Not able to call functions on extracted entities with Doctrine 2 - php

Question

I'm new to PHP and also with Doctrine. (Worked before with Hibernate ORM implementation).
My problem is that after I fetch a record from my database by the entityManager, I can't access the object methods at all. Below are some code snippets:
Entity manager creation:
$classLoader = new \Doctrine\Common\ClassLoader('entities');
$classLoader->register();
$config = new Configuration();
$cache = new ArrayCache();
$config->setMetadataCacheImpl($cache);
$driverImpl = $config->newDefaultAnnotationDriver('entities');
$driverImpl->getAllClassNames();
$config->setMetadataDriverImpl($driverImpl);
$config->setQueryCacheImpl($cache);
$config->setProxyDir('proxies');
$config->setProxyNamespace('proxies\namespaces');
$config->setAutoGenerateProxyClasses(true);
$em = EntityManager::create(getConnOptions(), $config);
it works fine!
Here is my Entity class :
namespace entities\positions;
/**
* Positions
*
* #Table(name="positions")
* #Entity
*/
class Positions
{
/**
* #var bigint $id
*
* #Column(name="id", type="bigint", nullable=false)
* #Id
* #GeneratedValue(strategy="IDENTITY")
*/
private $id;
/**
* #var string $notes
*
* #Column(name="notes", type="string", length=255, nullable=true)
*/
private $notes;
/**
* #var integer $number
*
* #Column(name="number", type="integer", nullable=true)
*/
public $number;
/**
* #var Volumes
*
* #ManyToOne(targetEntity="Volumes")
* #JoinColumns({
* #JoinColumn(name="volume_id", referencedColumnName="id")
* })
*/
private $volume;
public function getNumber() {
return $this->number;
}
}
and here is the code that generates error:
$found = $this->em->find('Positions', 1);
echo $found->getNumber();
the error that I get is the following:
Fatal error: Call to undefined method Positions::getNumber() in /var/www/php-test/business/Test.php on line 30
Can you suggest me how to fix it?
Thanks.
N.B. It gives me the same error if I try to call : $found->number, that I have made public for this reason.

Answer 1

The problem is due to the fact that I was declared the namespace in entities. This was the reason for what I got this error. If you have entities under entities/ directory scattered in it's own directory, you need to put this paths in the driver creation array configuration :
$driverImpl = $config->newDefaultAnnotationDriver(array("entities", "entities/dir1", "entities/dir2"));
That does the trick.