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<?php
declare(strict_types=1);
namespace Level23\Druid\Extractions;
class CascadeExtraction implements ExtractionInterface
{
/**
* @var array|\Level23\Druid\Extractions\ExtractionInterface[]
*/
protected $extractions = [];
* CascadeExtraction constructor.
*
* @param \Level23\Druid\Extractions\ExtractionInterface ...$extractions
public function __construct(...$extractions)
$this->extractions = $extractions;
}
* Add an extraction function to our list of functions to apply.
* @param \Level23\Druid\Extractions\ExtractionInterface $extraction
public function addExtraction(ExtractionInterface $extraction)
$this->extractions[] = $extraction;
* Return the Extraction Function so it can be used in a druid query.
* @return array
public function toArray(): array
return [
'type' => 'cascade',
'extractionFns' => array_map(function (ExtractionInterface $extraction) {
return $extraction->toArray();
}, $this->extractions),
];
level23 /
druid-client
