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1 | <?php |
2 | |
3 | /** |
4 | * Solr record fallback loader |
5 | * |
6 | * PHP version 8 |
7 | * |
8 | * Copyright (C) Villanova University 2022. |
9 | * |
10 | * This program is free software; you can redistribute it and/or modify |
11 | * it under the terms of the GNU General Public License version 2, |
12 | * as published by the Free Software Foundation. |
13 | * |
14 | * This program is distributed in the hope that it will be useful, |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
17 | * GNU General Public License for more details. |
18 | * |
19 | * You should have received a copy of the GNU General Public License |
20 | * along with this program; if not, write to the Free Software |
21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
22 | * |
23 | * @category VuFind |
24 | * @package Record |
25 | * @author Demian Katz <demian.katz@villanova.edu> |
26 | * @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License |
27 | * @link https://vufind.org Main Site |
28 | */ |
29 | |
30 | namespace VuFind\Record\FallbackLoader; |
31 | |
32 | use VuFind\Db\Service\ResourceServiceInterface; |
33 | use VuFind\Record\RecordIdUpdater; |
34 | use VuFindSearch\Command\SearchCommand; |
35 | use VuFindSearch\Service; |
36 | |
37 | /** |
38 | * Solr record fallback loader |
39 | * |
40 | * @category VuFind |
41 | * @package Record |
42 | * @author Demian Katz <demian.katz@villanova.edu> |
43 | * @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License |
44 | * @link https://vufind.org Main Site |
45 | */ |
46 | class Solr extends AbstractFallbackLoader |
47 | { |
48 | /** |
49 | * Record source |
50 | * |
51 | * @var string |
52 | */ |
53 | protected $source = 'Solr'; |
54 | |
55 | /** |
56 | * Constructor |
57 | * |
58 | * @param ResourceServiceInterface $resourceService Resource database service |
59 | * @param RecordIdUpdater $recordIdUpdater Record ID updater service |
60 | * @param Service $searchService Search service |
61 | * @param ?string $legacyIdField Solr field containing legacy IDs (null to |
62 | * disable lookups) |
63 | */ |
64 | public function __construct( |
65 | ResourceServiceInterface $resourceService, |
66 | RecordIdUpdater $recordIdUpdater, |
67 | Service $searchService, |
68 | protected ?string $legacyIdField = 'previous_id_str_mv' |
69 | ) { |
70 | parent::__construct($resourceService, $recordIdUpdater, $searchService); |
71 | } |
72 | |
73 | /** |
74 | * Fetch a single record (null if not found). |
75 | * |
76 | * @param string $id ID to load |
77 | * |
78 | * @return \VuFindSearch\Response\RecordCollectionInterface |
79 | */ |
80 | protected function fetchSingleRecord($id) |
81 | { |
82 | // If there is no legacy ID field defined, short circuit the lookup: |
83 | if (null === $this->legacyIdField) { |
84 | return new \VuFindSearch\Backend\Solr\Response\Json\RecordCollection( |
85 | ['recordCount' => 0] |
86 | ); |
87 | } |
88 | $query = new \VuFindSearch\Query\Query( |
89 | $this->legacyIdField . ':"' . addcslashes($id, '"') . '"' |
90 | ); |
91 | $command = new SearchCommand('Solr', $query); |
92 | return $this->searchService->invoke($command)->getResult(); |
93 | } |
94 | } |