When having a OneToOne mapping that has a primary key that is the same as the foreign key, using the @Id attribute does not carry over when generating entities.

Example code:

class User
{
/**

• @Id @Column(type="integer", nullable=false, columnDefinition="INT UNSIGNED NOT NULL AUTO_INCREMENT")
• @GeneratedValue(strategy="AUTO")
  */
  private $id;

/**

• @OneToOne(targetEntity="User_ExtraAttrs", cascade= {"persist","remove","detach","merge","refresh"}

  , mappedBy="User")

• @JoinColumn(name="id", referencedColumnName="id")
  */
  private $UserAttrs;
  }

class User_ExtraAttrs
{
/**

• @OneToOne(targetEntity="User", cascade= {"all"}

  , inversedBy="UserAttrs")

• @Id
• @JoinColumn(name="VehicleID", referencedColumnName="VehicleID")
  */
  private $User;
  }

When running "doctrine orm:generate-entities --regenerate-entities=1 --generate-annotations=1", the @Id in User_ExtraAttrs does not carry over. It must be manually inserted.