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

该 issue 没有指明文件或测试。首先跟踪 MutableMap<String, Any> 值是如何序列化的，以及尝试使用的 PropertyConverter 为何无法用于此映射；然后确定提议的 annotation 应如何保留 Long 值，并验证存储和取回的值仍然是 Long。