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| <?php | |
| namespace Wikibase\Lexeme\Search\Elastic; | |
| use CirrusSearch\CirrusSearch; | |
| use SearchEngine; | |
| use Wikibase\DataModel\Entity\EntityDocument; | |
| use Wikibase\Lexeme\Domain\Model\Lexeme; | |
| use Wikibase\Search\Elastic\Fields\TermIndexField; | |
| /** | |
| * Field implementing Lexeme's lemma | |
| */ | |
| class LemmaField extends TermIndexField { | |
| public const NAME = 'lemma'; | |
| public function __construct() { | |
| parent::__construct( static::NAME, \SearchIndexField::INDEX_TYPE_TEXT ); | |
| } | |
| /** | |
| * @param SearchEngine $engine | |
| * | |
| * @return array | |
| */ | |
| public function getMapping( SearchEngine $engine ) { | |
| // Since we need a specially tuned field, we can not use | |
| // standard search engine types. | |
| if ( !( $engine instanceof CirrusSearch ) ) { | |
| // For now only Cirrus/Elastic is supported | |
| return []; | |
| } | |
| $config = $this->getUnindexedField(); | |
| $config['fields']['prefix'] = | |
| $this->getSubfield( 'prefix_asciifolding', 'near_match_asciifolding' ); | |
| $config['fields']['near_match'] = $this->getSubfield( 'near_match' ); | |
| $config['fields']['near_match_folded'] = $this->getSubfield( 'near_match_asciifolding' ); | |
| // TODO: we don't seem to be using this, check if we need it? | |
| $config['copy_to'] = 'labels_all'; | |
| return $config; | |
| } | |
| /** | |
| * @param EntityDocument $entity | |
| * | |
| * @return mixed Get the value of the field to be indexed when a page/document | |
| * is indexed. This might be an array with nested data, if the field | |
| * is defined with nested type or an int or string for simple field types. | |
| */ | |
| public function getFieldData( EntityDocument $entity ) { | |
| if ( !( $entity instanceof Lexeme ) ) { | |
| return []; | |
| } | |
| /** | |
| * @var Lexeme $entity | |
| */ | |
| return array_values( $entity->getLemmas()->toTextArray() ); | |
| } | |
| } |