/**
* @author Martin Lonsky (martin@lonsky.net, +420 736 645876)
* @param string $combiner
* @return \ElasticSearchPredicate\Predicate\Predicates\PredicateInterface
* @throws \ElasticSearchPredicate\Predicate\PredicateException
*/
public function setCombiner(string $combiner) : PredicateInterface
{
if (strtoupper($combiner) === 'or') {
throw new PredicateException('Not allowed combiner inside not predicate');
}
return parent::setCombiner($combiner);
}
/**
* @author Martin Lonsky (martin@lonsky.net, +420 736 645876)
* @return array
* @throws \ElasticSearchPredicate\Predicate\PredicateException
*/
public function toArray() : array
{
$_functions = $this->getFunctions();
if ($_functions->isEmpty()) {
throw new PredicateException('FunctionScore should contain at least one function');
}
$_ret = ['function_score' => []];
if (!empty($_query = parent::toArray())) {
$_ret['function_score']['query'] = $_query;
}
if (isset($this->_boost_mode)) {
$_ret['function_score']['boost_mode'] = $this->_boost_mode;
}
if (isset($this->_max_boost)) {
$_ret['function_score']['max_boost'] = $this->_max_boost;
}
if (isset($this->_score_mode)) {
$_ret['function_score']['score_mode'] = $this->_score_mode;
}
if (isset($this->_min_score)) {
$_ret['function_score']['min_score'] = $this->_min_score;
}
$_ret['function_score']['functions'] = $_functions->map(function (FunctionInterface $item) {
return $item->toArray();
})->toArray();
return $_ret;
}