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<?php
namespace Elastica\Aggregation;
/**
* Class Histogram.
*
* @link http://www.elastic.co/guide/en/elasticsearch/reference/current/search-aggregations-bucket-histogram-aggregation.html
*/
class Histogram extends AbstractSimpleAggregation
{
/**
* @param string $name the name of this aggregation
* @param string $field the name of the field on which to perform the aggregation
* @param int $interval the interval by which documents will be bucketed
*/
public function __construct($name, $field, $interval)
{
parent::__construct($name);
$this->setField($field);
$this->setInterval($interval);
}
/**
* Set the interval by which documents will be bucketed.
*
* @param int $interval
*
* @return $this
*/
public function setInterval($interval)
{
return $this->setParam('interval', $interval);
}
/**
* Set the bucket sort order.
*
* @param string $order "_count", "_term", or the name of a sub-aggregation or sub-aggregation response field
* @param string $direction "asc" or "desc"
*
* @return $this
*/
public function setOrder($order, $direction)
{
return $this->setParam('order', array($order => $direction));
}
/**
* Set the minimum number of documents which must fall into a bucket in order for the bucket to be returned.
*
* @param int $count set to 0 to include empty buckets
*
* @return $this
*/
public function setMinimumDocumentCount($count)
{
return $this->setParam('min_doc_count', $count);
}
}
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