public static function getAssetRules($asset, $recursive = false)
{
    ...
    // If the asset identifier is numeric assume it is a primary key, else lookup by name.
    if (is_numeric($asset))
    {
        $query->where('(a.id = ' . (int) $asset . ($recursive ? ' OR a.parent_id=0' : '') . ')');
        //$query->where('(a.id = ' . (int) $asset . ')');
    }
    else
    {
        $query->where('(a.name = ' . $db->quote($asset) . ($recursive ? ' OR a.parent_id=0' : '') . ')');
        //$query->where('(a.name = ' . $db->quote($asset) . ')');
    }
}