Store Map values as Long instead of Int

Is there an existing issue?

• I have searched existing issues

Use case

I am storing a mapping:

val mapping = mutableMapOf(
    "key1" to mutableMapOf(
        "subkey1" to 1L,
        "subkey2" to 1L,
        "subkey3" to 1L
    ),
   "key2" to 1L

that is represented in the data class as follows:

@Entity
data class MyDataClass(
    @Id var id: Long = 0,
    var mapping: MutableMap<String, Any>? = null

ObjectBox will store the Long values as Ints due to not being wide enough. These breaks use cases where we do want to store the Long values as Long and not as Ints (for example test cases that use the same generated mock data to store in the database and to test against).

Proposed solution

Have an annotation that tells ObjectBox to store Long values as Long.

Alternatives

Tried using a PropertyConverter however this breaks for the mapping I've provided.

Additional context

Kotlin
Android

El issue no menciona archivos ni pruebas. Empieza trazando cómo se serializan los valores de MutableMap<String, Any> y por qué el PropertyConverter que se intentó no funciona para este mapeo; después, define cómo la anotación propuesta debe conservar los valores Long y verifica que los valores almacenados y recuperados sigan siendo Long.