Question

i am working on a legacy enterprise database that uses multiple columns to retrieve a part number the sql we currently use checks for a part number and if the part number is null then checks for the child part number what would be the best way of combining this logic into a single ef model property (eg Product.PartNumber )

I would like this to be invisible as possible so that only PartNumber is visible externally to the data api

Answer 1

in theory couldnt you do something like this

public class Part
{ 
    public string PartNumber
    {
        get
        {
            return this.PartId ?? this.ChildPartId;
        }  
    }

    internal string PartId { get; set; }
    internal string ChildPartId { get; set; }
}



public class PartsContext : DbContext
{ 
    public DbSet<Part> Parts { get; set; }

    protected override void OnModelCreating(DbModelBuilder modelBuilder)
    {
        modelBuilder.Entity<Part>().Ignore(e => e.PartNumber);   
        base.OnModelCreating(modelBuilder);
    }
}

or is this still considered bad