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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) 2025 (original work) Open Assessment Technologies SA; |
19 | */ |
20 | |
21 | declare(strict_types=1); |
22 | |
23 | namespace oat\tao\model\metadata\reader; |
24 | |
25 | use oat\generis\model\data\Ontology; |
26 | use oat\tao\model\metadata\exception\MetadataNotExist; |
27 | |
28 | class ResourceMetadataService |
29 | { |
30 | private Ontology $ontology; |
31 | |
32 | public function __construct(Ontology $ontology) |
33 | { |
34 | $this->ontology = $ontology; |
35 | } |
36 | |
37 | public function getResourceMetadataValue(string $resourceUri, string $metadataUri): string |
38 | { |
39 | $resource = $this->ontology->getResource($resourceUri); |
40 | $property = $this->ontology->getProperty($metadataUri); |
41 | |
42 | if (!($resource->exists() && $property->exists())) { |
43 | throw new MetadataNotExist('Resource or property does not exist'); |
44 | } |
45 | |
46 | return (string) $resource->getOnePropertyValue($property) ?? ''; |
47 | } |
48 | } |