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<?php
namespace Elastica\Filter;
/**
* Missing Filter.
*
* @author Maciej Wiercinski <maciej@wiercinski.net>
*
* @link http://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-missing-filter.html
*/
class Missing extends AbstractFilter
{
/**
* Construct missing filter.
*
* @param string $field OPTIONAL
*/
public function __construct($field = '')
{
if (strlen($field)) {
$this->setField($field);
}
}
/**
* Set field.
*
* @param string $field
*
* @return $this
*/
public function setField($field)
{
return $this->setParam('field', (string) $field);
}
/**
* Set "existence" parameter.
*
* @param bool $existence
*
* @return $this
*/
public function setExistence($existence)
{
return $this->setParam('existence', (bool) $existence);
}
/**
* Set "null_value" parameter.
*
* @param bool $nullValue
*
* @return $this
*/
public function setNullValue($nullValue)
{
return $this->setParam('null_value', (bool) $nullValue);
}
}
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