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| 1 | <?php |
| 2 | |
| 3 | namespace CirrusSearch\Search; |
| 4 | |
| 5 | use CirrusSearch\CirrusSearch; |
| 6 | use CirrusSearch\SearchConfig; |
| 7 | use SearchEngine; |
| 8 | |
| 9 | /** |
| 10 | * Index field representing the source_text data. |
| 11 | * @package CirrusSearch |
| 12 | */ |
| 13 | class SourceTextIndexField extends TextIndexField { |
| 14 | /** @var bool enable trigram index for accelerated regex query */ |
| 15 | private $withTrigrams; |
| 16 | |
| 17 | public function __construct( $name, $type, SearchConfig $config ) { |
| 18 | parent::__construct( $name, $type, $config ); |
| 19 | |
| 20 | if ( $config->getElement( 'CirrusSearchWikimediaExtraPlugin', 'regex' ) && |
| 21 | in_array( 'build', $config->getElement( 'CirrusSearchWikimediaExtraPlugin', 'regex' ) ) |
| 22 | ) { |
| 23 | $this->withTrigrams = true; |
| 24 | } |
| 25 | } |
| 26 | |
| 27 | /** |
| 28 | * @param SearchEngine $engine |
| 29 | * @return array|void |
| 30 | */ |
| 31 | public function getMapping( SearchEngine $engine ) { |
| 32 | if ( !( $engine instanceof CirrusSearch ) ) { |
| 33 | throw new \LogicException( "Cannot map CirrusSearch fields for another engine." ); |
| 34 | } |
| 35 | $this->initFlags(); |
| 36 | |
| 37 | $field = [ |
| 38 | 'index' => false, // We only use the .plain field |
| 39 | 'type' => 'text', |
| 40 | 'fields' => [ |
| 41 | 'plain' => [ |
| 42 | 'type' => 'text', |
| 43 | 'norms' => false, |
| 44 | 'analyzer' => 'source_text_plain', |
| 45 | 'search_analyzer' => 'source_text_plain_search', |
| 46 | 'position_increment_gap' => self::POSITION_INCREMENT_GAP, |
| 47 | 'similarity' => self::getSimilarity( $this->config, $this->name, 'plain' ), |
| 48 | ], |
| 49 | ] |
| 50 | ]; |
| 51 | |
| 52 | if ( $this->withTrigrams ) { |
| 53 | $field['fields']['trigram'] = [ |
| 54 | 'norms' => false, |
| 55 | 'type' => 'text', |
| 56 | 'analyzer' => 'trigram', |
| 57 | 'index_options' => 'docs', |
| 58 | ]; |
| 59 | } |
| 60 | $this->configureHighlighting( $field, [ 'plain' ], false ); |
| 61 | return $field; |
| 62 | } |
| 63 | } |