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private static function SyncXmlRating() {
    $clientSip = self::PrepareUploadXml(self::XML_AUTHOR_RNG, true);
    if ($clientSip == false) {
        return false;
    }

    Application::getConnection()->query("TRUNCATE TABLE " . self::TABLE_RATING);
    foreach ($clientSip->{'ttAuthorRngRow'} as $value) {
        Application::getConnection()->query("INS ERT IN TO " . self::TABLE_RATING .
                                            " (key_g, author, rating) VALUES (" .
                                            Application::getConnection()->getSqlHelper()
                                                       ->forSql($value->{'Key_G'}) . " , '" .
                                            Application::getConnection()->getSqlHelper()
                                                       ->forSql($value->{'Author'}) . "' , " .
                                            Application::getConnection()->getSqlHelper()
                                                       ->forSql($value->{'Range'}) . ")");
    }
    return true;

}