Question

我不知道这种行为是设计的还是EF6中的错误，或者还有另一种方法可以做到这一点。有这种复杂的类型：

[ComplexType]
public partial class Company    
    public bool HasValue { get { return !string.IsNullOrEmpty(this.Name); } }

    [MaxLength(100)]
    public string Name { get; set; }

    [MaxLength(20)]
    public string PhoneNumber { get; set; }

    [MaxLength(128)]
    public string EmailAddress { get; set; }
}

我在这两个实体中重复使用它：

public partial class Customer
{
    public Customer ()
    {
        this.Company = new Company();       
    }

    [Key]
    public int IdCustomer { get; set; }

    [MaxLength(100)]
    [Required]
    public string FirstName { get; set; }

    [MaxLength(100)]
    [Required]
    public string LastName { get; set; }

    public Company Company { get; set; }

    public virtual AcademicInfo AcademicInfo { get; set; }
}


public partial class AcademicInfo
{       
    public AcademicInfo()
    {
        this.Organization = new Company();
    }       

    [Key, ForeignKey("Customer")]
    public int IdCustomer { get; set; }

    public Company Organization { get; set; }

    [MaxLength(100)]
    public string Subject { get; set; }

    [MaxLength(100)]
    public string Degree { get; set; }

    public virtual Customer Customer { get; set; }
}

dbcontext的OnModelCreating中的

（编辑：为了简单起见，我添加了之前省略的FK代码）：

protected override void OnModelCreating(DbModelBuilder modelBuilder)
{    
    modelBuilder.Conventions.Remove<PluralizingTableNameConvention>();

    // ... Other code here related to entities not related to the problem reported omitted to avoid confusion.

    modelBuilder.Entity<AcademicInfo>()
            .HasRequired(a => a.Customer)
            .WithOptional(c => c.AcademicInfo)
            .WillCascadeOnDelete(true);

    modelBuilder.Entity<Customer>()
            .Property(p => p.Company.Name)
            .HasColumnName("CompanyName")
            .IsOptional(); // CONFLICT HERE
    modelBuilder.Entity<Customer>()
            .Property(p => p.Company.EmailAddress)
            .HasColumnName("CompanyEmailAddress")
            .IsOptional();  //CONFLICT HERE
    modelBuilder.Entity<Customer>()
            .Property(p => p.Company.PhoneNumber)
            .HasColumnName("CompanyPhoneNumber")
            .IsOptional();

    modelBuilder.Entity<AcademicInfo>()
            .Property(a => a.Organization.Name)
            .HasColumnName("OrganizationName")
            .IsRequired(); // CONFLICT
    modelBuilder.Entity<AcademicInfo>()
            .Property(a => a.Organization.EmailAddress)
            .HasColumnName("OrganizationEmail")
            .IsRequired(); // CONFLICT
    modelBuilder.Entity<AcademicInfo>()
            .Property(a => a.Organization.PhoneNumber)
            .HasColumnName("OrganizationPhone")
            .IsOptional();
}

Add-Migration命令失败，并显示以下错误： 为“公司”类型的属性“名称”指定了冲突的配置设置： IsNullable =与IsNullable = True

的错误冲突

但是没有任何意义，因为我在AcademicInfo表中定义了不可为空的字段，在Customer表中定义了可空的字段。

Answer 1

这是一个老问题，但仍然适用于EF版本6.1.3。

根据this issue，行为是关于如何配置特定复杂类型的实体框架限制。

这是EF的限制，某些属性方面需要存储在C-Space中，而EF没有办法配置复杂类型的特定用法。因此，您只能指定不同的S-Space方面，如ColumnName或ColumnType

与IsNullable冲突的配置设置= true IsNullable = false重用ComplexType

1 个答案: