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| 1 | <?php |
| 2 | namespace Wikibase\Search\Elastic; |
| 3 | |
| 4 | use CirrusSearch\Maintenance\AnalysisConfigBuilder; |
| 5 | use MediaWiki\Config\Config; |
| 6 | |
| 7 | /** |
| 8 | * Utility class to build analyzer configs for ElasticSearch |
| 9 | */ |
| 10 | class ConfigBuilder { |
| 11 | |
| 12 | /** |
| 13 | * @var AnalysisConfigBuilder |
| 14 | */ |
| 15 | private $builder; |
| 16 | /** |
| 17 | * @var string[] |
| 18 | */ |
| 19 | private $languageList; |
| 20 | /** |
| 21 | * @var Config |
| 22 | */ |
| 23 | private $searchSettings; |
| 24 | |
| 25 | /** |
| 26 | * @param string[] $languageList |
| 27 | * @param Config $searchSettings |
| 28 | * @param AnalysisConfigBuilder $builder |
| 29 | */ |
| 30 | public function __construct( array $languageList, Config $searchSettings, AnalysisConfigBuilder $builder ) { |
| 31 | $this->builder = $builder; |
| 32 | $this->languageList = $languageList; |
| 33 | $this->searchSettings = $searchSettings; |
| 34 | } |
| 35 | |
| 36 | /** |
| 37 | * Build a new all-language analyzer configuration. |
| 38 | * This adds analyzers, filters, etc. which are required for language-specific |
| 39 | * indexing of Wikidata fields. |
| 40 | * @param array[] &$config Existing config which will be modified with new analyzers |
| 41 | */ |
| 42 | public function buildConfig( array &$config ) { |
| 43 | $stemmingSettings = $this->searchSettings->get( 'UseStemming' ); |
| 44 | |
| 45 | $stemmedLanguages = array_filter( $this->languageList, |
| 46 | static function ( $lang ) use ( $stemmingSettings ) { |
| 47 | return !empty( $stemmingSettings[$lang]['index'] ); |
| 48 | } |
| 49 | ); |
| 50 | $nonStemmedLanguages = array_diff( $this->languageList, $stemmedLanguages ); |
| 51 | $this->builder->buildLanguageConfigs( $config, $stemmedLanguages, |
| 52 | [ 'plain', 'plain_search', 'text', 'text_search' ] ); |
| 53 | $this->builder->buildLanguageConfigs( $config, $nonStemmedLanguages, |
| 54 | [ 'plain', 'plain_search' ] ); |
| 55 | } |
| 56 | |
| 57 | } |