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| 1 | <?php |
| 2 | |
| 3 | namespace CirrusSearch\Search\Rescore; |
| 4 | |
| 5 | use CirrusSearch\OtherIndexesUpdater; |
| 6 | use CirrusSearch\SearchConfig; |
| 7 | use CirrusSearch\Util; |
| 8 | use Elastica\Query\FunctionScore; |
| 9 | |
| 10 | /** |
| 11 | * Builds a set of functions with boosted templates |
| 12 | * Uses a weight function with a filter for each template. |
| 13 | * The list of boosted templates is read from SearchContext |
| 14 | */ |
| 15 | class BoostTemplatesFunctionScoreBuilder extends FunctionScoreBuilder { |
| 16 | |
| 17 | /** |
| 18 | * @var BoostedQueriesFunction |
| 19 | */ |
| 20 | private $boostedQueries; |
| 21 | |
| 22 | /** |
| 23 | * @param SearchConfig $config |
| 24 | * @param int[]|null $requestedNamespaces |
| 25 | * @param bool $localSearch |
| 26 | * @param bool $withDefaultBoosts false to disable the use of default boost templates |
| 27 | * @param float $weight |
| 28 | */ |
| 29 | public function __construct( SearchConfig $config, $requestedNamespaces, $localSearch, $withDefaultBoosts, $weight ) { |
| 30 | parent::__construct( $config, $weight ); |
| 31 | // Use the boosted templates from extra indexes if available |
| 32 | $queries = []; |
| 33 | $weights = []; |
| 34 | if ( $withDefaultBoosts ) { |
| 35 | $boostTemplates = Util::getDefaultBoostTemplates( $config ); |
| 36 | if ( $boostTemplates ) { |
| 37 | foreach ( $boostTemplates as $name => $boostWeight ) { |
| 38 | $match = new \Elastica\Query\MatchQuery(); |
| 39 | $match->setFieldQuery( 'template', $name ); |
| 40 | $weights[] = $boostWeight * $this->weight; |
| 41 | $queries[] = $match; |
| 42 | } |
| 43 | } |
| 44 | } |
| 45 | |
| 46 | $otherIndices = []; |
| 47 | if ( $requestedNamespaces && !$localSearch ) { |
| 48 | $otherIndices = OtherIndexesUpdater::getExtraIndexesForNamespaces( |
| 49 | $config, |
| 50 | $requestedNamespaces |
| 51 | ); |
| 52 | } |
| 53 | |
| 54 | $extraIndexBoostTemplates = []; |
| 55 | foreach ( $otherIndices as $extraIndex ) { |
| 56 | [ $wiki, $boostTemplates ] = $extraIndex->getBoosts(); |
| 57 | if ( $boostTemplates ) { |
| 58 | $extraIndexBoostTemplates[$wiki] = $boostTemplates; |
| 59 | } |
| 60 | } |
| 61 | |
| 62 | foreach ( $extraIndexBoostTemplates as $wiki => $boostTemplates ) { |
| 63 | foreach ( $boostTemplates as $name => $boostWeight ) { |
| 64 | $bool = new \Elastica\Query\BoolQuery(); |
| 65 | $bool->addMust( ( new \Elastica\Query\MatchQuery() )->setFieldQuery( 'wiki', $wiki ) ); |
| 66 | $bool->addMust( ( new \Elastica\Query\MatchQuery() )->setFieldQuery( 'template', |
| 67 | $name ) ); |
| 68 | $weights[] = $boostWeight * $this->weight; |
| 69 | $queries[] = $bool; |
| 70 | } |
| 71 | } |
| 72 | $this->boostedQueries = new BoostedQueriesFunction( $queries, $weights ); |
| 73 | } |
| 74 | |
| 75 | public function append( FunctionScore $functionScore ) { |
| 76 | $this->boostedQueries->append( $functionScore ); |
| 77 | } |
| 78 | } |