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| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU General Public License |
| 6 | * as published by the Free Software Foundation; under version 2 |
| 7 | * of the License (non-upgradable). |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write to the Free Software |
| 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 17 | * |
| 18 | * Copyright (c) 2020 (original work) Open Assessment Technologies SA; |
| 19 | * |
| 20 | * |
| 21 | */ |
| 22 | |
| 23 | namespace oat\generis\model\data\import; |
| 24 | |
| 25 | use common_Exception; |
| 26 | use core_kernel_classes_Triple; |
| 27 | use oat\generis\model\OntologyRdf; |
| 28 | use oat\generis\model\OntologyRdfs; |
| 29 | use oat\generis\model\data\Ontology; |
| 30 | use oat\oatbox\event\EventManager; |
| 31 | use oat\generis\model\data\event\ResourceCreated; |
| 32 | use oat\generis\model\kernel\persistence\file\FileIterator; |
| 33 | use oat\oatbox\service\ConfigurableService; |
| 34 | use oat\generis\model\OntologyAwareTrait; |
| 35 | |
| 36 | /** |
| 37 | * Centralised helper to import RDFS models |
| 38 | * through the RDF interface |
| 39 | * @author Joel Bout <joel@taotesting.com> |
| 40 | */ |
| 41 | class RdfImporter extends ConfigurableService |
| 42 | { |
| 43 | use OntologyAwareTrait; |
| 44 | |
| 45 | /** |
| 46 | * Imports an RDF file into the ontology as readonly model |
| 47 | * @param string $filePath |
| 48 | * @throws common_Exception |
| 49 | * @return boolean |
| 50 | */ |
| 51 | public function importFile(string $filePath) |
| 52 | { |
| 53 | if (!file_exists($filePath) || !is_readable($filePath)) { |
| 54 | throw new common_Exception("Unable to load ontology : $filePath"); |
| 55 | } |
| 56 | $this->importTriples(new FileIterator($filePath)); |
| 57 | return true; |
| 58 | } |
| 59 | |
| 60 | /** |
| 61 | * |
| 62 | * @param iterable $triples |
| 63 | * @return void |
| 64 | */ |
| 65 | public function importTriples(iterable $triples) |
| 66 | { |
| 67 | $rdf = $this->getServiceLocator()->get(Ontology::SERVICE_ID)->getRdfInterface(); |
| 68 | $rdf->addTripleCollection($triples); |
| 69 | foreach ($triples as $triple) { |
| 70 | $this->watchResourceCreated($triple); |
| 71 | } |
| 72 | } |
| 73 | |
| 74 | /** |
| 75 | * This will generate a Event if condition is meet |
| 76 | * @param core_kernel_classes_Triple $triple |
| 77 | */ |
| 78 | private function watchResourceCreated(core_kernel_classes_Triple $triple) |
| 79 | { |
| 80 | if ($triple->predicate == OntologyRdfs::RDFS_SUBCLASSOF || $triple->predicate == OntologyRdf::RDF_TYPE) { |
| 81 | /** @var EventManager $eventManager */ |
| 82 | $eventManager = $this->getServiceLocator()->get(EventManager::SERVICE_ID); |
| 83 | $eventManager->trigger(new ResourceCreated($this->getResource($triple->subject))); |
| 84 | } |
| 85 | } |
| 86 | } |