与 IsNullable = true IsNullable = false 重用 ComplexType 冲突的配置设置
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【中文标题】与 IsNullable = true IsNullable = false 重用 ComplexType 冲突的配置设置【英文标题】:Conflicting configuration settings with IsNullable = true IsNullable = false reusing ComplexType 【发布时间】:2017-03-31 11:18:15 【问题描述】:我不知道这种行为是设计使然,还是 EF6 中的错误,或者还有其他方法可以做到这一点。拥有这种复杂类型:
[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;
在 dbcontext 的 OnModelCreating 中(编辑:为简单起见,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 命令失败并出现以下错误: 为“公司”类型的属性“名称”指定了冲突的配置设置: IsNullable = False 与 IsNullable = True 冲突
但这没有任何意义,因为我在 AcademicInfo 表中定义了不可为空且在 Customer 表中可为空的字段。
【问题讨论】:
HasColumnName() 定义属性将在数据库中定位的列。您正在尝试为相同的列定义不同的名称和可为空的规则。默认情况下,FK 应该是可空的,因此您需要使用 HasOne() 和 WithOne() 方法来实现不可空 @james,它们不是相同的列,因为在数据库中,可为空的列在 Customer 表中定义,不可为空的列在 AcademicInfo 表中。该问题不涉及 FK,因此我删除了与之相关的代码: modelBuilder.Entity() .HasRequired(a => a.Customer) .WithOptional(c => c.AcademicInfo) .WillCascadeOnDelete(true) ; 【参考方案1】:这是一个老问题,但对于 EF 版本 6.1.3 仍然有效。
根据this issue,该行为是实体框架对如何配置特定复杂类型的限制。
这是 EF 的限制,一些属性方面需要存储在 C-Space 中,并且 EF 没有配置复杂类型的特定用法的方法。所以你只能指定不同的 S-Space facets,比如 ColumnName 或 ColumnType
【讨论】:
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