> 2 InverseProperties gives: The convention invocations have reached the recursion limit. This is likely an issue in EF Core, please report it.

[Wouter8]

I am trying to setup multiple entities with inheritance. See class definitions (hiding irrelevant properties):

public abstract class PartialAnswer { 
        public int AnswerId { get; set; }
        public virtual Answer Answer { get; set; }
}
public class PartialSortedAnswer : PartialAnswer { }
public class PartialUnsortedAnswer : PartialAnswer { }
public class PartialRepeatingSortedAnswer : PartialSortedAnswer { }
public class PartialRepeatingUnsortedAnswer : PartialUnsortedAnswer { }

public abstract class Answer { }
public class MultipleAnswersUnsorted : Answer {
        public virtual ICollection<Partials.PartialUnsortedAnswer> Answers { get; set; }
}
public class MultipleAnswersSorted : Answer {
        public virtual IEnumerable<Partials.PartialSortedAnswer> Answers { get; set; }
}
public class MultipleAnswersRepeatingUnsorted : Answer {
        public virtual IEnumerable<Partials.PartialRepeatingUnsortedAnswer> Answers { get; set; }
}
public class MultipleAnswersRepeatingSorted : Answer
{
        public virtual IEnumerable<Partials.PartialRepeatingSortedAnswer> Answers { get; set; }
}

When creating a migration with these classes the PartialAnswers table gets 4 columns which are not needed.

• MultipleAnswersRepeatingUnsortedId
• MultipleAnswersRepeatingSortedId
• MultipleAnswersUnsortedId
• MultipleAnswersSortedId

I want them to all use the column AnswerId which is already part of the abstract class PartialAnswer. I found out that the columns come from the lists in the classed derived from Answer (SO). When adding the InverseProperty annotation I can specify that AnswerId should be used. Sadly I can only do this for 2 out of the 4 (and more coming) classes.

One example for one of the classes using InverseProperty:

public class MultipleAnswersUnsorted : Answer
{
        [InverseProperty("Answer")]
        public virtual ICollection<Partials.PartialUnsortedAnswer> Answers { get; set; }
}

When adding the property to a third class inheriting from Answer the migration fails and gives this error (It doesn't matter which classes I choose. It just limits at 2):

Exception message: The convention invocations have reached the recursion limit. This is likely an issue in EF Core, please report it.
Stack trace:
System.InvalidOperationException: The convention invocations have reached the recursion limit. This is likely an issue in EF Core, please report it.
   at Microsoft.EntityFrameworkCore.Metadata.Conventions.Internal.ConventionDispatcher.ConventionBatch.Run()
   at Microsoft.EntityFrameworkCore.Metadata.Conventions.Internal.ConventionDispatcher.ConventionBatch.Dispose()
   at Microsoft.EntityFrameworkCore.Metadata.Internal.InternalModelBuilder.Entity(TypeIdentity& type, ConfigurationSource configurationSource, Boolean allowOwned, Boolean throwOnQuery)
   at Microsoft.EntityFrameworkCore.Metadata.Internal.InternalModelBuilder.Entity(Type type, ConfigurationSource configurationSource, Boolean allowOwned, Boolean throwOnQuery)
   at Microsoft.EntityFrameworkCore.ModelBuilder.Entity[TEntity]()
   at QuizOrganizerAPI.Models.Context.OnModelCreating(ModelBuilder builder) in D:\Documents\Quiz_Organizer\quiz-organizer-api\Models\Context.cs:line 95
   at Microsoft.EntityFrameworkCore.Infrastructure.ModelCustomizer.Customize(ModelBuilder modelBuilder, DbContext context)
   at Microsoft.EntityFrameworkCore.Infrastructure.RelationalModelCustomizer.Customize(ModelBuilder modelBuilder, DbContext context)
   at Microsoft.EntityFrameworkCore.Infrastructure.ModelSource.CreateModel(DbContext context, IConventionSetBuilder conventionSetBuilder, IModelValidator validator)
   at Microsoft.EntityFrameworkCore.Infrastructure.ModelSource.<>c__DisplayClass5_0.<GetModel>b__1()
   at System.Lazy`1.ViaFactory(LazyThreadSafetyMode mode)
   at System.Lazy`1.ExecutionAndPublication(LazyHelper executionAndPublication, Boolean useDefaultConstructor)
   at System.Lazy`1.CreateValue()
   at Microsoft.EntityFrameworkCore.Infrastructure.ModelSource.GetModel(DbContext context, IConventionSetBuilder conventionSetBuilder, IModelValidator validator)
   at Microsoft.EntityFrameworkCore.Internal.DbContextServices.CreateModel()
   at Microsoft.EntityFrameworkCore.Internal.DbContextServices.get_Model()
   at Microsoft.EntityFrameworkCore.Infrastructure.EntityFrameworkServicesBuilder.<>c.<TryAddCoreServices>b__7_2(IServiceProvider p)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitFactory(FactoryCallSite factoryCallSite, ServiceProviderEngineScope scope)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSite(IServiceCallSite callSite, TArgument argument)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitScoped(ScopedCallSite scopedCallSite, ServiceProviderEngineScope scope)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSite(IServiceCallSite callSite, TArgument argument)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitConstructor(ConstructorCallSite constructorCallSite, ServiceProviderEngineScope scope)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSite(IServiceCallSite callSite, TArgument argument)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitScoped(ScopedCallSite scopedCallSite, ServiceProviderEngineScope scope)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSite(IServiceCallSite callSite, TArgument argument)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.DynamicServiceProviderEngine.<>c__DisplayClass1_0.<RealizeService>b__0(ServiceProviderEngineScope scope)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.ServiceProviderEngine.GetService(Type serviceType, ServiceProviderEngineScope serviceProviderEngineScope)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.ServiceProviderEngineScope.GetService(Type serviceType)
   at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService(IServiceProvider provider, Type serviceType)
   at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService[T](IServiceProvider provider)
   at Microsoft.EntityFrameworkCore.DbContext.get_DbContextDependencies()
   at Microsoft.EntityFrameworkCore.DbContext.get_InternalServiceProvider()
   at Microsoft.EntityFrameworkCore.DbContext.Microsoft.EntityFrameworkCore.Infrastructure.IInfrastructure<System.IServiceProvider>.get_Instance()
   at Microsoft.EntityFrameworkCore.Internal.InternalAccessorExtensions.GetService[TService](IInfrastructure`1 accessor)
   at Microsoft.EntityFrameworkCore.Infrastructure.AccessorExtensions.GetService[TService](IInfrastructure`1 accessor)
   at Microsoft.EntityFrameworkCore.Design.Internal.DbContextOperations.CreateContext(Func`1 factory)
   at Microsoft.EntityFrameworkCore.Design.Internal.DbContextOperations.CreateContext(String contextType)
   at Microsoft.EntityFrameworkCore.Design.Internal.MigrationsOperations.RemoveMigration(String contextType, Boolean force)
   at Microsoft.EntityFrameworkCore.Design.OperationExecutor.RemoveMigrationImpl(String contextType, Boolean force)
   at Microsoft.EntityFrameworkCore.Design.OperationExecutor.RemoveMigration.<>c__DisplayClass0_1.<.ctor>b__0()
   at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.<>c__DisplayClass3_0`1.<Execute>b__0()
   at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.Execute(Action action)

[ajcvickers]

@Wouter8 Which release of EF Core are you using?

[Wouter8]

Looks like it's under Microsoft.AspNetCore.App: EntityFrameworkCore (2.1.1)

Edit: currently updating, I'll let you know if it fixes the issue in a couple of minutes @ajcvickers.

[Wouter8]

@ajcvickers updated to 2.2.0. Getting the same error when adding the InverseProperty to more than 2 of these classes.