Doctrine 1.2.2 Usage Problem

[eluser]djmccormick[/eluser]
Hello Everyone,

I have a question about Doctrine (I'm using 1.2.2 and integrated using this guide) and the way to query for data. Here is my code:
Bootstrap: http://pastie.org/941280
Model: http://pastie.org/941275
Controller: http://pastie.org/941278
Controller debugging output: http://pastie.org/941290

Notice the controller and controller debugging output. I'm selecting only the username in the controller. The query it is generating according to echo $query->getSqlQuery() looks like this:

Code:

SELECT u.id AS u__id, u.username AS u__username FROM user u

Yet the array returned by $users->toArray() has every field populated:

Code:

Array
(
    [0] => Array
        (
            [id] => 1
            [username] => bbarker
            [password] => $1$LF7Rkevp$mROyY2ijf6g94R1VyuL0Q0
            [first_name] => Bob
            [last_name] => Barker
            [email_address] => [email protected]
            [created_at] =>
            [updated_at] =>
        )

)

I don't understand why it is returning all data and not simply the field I requested. In the Doctrine 1.2 documentation they show a similar example (it's the first example under this heading) and it's not getting every field. There is a slot for every field but those that weren't requested are blank.

Thank you in advance for any advice and tips from everyone.

Regards,
Dustin