Android Room @TypeConverter using Kotlin

AppDatabse.kt

@Database(entities = arrayOf(Note::class, User::class), version = 1)
@TypeConverters(Converters::class)
abstract class AppDatabse : RoomDatabase() {

    abstract fun userDAO(): UserDAO
    abstract fun noteDAO(): NoteDAO

}

Converters.kt

package com.tinmegali.daggerwithkotlin.room

import android.arch.persistence.room.TypeConverter

import java.util.Date


class Converters {

    @TypeConverter
    fun fromTimestamp(value: Long?): Date? {
        return if (value == null) null else Date(value)
    }

    @TypeConverter
    fun dateToTimestamp(date: Date?): Long? {
        return date?.time
    }

}

Converter ArrayList to String (gson) / String (gson) to ArrayList

class ListStringConverter {

@TypeConverter
fun fromString(value: String): List<String> {
    val listType = object : TypeToken<List<String>>() {}.type
    return Gson().fromJson(value, listType)  

}

@TypeConverter
fun fromListLisr(list: List<String>): String {
    val gson = Gson()
    return gson.toJson(list)
}

}

Converter ArrayList to String (gson) / String (gson) to ArrayList

class ListStringConverter {

@TypeConverter
fun fromString(value: String): List<String> {
    val listType = object : TypeToken<List<String>>() {}.type
    return Gson().fromJson(value, listType)  

}

@TypeConverter
fun fromListLisr(list: List<String>): String {
    val gson = Gson()
    return gson.toJson(list)
}

}

Wouldn't be easier to do just:

class Converters {
    @TypeConverter
    fun toListOfStrings(flatStringList: String): List<String> {
        return flatStringList.split(",")
    }
    @TypeConverter
    fun fromListOfStrings(listOfString: List<String>): String {
        return listOfString.joinToString(",")
    }
}

Is there any way to Convert a single column of a table but in the same Type? Like from String to String?

How can i do it here if data is ProfileDataResponceModel

Main Profile class
@Entity(tableName = "profile_list")
data class ProfileResponseModel(
@Embedded(prefix = "profile_")
val data: ProfileDataResponseModel,
val status: Int,
val message: String
)
ProfileData

data class ProfileDataResponseModel(
val uid: Int?,
val name: String?,
val surname: String?,
val position: String?,
val department: String?,
val phone: String?,
val email: String?,
val contacts: String?,
val home: String?,
val password: String?
)

How do I create a converter of my own Object. Let us say I have an User object and I want to add this entity to the database

@entity
data class Users(val orderId: UUID, val orderDate: Date, val manager: Manager, val office: Office) {}

I have the Manager class and the Office class that I want to us a converter, how do I go about that?

Thanks

to use*

For some reason converting kotlin.time.Duration does not work but java.time.Duration

Are there a generic Converter for enum? Or do we need write specific converter for each enum that used?