Error compiling optimized DbContext with concurrency token on 8.0

[isaac-ferrer-tmt]

I have some entities with a uint concurrency token, mapped to the xmin system column, for example:

    public class SomeEntity
    {
        public int Id { get; set; }

        [Timestamp]
        public uint Version { get; set; }
    }

I have upgraded to 8.0. When I run Optimize-DbContext to compile the context, I get the following exception:

System.InvalidOperationException: The type mapping used is incompatible with a compiled model. The mapping type must have a 'public static readonly NpgsqlUIntTypeMapping NpgsqlUIntTypeMapping.Default' property.
   at Microsoft.EntityFrameworkCore.Design.Internal.CSharpRuntimeAnnotationCodeGenerator.CreateDefaultTypeMapping(CoreTypeMapping typeMapping, CSharpRuntimeAnnotationCodeGeneratorParameters parameters)
   at Microsoft.EntityFrameworkCore.Design.Internal.RelationalCSharpRuntimeAnnotationCodeGenerator.Create(CoreTypeMapping typeMapping, CSharpRuntimeAnnotationCodeGeneratorParameters parameters, ValueComparer valueComparer, ValueComparer keyValueComparer, ValueComparer providerValueComparer)
   at Npgsql.EntityFrameworkCore.PostgreSQL.Design.Internal.NpgsqlCSharpRuntimeAnnotationCodeGenerator.Create(CoreTypeMapping typeMapping, CSharpRuntimeAnnotationCodeGeneratorParameters parameters, ValueComparer valueComparer, ValueComparer keyValueComparer, ValueComparer providerValueComparer)
   at Microsoft.EntityFrameworkCore.Design.Internal.ICSharpRuntimeAnnotationCodeGenerator.Create(CoreTypeMapping typeMapping, IProperty property, CSharpRuntimeAnnotationCodeGeneratorParameters parameters)
   at Microsoft.EntityFrameworkCore.Scaffolding.Internal.CSharpRuntimeModelCodeGenerator.Create(IProperty property, String variableName, Dictionary`2 propertyVariables, CSharpRuntimeAnnotationCodeGeneratorParameters parameters)
   at Microsoft.EntityFrameworkCore.Scaffolding.Internal.CSharpRuntimeModelCodeGenerator.Create(IProperty property, Dictionary`2 propertyVariables, CSharpRuntimeAnnotationCodeGeneratorParameters parameters)
   at Microsoft.EntityFrameworkCore.Scaffolding.Internal.CSharpRuntimeModelCodeGenerator.CreateEntityType(IEntityType entityType, IndentedStringBuilder mainBuilder, IndentedStringBuilder methodBuilder, SortedSet`1 namespaces, String className, Boolean nullable)
   at Microsoft.EntityFrameworkCore.Scaffolding.Internal.CSharpRuntimeModelCodeGenerator.GenerateEntityType(IEntityType entityType, String namespace, String className, Boolean nullable)
   at Microsoft.EntityFrameworkCore.Scaffolding.Internal.CSharpRuntimeModelCodeGenerator.GenerateModel(IModel model, CompiledModelCodeGenerationOptions options)
   at Microsoft.EntityFrameworkCore.Scaffolding.Internal.CompiledModelScaffolder.ScaffoldModel(IModel model, String outputDir, CompiledModelCodeGenerationOptions options)
   at Microsoft.EntityFrameworkCore.Design.Internal.DbContextOperations.Optimize(String outputDir, String modelNamespace, String contextTypeName)
   at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OptimizeContextImpl(String outputDir, String modelNamespace, String contextType)
   at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OptimizeContext.<>c__DisplayClass0_0.<.ctor>b__0()
   at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.Execute(Action action)

It was working fine on 7.0.

[roji]

Thanks, I'll look at this and fix it fox 8.0.1.

[springy76]

Same problem here but I just don't have any uint anywhere in my models, only int32 and int64.

Of course there was an unseen uint in a mapped record:

public record DatabaseInfoEntity(
    [property: Key, Column("oid", TypeName = "oid")] uint ObjectId,
    [property: Column("datname")] string DbName,
    [property: Column("description")] string? Description)

Removed this one and now a compiled model gets created - but it doesn't compile due to private nested classes being referenced: https://github.com/npgsql/efcore.pg/issues/2972 (and I can't change the class as it comes from IdentityFramework: property DateTimeOffSet? LockoutEnd in user entity)