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1
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) 2021 (original work) Open Assessment Technologies SA;
19 */
20
21declare(strict_types=1);
22
23namespace oat\tao\model\Lists\Business\Service;
24
25use oat\generis\model\OntologyAwareTrait;
26use oat\oatbox\service\ConfigurableService;
27use oat\tao\model\Lists\Business\Contract\ClassMetadataSearcherInterface;
28use oat\tao\model\Lists\Business\Domain\ClassCollection;
29use oat\tao\model\Lists\Business\Input\ClassMetadataSearchInput;
30use Throwable;
31
32class ClassMetadataSearcherProxy extends ConfigurableService implements ClassMetadataSearcherInterface
33{
34    use OntologyAwareTrait;
35
36    public const SERVICE_ID = 'tao/ClassMetadataSearcherProxy';
37    public const OPTION_ACTIVE_SEARCHER = 'activeSearcher';
38
39    public function findAll(ClassMetadataSearchInput $input): ClassCollection
40    {
41        $activeSearcherId = $this->getOption(self::OPTION_ACTIVE_SEARCHER, ClassMetadataService::SERVICE_ID);
42
43        try {
44            /** @var ClassMetadataSearcherInterface $searcher */
45            $searcher = $this->getServiceLocator()->get($activeSearcherId);
46
47            return $searcher->findAll($input);
48        } catch (Throwable $exception) {
49            $this->logCritical(
50                sprintf(
51                    'Impossible to perform class metadata search with %s: %s',
52                    $activeSearcherId,
53                    $exception->getMessage()
54                )
55            );
56
57            if ($activeSearcherId !== ClassMetadataService::SERVICE_ID) {
58                return $this->getClassMetadataSearcher()->findAll($input);
59            }
60        }
61
62        return new ClassCollection(...[]);
63    }
64
65    private function getClassMetadataSearcher(): ClassMetadataSearcherInterface
66    {
67        return $this->getServiceLocator()->get(ClassMetadataService::SERVICE_ID);
68    }
69}