ($labelProperty) {
$ontClass->setLabel($labelProperty->getText());
} else {
$this->logger->warn("Class " . $ontClass->getUri() . " does not define any label.");
}
$ontology->addClass($ontClass);
} else {
if ($templateName == OntologyObjectProperty::TEMPLATE_NAME || $templateName == OntologyDataTypeProperty::TEMPLATE_NAME) {
if ($templateName == OntologyObjectProperty::TEMPLATE_NAME) {
$ontProperty = new OntologyObjectProperty($name);
} else {
$ontProperty = new OntologyDataTypeProperty($name);
}
$labelProperty = $node->getProperty("rdfs:label");
if ($labelProperty) {
$ontProperty->setLabel($labelProperty->getText());
} else {
$this->logger->warn("Property without any label found on page " . $pageName);
}
$typeProperty = $node->getProperty("rdf:type");
if ($typeProperty) {
if ($typeProperty->getText() == 'owl:FunctionalProperty') {
$ontProperty->setFunctional(true);
} else {
$this->logger->warn("Property with an invalid type found on page " . $pageName);
}
}
$ontology->addProperty($ontProperty);
}
}
}
}
private function writeClass(OntologyClass $class, &$output)
{
$output .= "\t<owl:Class rdf:about=\"" . $class->getUri() . "\">\n";
if ($class->getLabel()) {
$output .= "\t\t<rdfs:label xml:lang=\"en\">" . $class->getLabel() . "</rdfs:label>\n";
}
if ($class->getSubClassOf()) {
$output .= "\t\t<rdfs:subClassOf rdf:resource=\"" . $class->getSubClassOf()->getUri() . "\"/>\n";
}
if ($class->getEquivalentClass()) {
$output .= "\t\t<owl:equivalentClass rdf:resource=\"" . $class->getEquivalentClass()->getUri() . "\"/>\n";
}
$output .= "\t</owl:Class>\n\n";
}