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<?php
/*
* This file is part of the ONGR package.
*
* (c) NFQ Technologies UAB <info@nfq.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace ONGR\ElasticsearchBundle\DSL\Aggregation;
use ONGR\ElasticsearchBundle\DSL\Aggregation\Type\BucketingTrait;
/**
* Class representing ChildrenAggregation.
*/
class ChildrenAggregation extends AbstractAggregation
{
use BucketingTrait;
/**
* @var string
*/
private $children;
/**
* Return children.
*
* @return string
*/
public function getChildren()
{
return $this->children;
}
/**
* Sets children.
*
* @param string $children
*/
public function setChildren($children)
{
$this->children = $children;
}
/**
* {@inheritdoc}
*/
public function getType()
{
return 'children';
}
/**
* {@inheritdoc}
*/
public function getArray()
{
if (count($this->getAggregations()) == 0) {
throw new \LogicException("Children aggregation `{$this->getName()}` has no aggregations added");
}
return ['type' => $this->getChildren()];
}
}