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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) 2024 (original work) Open Assessment Technologies SA; |
| 19 | */ |
| 20 | |
| 21 | declare(strict_types=1); |
| 22 | |
| 23 | namespace oat\taoQtiItem\model\metadata; |
| 24 | |
| 25 | use core_kernel_classes_Resource as Resource; |
| 26 | use core_kernel_classes_Triple as Triple; |
| 27 | use oat\generis\model\data\Ontology; |
| 28 | use oat\generis\model\OntologyRdf; |
| 29 | use oat\generis\model\OntologyRdfs; |
| 30 | use oat\taoItems\model\TaoItemOntology; |
| 31 | |
| 32 | class ResourceMetadataRetriever |
| 33 | { |
| 34 | private const IGNORED_PROPERTIES = [ |
| 35 | TaoItemOntology::PROPERTY_ITEM_CONTENT, |
| 36 | TaoItemOntology::PROPERTY_ITEM_MODEL, |
| 37 | OntologyRdf::RDF_TYPE, |
| 38 | OntologyRdfs::RDFS_LABEL |
| 39 | ]; |
| 40 | private Ontology $ontology; |
| 41 | |
| 42 | public function __construct(Ontology $ontology) |
| 43 | { |
| 44 | $this->ontology = $ontology; |
| 45 | } |
| 46 | |
| 47 | /** |
| 48 | * Will retrieve properties and their values for a given resource |
| 49 | */ |
| 50 | public function getProperties(Resource $resource): array |
| 51 | { |
| 52 | $properties = []; |
| 53 | |
| 54 | /** @var Triple $triple */ |
| 55 | foreach ($resource->getRdfTriples() as $triple) { |
| 56 | if (in_array($triple->predicate, self::IGNORED_PROPERTIES)) { |
| 57 | continue; |
| 58 | } |
| 59 | |
| 60 | $property = $this->ontology->getProperty($triple->predicate); |
| 61 | |
| 62 | if ($property->isProperty() !== true) { |
| 63 | continue; |
| 64 | } |
| 65 | |
| 66 | $properties[$property->getLabel()] = $this->getPropertyValues($resource->getPropertyValues($property)); |
| 67 | } |
| 68 | |
| 69 | return $properties; |
| 70 | } |
| 71 | |
| 72 | private function getPropertyValues(array $propertyValues): array |
| 73 | { |
| 74 | $values = []; |
| 75 | foreach ($propertyValues as $propertyValue) { |
| 76 | $values[] = $this->ontology->getResource($propertyValue)->exists() |
| 77 | ? $this->ontology->getResource($propertyValue)->getLabel() |
| 78 | : $propertyValue; |
| 79 | } |
| 80 | return $values; |
| 81 | } |
| 82 | } |