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<?php
namespace Elastica\Filter;
use Elastica\Exception\InvalidException;
/**
* Bool Filter.
*
* @author Nicolas Ruflin <spam@ruflin.com>
*
* @link http://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-bool-filter.html
*/
class BoolFilter extends AbstractFilter
{
/**
* Must.
*
* @var array
*/
protected $_must = array();
/**
* Should.
*
* @var array
*/
protected $_should = array();
/**
* Must not.
*
* @var array
*/
protected $_mustNot = array();
/**
* Adds should filter.
*
* @param array|\Elastica\Filter\AbstractFilter $args Filter data
*
* @return $this
*/
public function addShould($args)
{
return $this->_addFilter('should', $args);
}
/**
* Adds must filter.
*
* @param array|\Elastica\Filter\AbstractFilter $args Filter data
*
* @return $this
*/
public function addMust($args)
{
return $this->_addFilter('must', $args);
}
/**
* Adds mustNot filter.
*
* @param array|\Elastica\Filter\AbstractFilter $args Filter data
*
* @return $this
*/
public function addMustNot($args)
{
return $this->_addFilter('mustNot', $args);
}
/**
* Adds general filter based on type.
*
* @param string $type Filter type
* @param array|\Elastica\Filter\AbstractFilter $args Filter data
*
* @throws \Elastica\Exception\InvalidException
*
* @return $this
*/
protected function _addFilter($type, $args)
{
if ($args instanceof AbstractFilter) {
$args = $args->toArray();
} elseif (!is_array($args)) {
throw new InvalidException('Invalid parameter. Has to be array or instance of Elastica\Filter');
} else {
$parsedArgs = array();
foreach ($args as $filter) {
if ($filter instanceof AbstractFilter) {
$parsedArgs[] = $filter->toArray();
}
}
$args = $parsedArgs;
}
$varName = '_'.$type;
$this->{$varName}[] = $args;
return $this;
}
/**
* Converts bool filter to array.
*
* @see \Elastica\Filter\AbstractFilter::toArray()
*
* @return array Filter array
*/
public function toArray()
{
$args = array();
if (!empty($this->_must)) {
$args['bool']['must'] = $this->_must;
}
if (!empty($this->_should)) {
$args['bool']['should'] = $this->_should;
}
if (!empty($this->_mustNot)) {
$args['bool']['must_not'] = $this->_mustNot;
}
if (isset($args['bool'])) {
$args['bool'] = array_merge($args['bool'], $this->getParams());
}
return $args;
}
}
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