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<?php
namespace Elastica\Filter;
use Elastica\Exception\InvalidException;
/**
* Bool Filter
*
* @category Xodoa
* @package Elastica
* @author Nicolas Ruflin <spam@ruflin.com>
* @link http://www.elasticsearch.org/guide/reference/query-dsl/bool-query.html
*/
class Bool extends AbstractFilter
{
/**
* @var float
*/
protected $_boost = 1.0;
/**
* 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 $args Filter data
* @return \Elastica\Filter\Bool Current object
*/
public function addShould($args)
{
return $this->_addFilter('should', $args);
}
/**
* Adds must filter
*
* @param array|\Elastica\Filter\AbstractFilter $args Filter data
* @return \Elastica\Filter\Bool Current object
*/
public function addMust($args)
{
return $this->_addFilter('must', $args);
}
/**
* Adds mustNot filter
*
* @param array|\Elastica\Filter\AbstractFilter $args Filter data
* @return \Elastica\Filter\Bool Current object
*/
public function addMustNot($args)
{
return $this->_addFilter('mustNot', $args);
}
/**
* Adds general filter based on type
*
* @param string $type Filter type
* @param array|\Elastica\Filter\AbstractFilter $args Filter data
* @throws \Elastica\Exception\InvalidException
* @return \Elastica\Filter\Bool Current object
*/
protected function _addFilter($type, $args)
{
if ($args instanceof AbstractFilter) {
$args = $args->toArray();
}
else if (!is_array($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;
}
return $args;
}
/**
* Sets the boost value for this filter
*
* @param float $boost Boost
* @return \Elastica\Filter\Bool Current object
*/
public function setBoost($boost)
{
$this->_boost = $boost;
return $this;
}
}
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