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1 |
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 | } |