protected function _buildQueryHaving(KDatabaseQuery $query)
{
// If we have a parent id level is set using the where clause
if (!$this->_state->parent_id && $this->_state->level !== null) {
// Query object does not support operators in having clauses
// So we need to build the string ourselves
$query->having('level IN (' . implode(',', (array) $this->_state->level) . ')');
}
parent::_buildQueryHaving($query);
}
