Circular references not resolved if JSON has not been processed yet

[omatrot]

I have the following Circular reference: Vehicle->Device->Vehicle

Vehicle has a Device nested object and vice-versa.

    createModelSchema(Vehicule, {
      vehiculeId: identifier(),
      companyId: primitive(),
      phoneNumber: primitive(),
      hardwareId: primitive(),
      vehiculeUserId: primitive(),
      gpsBoxType: primitive(),
      category: primitive(),
      name: primitive(),
      description: primitive(),
      iconId: primitive(),
      gpsBoxTrackingDelay: primitive(),
      address: primitive(),
      addressProtocol: primitive(),
      boardId: primitive(),
      rowVersion: primitive(),
      rowEnabled: primitive(),
      dbInsertTime: date(),
      customId: primitive(),
      hasGeoWorker: primitive(),
      device: reference(Device, nullHandler),
    });
    createModelSchema(Device, {
      imei: identifier(),
      brand: primitive(),
      model: primitive(),
      name: primitive(),
      osVersion: primitive(),
      appVersion: primitive(),
      rowVersion: primitive(),
      vehicule: reference(Vehicule, nullHandler)
    });

When I deserialize Vehicule, because Device has not been seen yet, the corresponding property is not set.

I would say that unresolved references are left unprocessed.

Am I wrong about that? Is there a simple way to solve this problem?

[akphi]

@omatrot I think you should take a look at #9 I managed to do it with something like this:

class A {
 b: B;
}

class B {
 a: A
}

class C {
  // declare your model schema here, it has to be declared after A and B,
  // for my case I have class C using class A so this is natural, but maybe you can just declare
  // everything in one file
}

(also, I use object instead of reference)

[qb20nh]

if A -> object() -> B, B -> object() -> A creates a circular serialization structure which will run forever. create id field on either side and reference them with reference()

I used this util function to generate unique id for distinct classes

const idMap: { [className: string]: number } = {}

export const id = <T extends Function>(clazz: T) => {
  const next = (idMap[clazz.name] ?? 0) + 1
  idMap[clazz.name] = next
  return next
}

and use like this

class Model {
  readonly id: number = id(Model)
  ...
}