doctrine problem

3 entities.php

<?php

/**
 * Class Site
 * @ORM\Entity
 * @ORM\Table(name="ad_posting_site",
 *      uniqueConstraints={@ORM\UniqueConstraint(name="display_name", columns={"display_name"})}
 * )
 */
class Site extends AbstractEntityParams
{
    /**
     * @ORM\Id @ORM\GeneratedValue @ORM\Column(type="integer")
     * @var int
     */
    protected $id;

    /**
     * @ORM\Column(type="string", length=50, name="display_name")
     * @var string
     */
    protected $displayName;

    /**
     * @ORM\Column(type="string", length=255)
     * @var string
     */
    protected $uri;
}


/**
 * Class Ad
 * @ORM\Entity
 * @ORM\Table(name="ad_posting_ad")
 */
class Ad
{
    /**
     * @ORM\Id @ORM\GeneratedValue @ORM\Column(type="integer")
     * @var int
     */
    protected $id;

    /**
     * @ORM\ManyToOne(targetEntity="AdPosting\Entity\Site")
     * @var \AdPosting\Entity\Site
     */
    protected $site;

    /**
     * @ORM\ManyToOne(targetEntity="AdPosting\Entity\User")
     * @var \AdPosting\Entity\User
     */
    protected $user;
}



/**
 * Class Account
 * @ORM\Entity
 * @ORM\Table(name="ad_posting_account",
 *      uniqueConstraints={@ORM\UniqueConstraint(name="user_id", columns={"user_id", "site_id"})}
 * )
 */
class Account extends AbstractEntityParams
{
    /**
     * @ORM\Id @ORM\GeneratedValue @ORM\Column(type="integer")
     * @var int
     */
    protected $id;

    /**
     * @ORM\ManyToOne(targetEntity="AdPosting\Entity\User")
     * @var User
     */
    protected $user;

    /**
     * @ORM\ManyToOne(targetEntity="AdPosting\Entity\Site")
     * @var Site
     */
    protected $site;

    /**
     * @ORM\Column(type="string", length=64)
     * @var string
     */
    protected $login;

    /**
     * @ORM\Column(type="string", length=64, nullable=true)
     * @var string
     */
    protected $password;

    /**
     * @ORM\Column(type="datetime", nullable=true)
     * @var DateTime
     */
    protected $created;
}





/**
 * Class User
 * @ORM\Entity
 * @ORM\Table(name="ad_posting_user")
 */
class User extends AbstractEntityParams
{
    /**
     * @ORM\Id @ORM\GeneratedValue @ORM\Column(type="integer")
     * @var int
     */
    protected $id;

    /**
     * @ORM\Column(type="string", length=64, name="preferred_login", unique=true, nullable=true)
     * @var string
     */
    protected $preferredLogin;

    /**
     * @ORM\Column(type="string", length=50, name="display_name", nullable=true)
     * @var string
     */
    protected $displayName;

    /**
     * @ORM\Column(type="string", length=64)
     * @var string
     */
    protected $password;

    /**
     * @ORM\Column(type="string", length=30, nullable=true)
     * @var string
     */
    protected $name;

    /**
     * @ORM\Column(type="string", length=30, nullable=true)
     * @var string
     */
    protected $surname;

    /**
     * @ORM\Column(type="date", nullable=true)
     * @var DateTime
     */
    protected $birthday;

    /**
     * @ORM\Column(type="string", length=8, name="postal_code", nullable=true)
     * @var string
     */
    protected $postalCode;

    /**
     * @ORM\ManyToOne(targetEntity="AdPosting\Entity\Account" )
     * @ORM\JoinColumn(name="primary_account_id")
     * @var \AdPosting\Entity\Account
     */
    protected $primaryAccount;

    /**
     * @ORM\Column(type="datetime", nullable=true)
     * @var DateTime
     */
    protected $created;
}

а нужен еще свойство типо как
/**
* @Orm\OneToOne(targetEntity="AdPosting\Entity\Account")
* @Orm\JoinColumns{
* @Orm\JoinColumn(name="user_id", referencedColumnName="user_id"),
* @Orm\JoinColumn(name="site_id", referencedColumnName="site_id")
* }
* @var \AdPosting\Entity\Account
*/
protected $account;

Но такое доктрина не понимает:
[Doctrine\ORM\ORMException] Column namesite_idreferenced for relation from AdPosting\Entity\Ad towards AdPosting\Entity\Account does not exist.