OneToOne inverse yields doctrine.associationType false positive

[bobvandevijver]

Consider the following construct

#[ORM\Entity]
class A {
  #[ORM\OneToOne(inversedBy: 'a', cascade: ['persist'], fetch: 'EXTRA_LAZY')]
  private ?B $b = null;
}

#[ORM\Entity]
class B {
  #[ORM\OneToOne(mappedBy: 'b')]
  private A $a; // Default in constructor
}

This results in:

 ------ ----------------------------------------------------------------------------------------------------------------
  Line   src/Entity/B.php
 ------ ----------------------------------------------------------------------------------------------------------------
  29     Property App\Entity\B::$a type mapping mismatch: database can contain
         App\Entity\A|null but property expects App\Entity\A.
         🪪  doctrine.associationType
 ------ ----------------------------------------------------------------------------------------------------------------

However, this is a false positive, as the $a never even makes it to the database with this construction. The A holds an optional reference to the B object.

According to doctrine, when trying to add a join column definition to disallow a null value.

App\Entity\B#a is a OneToOne inverse side, which does not allow join columns.

[jhae-de]

Specifying nullable on columns that end up being used in a primary key is depreacted since doctrine/orm 3.6.0. That seems to be heading in the same direction.

#[ORM\Entity]
class A {
}

#[ORM\Entity]
class B {
  #[ORM\ManyToOne]
  #[ORM\JoinColumn]
  public A $a;
}

This results in:

 ------ -----------------------------------------------------------------------------------------
  Line   src/Entity/B.php                                                                                                                                                                             
 ------ -----------------------------------------------------------------------------------------
  0      Property App\Entity\B::$a type mapping mismatch: database can contain
         App\Entity\B|null but property expects App\Entity\B.  
         🪪  doctrine.associationType                                                                                                                                                                              
 ------ -----------------------------------------------------------------------------------------

Applies to JoinColumn and InverseJoinColumn.