2011-08-24 82 views
3

我在SaveChanges()方法中遇到以下來自EF的異常問題。實體框架4.1流利映射(關聯表)

違反了多重性約束。關係「CodeFirstNamespace.Person_Phones」的角色「Person_Phones_Source」具有多重性1或0..1。

我的映射似乎是正確的,因爲我可以選擇並通過連接正確地填充所有相關的對象。我已經包含了有關表格,映射和調用代碼的信息。任何幫助將不勝感激。

表:

人(personguid,名字,姓氏,等...)

Person_Phone(personguid,phoneguid,CreatedBy等)

電話(phoneguid,PHONENUMBER,等等......)

編輯:按要求這些是我的實體。爲了簡潔起見,我刪除了fixup代碼。代理生成被禁用。

public partial class Person 
{ 
    public virtual System.Guid PersonId { get; set;} 
    public virtual string LastName { get; set; } 
    public virtual string FirstName{ get; set; } 
    public virtual ObservableCollection<PersonPhoneAssociation> Phones {get;set;} 
} 

public partial class PersonPhoneAssociation 
{ 
    public virtual System.Guid PersonId {get;set;} 
    public virtual System.Guid PhoneId {get;set;} 
    public virtual string CreatedBy {get;set;} 
    public virtual Person Person {get;set;} 
    public virtual Phone Phone {get;set;} 
} 
public partial class Phone 
{ 
    public virtual System.Guid PhoneId { get; set; } 
    public virtual string PhoneNumber {get; set; } 
    public virtual ObservableCollection<PersonPhoneAssociation> People {get;set;} 
} 

public class PersonMap : EntityTypeConfiguration<Person> 
{ 
    public PersonMap() 
    { 
     // Primary Key 
     this.HasKey(t => t.PersonId); 

     // Properties 
     this.Property(t => t.LastName).IsRequired().HasMaxLength(64); 
     this.Property(t => t.FirstName).IsRequired().HasMaxLength(64); 

     // Table & Column Mappings 
     this.ToTable("Person"); 
     this.Property(t => t.PersonId).HasColumnName("personguid"); 
     this.Property(t => t.LastName).HasColumnName("lastname"); 
     this.Property(t => t.FirstName).HasColumnName("firstname"); 

     // Relationships 
     this.HasMany(i => i.Phones).WithRequired(t => t.Person).HasForeignKey(t => t.PersonId); 
    } 
} 
public class PhoneMap : EntityTypeConfiguration<Phone> 
{ 
    public PhoneMap() 
    { 
     // Primary Key 
     this.HasKey(t => t.PhoneId); 

     // Properties 

     // Table & Column Mappings 
     this.ToTable("Phone"); 
     this.Property(t => t.PhoneId).HasColumnName("phoneguid"); 
     this.Property(t => t.PhoneNumber).HasColumnName("phonenumber"); 
    } 
} 
public class PersonPhoneAssociationMap : EntityTypeConfiguration<PersonPhoneAssociation> 
{ 
    public PersonPhoneAssociationMap() 
    { 
     // Primary Key 
     this.HasKey(t => new { t.PersonId, t.PhoneId }); 

     // Properties 
     this.Property(t => t.PersonId).IsRequired(); 
     this.Property(t => t.PhoneId).IsRequired(); 
     this.Property(t => t.CreatedBy).HasMaxLength(64); 

     // Table & Column Mappings 
     this.ToTable("Person_Phone"); 
     this.Property(t => t.PersonId).HasColumnName("personguid"); 
     this.Property(t => t.PhoneId).HasColumnName("phoneguid"); 
     this.Property(t => t.CreatedBy).HasColumnName("CreatedBy"); 

     // Relationships 
     this.HasRequired(t => t.Person) 
      .WithMany(t => t.Phones) 
      .HasForeignKey(t => t.PersonId); 

     this.HasRequired(t => t.Phone) 
      .WithMany(t => t.People) 
      .HasForeignKey(d => d.PhoneId); 

    } 
} 

,並且調用代碼:

using (var context = new EnterpriseContext()) 
     { 
     System.Guid personId = new System.Guid("417B85E7-19C4-4C61-A9C2-627C2A0C5C85"); 
     var person = context.Set<Person>() 
      .Include(t => t.Phones.Select(p => p.Person)) 
      .Include(t => t.Phones.Select(p => p.Phone)) 
      .Where(p => p.PersonId == personId).FirstOrDefault(); 

     Phone phone = new Phone() { PhoneNumber = "8675309" }; 
     PersonPhoneAssociation pfa = new PersonPhoneAssociation() { Phone = phone }; 
     person.Phones.Add(pfa); 
     context.SaveChanges(); 
     } 
+0

也顯示您的實體。 –

+0

我已添加相關實體。 – RMCQUEEN

+0

你解決了這個問題嗎? –

回答

0

你有你的人與手機之間的表定義的中間連接表(Person_Phones)。問題是你試圖在Person和Person_Phones之間的關聯上定義一個外鍵 - PersonID不是該表的關鍵,因爲它有一個PersonID複合鍵PhoneID。

您可以嘗試從您的人員地圖(或至少HasForeignKey聲明)中刪除關係聲明