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2 |
1 | <?php |
2 | |
3 | namespace CirrusSearch\Wikimedia; |
4 | |
5 | use CirrusSearch\Search\CirrusIndexField; |
6 | use SearchEngine; |
7 | use SearchIndexFieldDefinition; |
8 | |
9 | /** |
10 | * Field definitions for the (Wikimedia-specific) weighted_tags search feature. |
11 | * @package CirrusSearch\Wikimedia |
12 | * @see WeightedTagsHooks |
13 | */ |
14 | class WeightedTags extends SearchIndexFieldDefinition { |
15 | /** |
16 | * @var string |
17 | */ |
18 | private $indexAnalyzer; |
19 | /** |
20 | * @var string |
21 | */ |
22 | private $searchAnalyzer; |
23 | /** |
24 | * @var string |
25 | */ |
26 | private $similarity; |
27 | |
28 | /** |
29 | * @param string $name name of the field |
30 | * @param string $type type of the field |
31 | * @param string $indexAnalyzer |
32 | * @param string $searchAnalyzer |
33 | * @param string $similarity similiraty name to use |
34 | */ |
35 | public function __construct( |
36 | $name, |
37 | $type, |
38 | string $indexAnalyzer, |
39 | string $searchAnalyzer, |
40 | string $similarity |
41 | ) { |
42 | parent::__construct( $name, $type ); |
43 | $this->indexAnalyzer = $indexAnalyzer; |
44 | $this->searchAnalyzer = $searchAnalyzer; |
45 | $this->similarity = $similarity; |
46 | } |
47 | |
48 | /** |
49 | * @param SearchEngine $engine the search engine requesting this mapping |
50 | * @return array the elasticsearch mapping for this field |
51 | */ |
52 | public function getMapping( SearchEngine $engine ) { |
53 | return [ |
54 | 'type' => 'text', |
55 | 'analyzer' => $this->indexAnalyzer, |
56 | 'search_analyzer' => $this->searchAnalyzer, |
57 | 'index_options' => 'freqs', |
58 | 'norms' => false, |
59 | 'similarity' => $this->similarity, |
60 | ]; |
61 | } |
62 | |
63 | /** |
64 | * @inheritDoc |
65 | */ |
66 | public function getEngineHints( SearchEngine $engine ) { |
67 | // see https://github.com/wikimedia/search-extra/blob/master/docs/super_detect_noop.md |
68 | return [ CirrusIndexField::NOOP_HINT => CirrusIndexField::MULTILIST_HANDLER ]; |
69 | } |
70 | } |