ObjectHydrator::getEntityFromIdentityMap() does not work with backed enum #10334
Description
Bug Report
| Q | A |
|---|---|
| BC Break | no |
| Version | 2.14.0 |
Summary
I have an entity with a backed enum as primary key. When I fetch a fresh entity from the database, everything works fine. But if I try to fetch an entity that is already known in the identity map, it fails.
Current behavior
It cannot load an entity with backed enum as primary key from the ObjectHydrator identity map.
Error "Object of class MyEnum could not be converted to string"
From ObjectHydrator on line 292
How to reproduce
We need 2 entities, with ManyToOne relation, so we can use a join in our request.
enum MyEnum: string
{
case Yellow = 'yellow';
case Blue = 'blue';
}#[ORM\Entity, ORM\Table(name: 'foo')]
class Foo
{
#[ORM\Id, ORM\ManyToOne(inversedBy: 'foos'), ORM\JoinColumn(nullable: false)]
private readonly FooCollection $collection;
#[ORM\Id, ORM\Column]
private readonly MyEnum $myEnum;
}#[ORM\Entity, ORM\Table(name: 'foo_collection')]
class FooCollection
{
#[ORM\Id, ORM\Column]
private int $id;
/** @var Collection<int, Foo> */
#[ORM\OneToMany(targetEntity: Foo::class, mappedBy: 'collection')]
private Collection $foos;
}create table foo_collection
(
id int not null primary key
);
create table foo
(
collectionId int not null,
myEnum varchar(255) not null,
primary key (collectionId, myEnum),
constraint foo_collection_id_fk
foreign key (collectionId) references foo_collection (id)
);
INSERT INTO foo_collection (id) VALUES (1);
INSERT INTO foo (collectionId, myEnum) VALUES (1, 'yellow'), (1, 'blue');And then, just run 2 queries to trigger the loading from the identity map
public function test(EntityManagerInterface $entityManager): void
{
$entityManager
->getRepository(FooCollection::class)
->createQueryBuilder('collection')
->leftJoin('collection.foos', 'foo')->addSelect('foo')
->getQuery()
->getResult();
$entityManager
->getRepository(FooCollection::class)
->createQueryBuilder('collection')
->leftJoin('collection.foos', 'foo')->addSelect('foo')
->getQuery()
->getResult();
}Expected behavior
No error