Table Prefix, problem with left join convention structure. about notorm HOT 4 OPEN

protected function createJoins($val) {
    $return = array();
    preg_match_all('~\\b([a-z_][a-z0-9_.:]*[.:])[a-z_*]~i', $val, $matches);
    foreach ($matches[1] as $names) {
        $parent = $this->table;
        if ($names != "$parent.") { // case-sensitive
            preg_match_all('~\\b([a-z_][a-z0-9_]*)([.:])~i', $names, $matches, PREG_SET_ORDER);
            foreach ($matches as $match) {
                list(, $name, $delimiter) = $match;
                $table = $this->notORM->structure->getReferencedTable($name, $parent);
                $column = ($delimiter == ':' ? $this->notORM->structure->getPrimary($parent) : $this->notORM->structure->getReferencedColumn($name, $parent));
                $primary = ($delimiter == ':' ? $this->notORM->structure->getReferencingColumn($table, $parent) : $this->notORM->structure->getPrimary($table));
                $return[$name] = " LEFT JOIN $table" . ($table != $name ? " AS $name" : "") . " ON $parent.$column = $name.$primary"; // should use alias if the table is used on more places
                $parent = $name;
            }
        }
    }
    return $return;
}

$primary = ($delimiter == ':' ? $this->notORM->structure->getReferencingColumn($parent, $table) : $this->notORM->structure->getPrimary($table));

    protected function getColumnFromTable($name) {
        if ($this->table != '%s' && preg_match('(^' . str_replace('%s', '(.*)', preg_quote($this->table)) . '$)', $name, $match)) {
            return $match[1];
        }
        return substr($name, strlen($this->prefix));
    }