Entity Framework - Reuse Complex Type

Question

I have an Entity in Code First Entity framework that currently looks like this:

public class Entity
{
    // snip ...

    public string OriginalDepartment {         


        

Answer 1

It is supported out of box, you do not need to create two complex types.

You can also configure your complex types explicitely with model builder

modelBuilder.ComplexType<Location>();

To customize column names, you should configure them from parent entity configuration

public class Location
{
    public string Department { get; set; }
    public string Queue { get; set; }
}

public class MyEntity
{
    public int Id { get; set; }
    public Location Original { get; set; }
    public Location Current { get; set; }
}

public class MyDbContext : DbContext
{
    protected override void OnModelCreating(DbModelBuilder modelBuilder)
    {
        modelBuilder.ComplexType<Location>();

        modelBuilder.Entity<MyEntity>().Property(x => x.Current.Queue).HasColumnName("myCustomColumnName");
    }
}

This will map MyEntity.Current.Queue to myCustomName column