function getCommand(Request $req)
{
$previous = $req->getLastCommand();
if (!$previous) {
$cmd = $req->getProperty('cmd');
if (!$cmd) {
$req->setProperty('cmd', 'default');
return self::$default_cmd;
}
} else {
$cmd = $this->getForward($req);
if (!$cmd) {
return null;
}
}
$cmd_obj = $this->resolveCommand($cmd);
if (!$cmd_obj) {
throw new \woo\base\AppException("couldn't resolve '{$cmd}'");
}
$cmd_class = get_class($cmd_obj);
if (isset($this->invoked[$cmd_class])) {
throw new \woo\base\AppException("circular forwarding");
}
$this->invoked[$cmd_class] = 1;
return $cmd_obj;
}
