PropertyRelation::existsByFilter

protected function existsByFilter($filter)
{
	$r = new Result();

	$row = $this->getEntityTable()::getList(['filter'=>['PROPERTY_ID'=>$filter['PROPERTY_ID'], 'ENTITY_ID'=>$filter['ENTITY_ID'], 'ENTITY_TYPE'=>$filter['ENTITY_TYPE']]])->fetchAll();
	if(isset($row[0]['PROPERTY_ID']) == false)
		$r->addError(new Error('property relation is not exists', 201640400004));

	return $r;
}