Hi, I am working on migration from KMongo to Mongo...

# kmongo

[Tomas Kormanak]

Hi, I am working on migration from KMongo to MongoDb Kotlin driver and we would like to keep using kmongo-id for now. But I can't find a way how to setup serializers within the driver and I am getting this error:

Class 'StringId' is not registered for polymorphic serialization in the scope of 'Id'

Any idea?

[Giuliopime]

How did you register the Id serializer in the mongo client?

[Tomas Kormanak]

I use this:

val idCodec = KotlinSerializerCodec.create(
    Id::class,
    serializersModule = IdKotlinXSerializationModule
)

val registry = CodecRegistries.fromRegistries(
    CodecRegistries.fromCodecs(idCodec), MongoClientSettings.getDefaultCodecRegistry()
)

val settings = MongoClientSettings.builder()
    .applyConnectionString(ConnectionString(config.getTyped("database.url")))
    .codecRegistry(registry)
    .retryWrites(true)
    .build()

val mongoClient = MongoClient.create(settings)

[Tomas Kormanak]

But I found KotlinSerializerCodec.create returns null