EF CF:遗留数据库的复杂类型

Question

我成功映射了我的复杂类型,如下所示:

modelBuilder
     .ComplexType<Name>()
     .Property(name => name.First)
     .HasColumnName("firstNameColumn");

modelBuilder
     .ComplexType<Name>()
     .Property(name => name.Last)
     .HasColumnName("lastNameColumn");

到现在为止还挺好.但请注意,我们没有指定任何实体类型.如果我们想要为具有列"firstN"和"lastN"的表映射相同的Complext类型,该怎么办？我尝试了EntityTypeConfiguration <>但是不允许在那里指定复杂类型.最后,看起来complexTypes是全局定义的.

Answer 1

您还可以在实体级别自定义复杂类型列名称,如下所示:

public class User
{
    public int UserId { get; set; }
    public Name NameInfo { get; set; }
}

public class Customer
{
    public int CustomerId { get; set; }
    public Name NameInfo { get; set; }
}

[ComplexType]
public class Name
{
    public string First { get; set; }
    public string Last { get; set; }
}

public class Context : DbContext
{
    public DbSet<User> Users { get; set; }
    public DbSet<Customer> Customers { get; set; }

    protected override void OnModelCreating(DbModelBuilder modelBuilder)
    {
        modelBuilder.ComplexType<Name>()
                    .Property(name => name.First)
                    .HasColumnName("firstNameColumn");

        modelBuilder.ComplexType<Name>()
                    .Property(name => name.Last)
                    .HasColumnName("lastNameColumn");

        // Here is how can customize the column names at the entity level:
        modelBuilder.Entity<Customer>().Property(u => u.NameInfo.First)
                                       .HasColumnName("firstN");

        modelBuilder.Entity<Customer>().Property(u => u.NameInfo.Last)
                                       .HasColumnName("lastN");
    }
}

结果模式将是:

在这里你可以找到另一个例子.