Doctrine Load Module Exception

I'm new to doctrine. I created an bootstrap file like the following one:

require_once(dirname(__FILE__)."/../conf/general.php");
require_once(dirname(__FILE__).'/Doctrine/lib/Doctrine.php');
spl_autoload_register(array('Doctrine', 'autoload'));

$manager = Doctrine_Manager::getInstance();
$manager->setAttribute(Doctrine::ATTR_VALIDATE, Doctrine::VALIDATE_ALL); 
$manager->setAttribute(Doctrine_Core::ATTR_AUTO_ACCESSOR_OVERRIDE, true); #for accessor  overriding
$manager->setAttribute(Doctrine_Core::ATTR_AUTOLOAD_TABLE_CLASSES, true); #in order to be able to use the XTable classes
$manager->setAttribute(Doctrine_Core::ATTR_MODEL_LOADING,    Doctrine_Core::MODEL_LOADING_CONSERVATIVE); #to conservatively load files
$manager->setAttribute(Doctrine::ATTR_EXPORT, Doctrine::EXPORT_ALL); 

$dsn = "mysql:dbname=".DBNAME.";host=".DBHOST;
$dbh = new PDO( $dsn, DBUSERNAME, DBPASS );
$conn = Doctrine_Manager::connection( $dbh ); 
Doctrine_Core::loadModels('doc_models'); #In order to be able to work with models

php bootstrap.php

command works just as expected. But I have a file X.php under directory Y and i require bootstrap.php file in X.php ;but when i ran the X.php in the directory Y like

 php X.php

I got the following exception:

Doctrine_Exception: You must pass a valid path to a directory containing Doctrine models in /path_to_directory_of_bootstrap_file/Doctrine/lib/Doctrine/Core.php on line 635

Now, how can i fix this issue?

BTW开发者_StackOverflow中文版, when i put X.php and bootstrap.php in the same directory it works as expected. I also tried to require with absolute paths but this didn't solve my problem. I'm testing on Ubuntu 9.10 and installed doctrine from pear. Doctrine version is 1.2.0.

---

Did you try using absolute paths while requiring? Realpath can help you create those paths.

---

I think this error gets triggered when doctrine is expecting some model directories to exist. The error also occurs if you try to generate SQL from a schema.yml BEFORE you have built the model classes. When the model classes get built they create a bunch of directories and it's these that i think you are missing.