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1 | <?php |
2 | |
3 | /** |
4 | * EDS Autocomplete Module |
5 | * |
6 | * PHP version 8 |
7 | * |
8 | * Copyright (C) Villanova University 2018. |
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 Autocomplete |
25 | * @author Demian Katz <demian.katz@villanova.edu> |
26 | * @author Chris Hallberg <challber@villanova.edu> |
27 | * @author Jochen Lienhard <jochen.lienhard@ub.uni-freiburg.de> |
28 | * @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License |
29 | * @link https://vufind.org/wiki/development:plugins:autosuggesters Wiki |
30 | */ |
31 | |
32 | namespace VuFind\Autocomplete; |
33 | |
34 | use VuFindSearch\Service; |
35 | |
36 | use function is_array; |
37 | |
38 | /** |
39 | * EDS Autocomplete Module |
40 | * |
41 | * This class provides popular terms provided by EDS. |
42 | * |
43 | * @category VuFind |
44 | * @package Autocomplete |
45 | * @author Demian Katz <demian.katz@villanova.edu> |
46 | * @author Jochen Lienhard <jochen.lienhard@ub.uni-freiburg.de> |
47 | * @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License |
48 | * @link https://vufind.org/wiki/development:plugins:autosuggesters Wiki |
49 | */ |
50 | class Eds implements AutocompleteInterface |
51 | { |
52 | /** |
53 | * Eds domain |
54 | * |
55 | * @var string |
56 | */ |
57 | protected $domain = 'rawqueries'; |
58 | |
59 | /** |
60 | * Search object family to use |
61 | * |
62 | * @var string |
63 | */ |
64 | protected $searchClassId = 'EDS'; |
65 | |
66 | /** |
67 | * Search service |
68 | * |
69 | * @var Service |
70 | */ |
71 | protected $searchService; |
72 | |
73 | /** |
74 | * Constructor |
75 | * |
76 | * @param Service $ss Search service |
77 | */ |
78 | public function __construct(Service $ss) |
79 | { |
80 | $this->searchService = $ss; |
81 | } |
82 | |
83 | /** |
84 | * This method returns an array of strings matching the user's query for |
85 | * display in the autocomplete box. |
86 | * |
87 | * @param string $query The user query |
88 | * |
89 | * @return array The suggestions for the provided query |
90 | */ |
91 | public function getSuggestions($query) |
92 | { |
93 | $results = null; |
94 | try { |
95 | // Perform the autocomplete search: |
96 | $command = new \VuFindSearch\Backend\EDS\Command\AutocompleteCommand( |
97 | $this->searchClassId, |
98 | $query, |
99 | $this->domain |
100 | ); |
101 | $results = $this->searchService->invoke($command)->getResult(); |
102 | } catch (\Exception $e) { |
103 | // Ignore errors -- just return empty results if we must. |
104 | } |
105 | return is_array($results) ? array_unique($results) : []; |
106 | } |
107 | |
108 | /** |
109 | * Set parameters that affect the behavior of the autocomplete handler. |
110 | * These values normally come from the EDS configuration file. |
111 | * |
112 | * @param string $params Parameters to set |
113 | * |
114 | * @return void |
115 | */ |
116 | public function setConfig($params) |
117 | { |
118 | // Only change the value if it is not empty: |
119 | $this->domain = !empty($params) ? $params : $this->domain; |
120 | } |
121 | } |