Question

我真的不知道如何更好地说出标题，所以我很抱歉任何不正确之处。这是我的问题：

我有以下实体：

public sealed class AppUser: DomainEntityBase
{

    public bool ExternalLoginsEnabled { get; }
    public string FirstName { get; set; }
    public string LastName { get; set; }
    public string Username { get; set; }
    public Email Email { get; set; }

    public virtual string PasswordHash { get; set; }
    public virtual string SecurityStamp { get; set; }

}

和

public sealed class Email
{
    public string EmailAddress { get; }

    public Email(string email)
    {
        try
        {
            EmailAddress = new MailAddress(email).Address;
        }
        catch (FormatException)
        {
           //omitted for brevity
        }
    }
}

我的问题是，在代码级别，我真的希望将电子邮件（以及其他几个我没有放在这里）作为类来对待，因为他们将拥有验证器等（我正试图将其移至适当的DDD）但在数据库级别，我只需要将电子邮件存储为字符串。

问题：使用流畅的API，我将如何配置这种关系？

目前我有

public class AppUserConfiguration:EntityConfigurationBase<AppUser>
    {
        /// <summary>
        /// Initializes a new instance of the <see cref="AppUserConfiguration"/> class.
        /// </summary>
        public AppUserConfiguration()
        {

            ToTable("AppUser");

            Property(x => x.PasswordHash).IsMaxLength().IsOptional();
            Property(x => x.ExternalLoginsEnabled).IsRequired();
            Property(x => x.SecurityStamp).IsMaxLength().IsOptional();

            Property(x => x.Username).HasMaxLength(256).IsRequired();
           ...
        }
    }

Answer 1

在OnModelCreating中，定义复杂类型：

protected sealed override void OnModelCreating(DbModelBuilder modelBuilder)
{
modelBuilder.ComplexType<EMail>() 
    .Property(t => t.EmailAddress) 
    .HasMaxLength(255);

}

然后在你的配置中：

...

public AppUserConfiguration()
        {

            ToTable("AppUser");

            Property(x => x.PasswordHash).IsMaxLength().IsOptional();
            Property(x => x.ExternalLoginsEnabled).IsRequired();
            Property(x => x.SecurityStamp).IsMaxLength().IsOptional();
            Property(x => x.Email.EMailAddress).IsOptional();
            Property(x => x.Username).HasMaxLength(256).IsRequired();
           ...
        }

使用Fluent API在EF6中自定义类型映射

1 个答案: