Schema validation failed due to embedded object

[vardansargsyan92]

HI I am trying to refactor my database using EmbeddedObject inside my Xamarin.Forms project. I have the following classes:

public class MasterItemTruckExt : EmbeddedObject
{
    // Shuttle block
    public int ShuttleDefaultCapacity { get; set; }
    public int ShuttleMaxCapacity { get; set; }
    public int ShuttleDefaultLoadTime { get; set; }
    public int ShuttleMaxLoadTime { get; set; }
    public int ShuttleDefaultUnloadTime { get; set; }
    public int ShuttleMaxUnloadTime { get; set; }

    // LD block
    public int LDDefaultCapacity { get; set; }
    public int LDMaxCapacity { get; set; }
    public int LDDefaultLoadTime { get; set; }
    public int LDMaxLoadTime { get; set; }
    public int LDDefaultUnloadTime { get; set; }
    public int LDMaxUnloadTime { get; set; }
}
public class MasterItem : RealmObject
{
    [PrimaryKey]
    [MapTo("_id")]
    public string Id { get; set; } = Guid.NewGuid().ToString();

    public string Name { get; set; }
    public string Description { get; set; }

    public MasterItem Group { get; set; }

    [Backlink(nameof(Group))]
    public IQueryable<MasterItem> GroupMasterItems { get; }
  
    public double Cubes { get; set; }

    public int TimePerPiece { get; set; }

    public Move.Move Move { get; set; }

    [Backlink(nameof(AutoIncludedItem.ParentItem))]
    public IQueryable<AutoIncludedItem> AutoIncludedItems { get; }

    public decimal DeclaredAmount { get; set; }
    public decimal DeductibleAmount { get; set; }

    public MasterItemTruckExt MasterItemTruckExt { get; set; }

}

When I try to regenerate the database it's sayd that

`Unhandled exception. Realms.Exceptions.RealmException: Schema validation failed due to the following errors:

• Property 'SalesTaxRate.MasterItemTruckExt' of type 'object' has unknown object type 'MasterItemTruckExt'

So what I am doing wrong?

Here is the whole stack trace:

Unhandled exception. Realms.Exceptions.RealmException: Schema validation failed due to the following errors:
Property 'SalesTaxRate.MasterItemTruckExt' of type 'object' has unknown object type 'MasterItemTruckExt'
   at Realms.NativeException.ThrowIfNecessary(Func`2 overrider)
   at Realms.SharedRealmHandle.Open(Configuration configuration, RealmSchema schema, Byte[] encryptionKey)
   at Realms.RealmConfiguration.CreateRealm(RealmSchema schema)
   at Realms.RealmConfiguration.CreateRealmAsync(RealmSchema schema, CancellationToken cancellationToken)
   at Realms.Realm.GetInstanceAsync(RealmConfigurationBase config, CancellationToken cancellationToken)
   at QQPad.Mobile.Core.Factories.RealmFactory.GetDefaultRealmAsync() in C:\Data\Projects\QQPad\QQPadXamarinRepos\QQPad.Mobile\QQPad.Mobile.Core\Factories\Implementation\RealmFactory.cs:line 31
   at QQPad.Mobile.Core.DataAccess.RealmDbContext.GetRealmAsync() in C:\Data\Projects\QQPad\QQPadXamarinRepos\QQPad.Mobile\QQPad.Mobile.Core\DataAccess\Implementation\RealmDbContext.cs:line 103
   at QQPad.Mobile.Core.DataAccess.RealmDbContext.GetItemsAsync[T]() in C:\Data\Projects\QQPad\QQPadXamarinRepos\QQPad.Mobile\QQPad.Mobile.Core\DataAccess\Implementation\RealmDbContext.cs:line 23
   at QQPad.Mobile.Core.Services.DatabaseInitializerService.IsInitializedAsync(CancellationToken token) in C:\Data\Projects\QQPad\QQPadXamarinRepos\QQPad.Mobile\QQPad.Mobile.Core\Services\Implementation\DatabaseInitializerService.cs:line 129
   at QQPad.Mobile.Core.Services.DatabaseInitializerService.InitDatabaseIfNecessaryAsync(IProgress`1 progress, CancellationToken token) in C:\Data\Projects\QQPad\QQPadXamarinRepos\QQPad.Mobile\QQPad.Mobile.Core\Services\Implementation\DatabaseInitializerService.cs:line 75
   at QQPad.Mobile.Console.Program.GenerateDatabase(GenerateOptions options) in C:\Data\Projects\QQPad\QQPadXamarinRepos\QQPad.Mobile\QQPad.Mobile.Console\Program.cs:line 31
   at CommandLine.ParserResultExtensions.WithParsedAsync[T](ParserResult`1 result, Func`2 action)
   at QQPad.Mobile.Console.Program.Main(String[] args) in C:\Data\Projects\QQPad\QQPadXamarinRepos\QQPad.Mobile\QQPad.Mobile.Console\Program.cs:line 23
   at QQPad.Mobile.Console.Program.<Main>(String[] args)

[papafe]

Hi @vardansargsyan92, which version of Realm are you using?
Also, can you show the way you're initialising your Realm?

[vardansargsyan92]

hi @papafe . The realm version is 10.1.4 and here is initialization part.

internal class RealmFactory : IRealmFactory
    {
        private readonly IConfigurationProvider _configuration;
        private readonly IRealmMigrationFactory _migrationFactory;
        private readonly Type[] _realmTypes;
        private readonly AppConfiguration _appConfiguration;
        private Realm _realm;

        public RealmFactory(IConfigurationProvider configuration,
                            AppConfiguration appConfiguration,
                            IRealmMigrationFactory migrationFactory)
        {
            _appConfiguration = appConfiguration;
            _configuration = configuration;
            _migrationFactory = migrationFactory;
            _realmTypes = GetType().Assembly.GetTypes().Where(type => type.IsSubclassOf(typeof(RealmObject))).ToArray();
        }

        public async Task<Realm> GetDefaultRealmAsync()
        {
            return _realm ??= await Realm.GetInstanceAsync(new RealmConfiguration(_configuration.RealmDbPath)
                                                           {
                                                               SchemaVersion = _appConfiguration.RealmDbSchemeVersion,
                                                               MigrationCallback = MigrationCallback,
                                                               ObjectClasses = _realmTypes
                                                           });
        }

        private void MigrationCallback(Migration migration, ulong oldSchemaVersion)
        {
            foreach(IMigration realmMigration in _migrationFactory.GetMigrations())
            {
                realmMigration.Migrate(migration, oldSchemaVersion);
            }
        }
    }

The application crashes when on method GetDefaultRealmAsync

[nirinchev]

The code you use to initialize _realmTypes only looks for RealmObject inheritors but you're using EmbeddedObject as a base class for some of your models. You can change that to instead look for inheritors of RealmObjectBase although if you just want to include all models from the current assembly you might as well leave that null and have Realm autodiscover the schema - it will be a bit more efficient than using reflection.

[vardansargsyan92]

oh I see now )) Thanks a lot @nirinchev . I'll do that change.

[DominicFrei]

oh I see now )) Thanks a lot @nirinchev . I'll do that change.

Hi @vardansargsyan92, I was just going through unanswered threads and found your comment.

Did this end up working for you or are they any other questions we can help you with?

[vardansargsyan92]

Hi Dominic. Thanks a lot for your attention. Yes, that worked for me. Your support is highly appreciated. Thank you )) пн, 19 июл. 2021 г. в 14:23, Dominic Frei ***@***.***>:

…

oh I see now )) Thanks a lot @nirinchev <https://github.com/nirinchev> . I'll do that change. Hi @vardansargsyan92 <https://github.com/vardansargsyan92>, I was just going through unanswered threads and found your comment. Did this end up working for you or are they any other questions we can help you with? — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#2387 (reply in thread)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AEWGPCKF3DGJK5R46ASLZ7TTYP4JDANCNFSM45JNGDOQ> .