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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) 2014 (original work) Open Assessment Technologies SA; |
| 19 | * |
| 20 | * |
| 21 | */ |
| 22 | |
| 23 | namespace oat\generis\model\kernel\persistence\file; |
| 24 | |
| 25 | use EasyRdf\Graph; |
| 26 | use core_kernel_classes_Triple; |
| 27 | use IteratorAggregate; |
| 28 | use ArrayIterator; |
| 29 | |
| 30 | class FileIterator implements IteratorAggregate |
| 31 | { |
| 32 | private $triples = []; |
| 33 | |
| 34 | /** |
| 35 | * @param string $file |
| 36 | * @param string|null $forceModelId |
| 37 | * |
| 38 | * @throws \common_exception_Error |
| 39 | */ |
| 40 | public function __construct(string $file, string $forceModelId = null) |
| 41 | { |
| 42 | $modelId = is_null($forceModelId) ? FileModel::getModelIdFromXml($file) : $forceModelId; |
| 43 | $this->load($modelId, $file); |
| 44 | } |
| 45 | |
| 46 | /** |
| 47 | * @see IteratorAggregate::getIterator() |
| 48 | */ |
| 49 | public function getIterator(): ArrayIterator |
| 50 | { |
| 51 | return new ArrayIterator($this->triples); |
| 52 | } |
| 53 | |
| 54 | /** |
| 55 | * load triples from rdf file |
| 56 | * |
| 57 | * @param string $modelId |
| 58 | * @param string $file |
| 59 | */ |
| 60 | protected function load($modelId, $file) |
| 61 | { |
| 62 | $easyRdf = new Graph(); |
| 63 | $easyRdf->parseFile($file); |
| 64 | |
| 65 | foreach ($easyRdf->toRdfPhp() as $subject => $propertiesValues) { |
| 66 | foreach ($propertiesValues as $predicate => $values) { |
| 67 | foreach ($values as $v) { |
| 68 | $triple = new core_kernel_classes_Triple(); |
| 69 | $triple->modelid = $modelId; |
| 70 | $triple->subject = $subject; |
| 71 | $triple->predicate = $predicate; |
| 72 | $triple->object = $v['value']; |
| 73 | $triple->lg = $v['lang'] ?? null; |
| 74 | $this->triples[] = $triple; |
| 75 | } |
| 76 | } |
| 77 | } |
| 78 | } |
| 79 | } |