Seeing a SCHEMA_VALIDATION_FAILED for this, but why?

[Darrin_Smith1 (Darrin Smith)]

I have a couple of simple RealmObject classes that look like this:

type or paste code here
class Patient : RealmObject {
@PrimaryKey
var _id: ObjectId = ObjectId()
var firstName: String = ""
var lastName: String = ""
var visits: RealmList<PelletInsertionVisit> = realmListOf(PelletInsertionVisit())
var lastFourOfSSN: String = ""
}

class PelletInsertionVisit : RealmObject {
@PrimaryKey
var _id: ObjectId = ObjectId()
var visitDate = LocalDateTime.now().toEpochSecond(ZoneOffset.UTC)
var pelletsUsed: RealmList<Pellet> = realmListOf(Pellet())
}

class Pellet: EmbeddedRealmObject {
var size = PelletSize.ZERO.value
var lotNumber: String = "UNKNOWN"
}

When I perform this code, the open throws an exception:

fun openPatientRealm() : Realm {
val configuration = RealmConfiguration.create(schema = setOf(Patient::class))
Logger.d("About to open Realm Configuration: $configuration")

try {
    val realm = Realm.open(configuration)  //EXCEPTION HERE

    Logger.d("Realm opened: : ${realm.toString()}")

    return realm
}
catch (ex: Exception) {
    Logger.e("Exception caught: " + ex.message)
    Logger.e("Stack trace: " + ex.stackTraceToString())
}

throw Exception("Realm Could Not be Opened")
}

The exception is:

[RLM_ERR_SCHEMA_VALIDATION_FAILED]: Schema validation failed due to the following errors:

• Property ‘PelletInsertionVisit.pelletsUsed’ of type ‘array’ has unknown object type ‘Pellet’

What is it that I am doing wrong, please? It looks, to me, to be like the documentation says it should be using the EmbeddedRealmObject but I’m missing something.

[Cory_Bullinger]

Hi Darrin,

You need to include the embedded class in the schema. Same for the PelletInsertionVisit class if you’re using it in the realm – the schema should contain all of the classes that you want to work with in your realm.

// Update the schema to include the embedded object class
val configuration = RealmConfiguration.create(schema = setOf(Patient::class, Pellet::class))

This is mentioned in the Open a Realm page, but I also have a ticket open to improve the docs here since it seems to be cause for confusion

[Darrin_Smith1 (Darrin Smith)]

BINGO!!!

Thank you so much for this and thank you for getting the documentation updated to make this more clear!