How to prevent LazyInitializationException when this library is used with Spring JPA ?

[JoffreyB31]

Demo repo : https://github.com/JoffreyB31/graphql-spring-lazyexception-demo

Hello,
I started with a blank project with Spring Initializer + Spring JPA
Added this library as a dependency

The model used is a basic User entity which can have N Account entity
I have the following query and mutations :

@Component
class UserQuery(private val userService: UserService) : Query {

  @Transactional
  fun user(): User = userService.findById(1).orElseThrow()

}

@Component
class UserMutation(private val userService: UserService) : Mutation {

  @Transactional
  fun addUser(): User {
    val account = Account("my-account-name")
    account.id = 1

    val user = User("my-username")
    user.id = 1
    user.addAccount(account)

    return userService.save(user)
  }

}

• Run the mutation addUser before to add an entry in the db
• When i run this query it will throw a LazyInitializationException because accounts is a lazy field which is not initalized

query user {
  user {
    name
    accounts {
      nickname
    }
  }
}

Is it possible to query a nested lazy field with this library when using Spring JPA ? (without using a dataloader )

The things I have tried :

• Wrapping the query user() inside a @transactional : no effect
• Passing via a DTO : works (but lazyfield are loaded without using dataloaders)
• Using a dataloader works with this query but i expected to works with a basic getter

query user {
  user {
    name
    accounts_with_dataloader {
      nickname
    }
  }
}

Thanks in advance