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<?php
namespace Elastica\Filter;
/**
* Prefix filter
*
* @category Xodoa
* @package Elastica
* @author Jasper van Wanrooy <jasper@vanwanrooy.net>
* @link http://www.elasticsearch.org/guide/reference/query-dsl/prefix-filter.html
*/
class Prefix extends AbstractFilter
{
/**
* Holds the name of the field for the prefix.
*
* @var string
*/
protected $_field = '';
/**
* Holds the prefix string.
*
* @var string
*/
protected $_prefix = '';
/**
* Creates prefix filter
*
* @param string $field Field name
* @param string $prefix Prefix string
*/
public function __construct($field = '', $prefix = '')
{
$this->setField($field);
$this->setPrefix($prefix);
}
/**
* Sets the name of the prefix field.
*
* @param string $field Field name
* @return \Elastica\Filter\Prefix
*/
public function setField($field)
{
$this->_field = $field;
return $this;
}
/**
* Sets the prefix string.
*
* @param string $prefix Prefix string
* @return \Elastica\Filter\Prefix
*/
public function setPrefix($prefix)
{
$this->_prefix = $prefix;
return $this;
}
/**
* Converts object to an array
*
* @see \Elastica\Filter\AbstractFilter::toArray()
* @return array data array
*/
public function toArray()
{
$this->setParam($this->_field, $this->_prefix);
return parent::toArray();
}
}
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