Autoloading namespaced model in yii 1.1

EmailController.php

protected/controllers/EmailController.php
<?php

// no namespace needed here

class EmailController extends controller{

      public function actionSend(){
             $recipient = new \application\documents\email\Recipient();
      }      
}

Recipient.php

protected/documents/email/Recipient.php
<?php

namespace application\documents\email;

class Recipient extends EMongoDocument{}

You can make action code look nicer by doing this in controller:

<?php

use application\documents\email\Recipient;

class EmailController extends controller{

    public function actionSend(){
        $recipient = new Recipient();
    }
}