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| 1 | <?php |
| 2 | |
| 3 | namespace CirrusSearch\Search\Rescore; |
| 4 | |
| 5 | use CirrusSearch\SearchConfig; |
| 6 | use Elastica\Query\FunctionScore; |
| 7 | |
| 8 | /** |
| 9 | * A function score that builds a script_score. |
| 10 | * see: https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-function-score-query.html#function-script-score |
| 11 | * NOTE: only lucene expression script engine is supported. |
| 12 | */ |
| 13 | class ScriptScoreFunctionScoreBuilder extends FunctionScoreBuilder { |
| 14 | /** |
| 15 | * @var string the script |
| 16 | */ |
| 17 | private $script; |
| 18 | |
| 19 | /** |
| 20 | * @param SearchConfig $config |
| 21 | * @param float $weight |
| 22 | * @param string $script |
| 23 | */ |
| 24 | public function __construct( SearchConfig $config, $weight, $script ) { |
| 25 | parent::__construct( $config, $weight ); |
| 26 | $this->script = $script; |
| 27 | } |
| 28 | |
| 29 | public function append( FunctionScore $functionScore ) { |
| 30 | $functionScore->addScriptScoreFunction( new \Elastica\Script\Script( $this->script, null, |
| 31 | 'expression' ), null, $this->weight ); |
| 32 | } |
| 33 | } |