找不到类继承

I am building an application using Zend Framework and Doctrine 2.

My code looks like this:

namespace Entities;
use Doctrine\Common\Collections\ArrayCollection;

/** 
 * @Entity (repositoryClass="Repositories\Person") 
 * @Table(name="persons")
 * @InheritanceType("SINGLE_TABLE")
 * @DiscriminatorColumn(name="type", type="string")
 * @DiscriminatorMap({"2"="User"})
 */
class Person
{
    /**
     * @Id @Column(type="integer")
     * @GeneratedValue(strategy="AUTO")
     */
    private $id;

}

And my class User

namespace Entities;
use Doctrine\Common\Collections\ArrayCollection;

/** 
 * @Entity (repositoryClass="Repositories\User") 
 */
class User extends Person
{

}

Now, I get this error:

Fatal error: Class 'Entities\Person' not found in C:\xamp\htdocs\Persons\application\m
odels\Entities\User.php on line 13

I have no idea why I get that error. I have tried calling the "Person" class in many different ways but the its not working. Any idea? Thanks!

When running in Zend Framework, you have an autoloader setup that handles the loading of classes for you dynamically.

When you run just the Doctrine tool from the command line, you don't have an autoloader at your disposal. Doctrine is trying to load the User class, which requires Person, and yet it doesn't (apparently) know how to load Person.

I think the simple solution would be to have require_once('Person.php'); at the top of your User entity. This is probably unnecessary for ZF, but will be helpful for Doctrine command line tools.