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1 | <?php |
2 | |
3 | /** |
4 | * Related Records: WorldCat-based similarity |
5 | * |
6 | * PHP version 8 |
7 | * |
8 | * Copyright (C) Villanova University 2009, 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 Related_Records |
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/wiki/development:plugins:related_records_modules Wiki |
28 | */ |
29 | |
30 | namespace VuFind\Related; |
31 | |
32 | use VuFindSearch\Command\SearchCommand; |
33 | |
34 | /** |
35 | * Related Records: WorldCat-based similarity |
36 | * |
37 | * @category VuFind |
38 | * @package Related_Records |
39 | * @author Demian Katz <demian.katz@villanova.edu> |
40 | * @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License |
41 | * @link https://vufind.org/wiki/development:plugins:related_records_modules Wiki |
42 | */ |
43 | class WorldCatSimilar extends Similar |
44 | { |
45 | /** |
46 | * Establishes base settings for making recommendations. |
47 | * |
48 | * @param string $settings Settings from config.ini |
49 | * @param \VuFind\RecordDriver\AbstractBase $driver Record driver object |
50 | * |
51 | * @return void |
52 | */ |
53 | public function init($settings, $driver) |
54 | { |
55 | // Create array of query parts: |
56 | $parts = []; |
57 | |
58 | // Add Dewey class to query |
59 | $deweyClass = $driver->tryMethod('getDeweyCallNumber'); |
60 | if (!empty($deweyClass)) { |
61 | // Skip "English Fiction" Dewey class -- this won't give us useful |
62 | // matches because there's too much of it and it's too broad. |
63 | if (!str_starts_with($deweyClass, '823')) { |
64 | $parts[] = 'srw.dd any "' . $deweyClass . '"'; |
65 | } |
66 | } |
67 | |
68 | // Add author to query |
69 | $author = $driver->getPrimaryAuthor(); |
70 | if (!empty($author)) { |
71 | $parts[] = 'srw.au all "' . $author . '"'; |
72 | } |
73 | |
74 | // Add subjects to query |
75 | $subjects = $driver->getAllSubjectHeadings(); |
76 | foreach ($subjects as $current) { |
77 | $parts[] = 'srw.su all "' . implode(' ', $current) . '"'; |
78 | } |
79 | |
80 | // Add title to query |
81 | $title = $driver->getTitle(); |
82 | if (!empty($title)) { |
83 | $parts[] = 'srw.ti any "' . str_replace('"', '', $title) . '"'; |
84 | } |
85 | |
86 | // Build basic query: |
87 | $query = '(' . implode(' or ', $parts) . ')'; |
88 | |
89 | // Not current record ID if this is already a WorldCat record: |
90 | if ($driver->getSourceIdentifier() == 'WorldCat') { |
91 | $id = $driver->getUniqueId(); |
92 | $query .= " not srw.no all \"$id\""; |
93 | } |
94 | |
95 | // Perform the search and save results: |
96 | $queryObj = new \VuFindSearch\Query\Query($query); |
97 | $command = new SearchCommand('WorldCat', $queryObj, 0, 5); |
98 | $result = $this->searchService->invoke($command)->getResult(); |
99 | $this->results = $result->getRecords(); |
100 | } |
101 | } |