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| <?php | |
| namespace CirrusSearch\Search; | |
| use Elastica\ResultSet as ElasticaResultSet; | |
| /** | |
| * Result type for aggregations. | |
| */ | |
| class SingleAggResultsType implements ResultsType { | |
| /** @var string Name of aggregation */ | |
| private $name; | |
| /** @param string $name Name of aggregation to return */ | |
| public function __construct( $name ) { | |
| $this->name = $name; | |
| } | |
| /** | |
| * @return false|string|array corresponding to Elasticsearch source filtering syntax | |
| */ | |
| public function getSourceFiltering() { | |
| return false; | |
| } | |
| public function getStoredFields() { | |
| return []; | |
| } | |
| public function getHighlightingConfiguration( array $extraHighlightFields ) { | |
| return null; | |
| } | |
| /** | |
| * @param ElasticaResultSet $resultSet | |
| * @return mixed|null Type depends on the aggregation performed. For | |
| * a sum this will return an integer. | |
| */ | |
| public function transformElasticsearchResult( ElasticaResultSet $resultSet ) { | |
| $aggs = $resultSet->getAggregations(); | |
| if ( isset( $aggs[$this->name] ) ) { | |
| return $aggs[$this->name]['value']; | |
| } | |
| return $this->createEmptyResult(); | |
| } | |
| /** | |
| * @return null | |
| */ | |
| public function createEmptyResult() { | |
| return null; | |
| } | |
| } |