Temporal property optimization with Entity Framework

Question

I want to implement temporal properties using an approach similar to that described here, using Entity Framework code-first for database storage.

I want it optimized for getting the current value and have lazy loading for the history, but I don't want to have to add boilerplate code in the parent entity for every usage, as is the approach in the link above.

At the moment I have something like the code below, which by convention results in the database schema as shown below the code.

This will function as I need, but for performance reasons I'd like to avoid the join it requires to get the current property value (i.e. I want to move the TemporalStrings.CurrentValue DB column to Entities.Name instead).

If I try

modelBuilder.Entity<Entity>().Property(o => o.Name.CurrentValue).HasColumnName("Name");

it doesn't work. I get an exception like

The type 'ConsoleApplication1.TemporalString' has already been configured as an entity type. It cannot be reconfigured as a complex type.

Is there some way I can achieve this mapping, or is there a better approach for achieving this functionality?

Code:

public class TemporalString
{
    public int Id { get; set; }
    public string CurrentValue { get; set; } // Setter would be customized to append to History.
    public virtual List<TemporalStringValue> History { get; set; }
    // Other methods such as string ValueAt(DateTime) would exist.
}

public class TemporalStringValue
{
    public int Id { get; set; }
    public DateTime EffectiveFrom { get; set; }
    public string Value { get; set; }
}

public class Entity
{
    public int Id { get; set; }
    public virtual TemporalString Name { get; set; }
}

public class TestDbContext : DbContext
{
    public DbSet<Entity> Entities { get; set; }
    public DbSet<TemporalString> TemporalStrings { get; set; }
    public DbSet<TemporalStringValue> TemporalStringValues { get; set; }
    protected override void OnModelCreating(DbModelBuilder modelBuilder)
    {
        //modelBuilder.Entity<Entity>().Property(o => o.Name.CurrentValue).HasColumnName("Name");
        // TODO: Map DB column TemporalStrings.CurrentValue to DB column Entities.Name?
    }
}

internal class Program
{
    private static void Main(string[] args)
    {
        Database.SetInitializer(new DropCreateDatabaseIfModelChanges<TestDbContext>());
        using (var context = new TestDbContext())
        {
            var entity = new Entity
                             {
                                 Name = new TemporalString
                                            {
                                                CurrentValue = "Current Value",
                                                History = new List<TemporalStringValue>
                                                              {
                                                                  new TemporalStringValue
                                                                      {
                                                                          EffectiveFrom = DateTime.UtcNow,
                                                                          Value = "Current Value"
                                                                      },
                                                                  new TemporalStringValue
                                                                      {
                                                                          EffectiveFrom = DateTime.UtcNow.AddMonths(-1),
                                                                          Value = "Old Value"
                                                                      },
                                                                  new TemporalStringValue
                                                                      {
                                                                          EffectiveFrom = DateTime.UtcNow.AddMonths(-2),
                                                                          Value = "Older Value"
                                                                      }
                                                              }
                                            }
                             };
            context.Entities.Add(entity);
            context.SaveChanges();
        }
        Console.Write("Done.");
        Console.ReadKey();
    }
}

Resulting schema:

Entities
(PK) Id
(FK) Name_Id (references TemporalStrings.Id)

TemporalStrings
(PK) Id
     CurrentValue

TemporalStringValues
(PK) Id
     EffectiveFrom
     Value
(FK) TemporalString_Id

Desired schema:

Entities
(PK) Id
(FK) Name_Id (references TemporalStrings.Id)
     Name (formerly TemporalStrings.CurrentValue)

TemporalStrings
(PK) Id

TemporalStringValues
(no change)