C＃，實體框架，TPH

Question

我有一個TPH映射的問題。 這裏是類：

摘要服務（基類）

[Table("Services")] 
public abstract class AbstractService : IAuditedObject 
{ 
    public int Id { get; set; } 

    [DisplayName("Receiver Site")] 
    public int? TargetSiteId { get; set; } 
    [DisplayName("Receiver Site")] 
    public virtual Site TargetSite { get; set; } 

    [DisplayName("Start Date")] 
    public PartialDate StartDate { get; set; } 
    [DisplayName("End Date")] 
    public PartialDate EndDate { get; set; } 

    [DisplayName("Study")] 
    public int? StudyId { get; set; } 
    [DisplayName("Study")] 
    public virtual Study Study { get; set; } 
} 

混凝土服務

public class AssociatedStaffService : AbstractService 
{ 
    [DisplayName("Person")] 
    [Required] 
    public int? SourcePersonId { get; set; } 
    [DisplayName("Person")] 
    public virtual Person SourcePerson { get; set; } 

    [DisplayName("Service")] 
    [Required] 
    public int? RoleId { get; set; } 
    [DisplayName("Service")] 
    public virtual AssociatedStaffServiceCLI Role { get; set; } 

    [DisplayName("Department")] 
    public string Department { get; set; } 

    public bool IsActive() 
    { 
     return this.SourcePerson != null && this.TargetSite != null && this.SourcePerson.IsActive() && this.TargetSite.IsActive() && this.Study != null && (this.EndDate == null || this.EndDate.Date == null || this.EndDate.Date > DateTime.Now); 
    } 
} 

public class EthicCommitteeService : AbstractService 
{ 
    [DisplayName("Site")] 
    [Required] 
    public int? SourceSiteId { get; set; } 
    [DisplayName("Site")] 
    public virtual Site SourceSite { get; set; } 

    [DisplayName("Central")] 
    public bool? IsCentral { get; set; } 

    public bool IsActive() 
    { 
     return this.Study != null && this.TargetSite != null && this.SourceSite != null && this.TargetSite.IsActive() && this.SourceSite.IsActive() && (this.EndDate == null || this.EndDate.Date == null || this.EndDate.Date > DateTime.Now); 
    } 
} 

public class ParticipatingService : AbstractService 
{ 
    public const string AUTHORIZATION_DATE = "AuthorizationDate"; 
    public const string IS_NATIONAL_COORDINATOR = "IsNationalCoordinator"; 

    [DisplayName("Person")] 
    [Required] 
    public int? SourcePersonId { get; set; } 
    [DisplayName("Person")] 
    public virtual Person SourcePerson { get; set; } 

    [DisplayName("Service")] 
    [Required] 
    public int? RoleId { get; set; } 
    [DisplayName("Service")] 
    public virtual ParticipatingServiceCLI Role { get; set; } 

    [DisplayName("Department")] 
    public string Department { get; set; } 

    public int? RegInvestigatorFormId { get; set; } 
    public PartialDate AuthorizationDate { get; set; } 
    public bool? IsNationalCoordinator { get; set; } 

    public bool IsActive() 
    { 
     return this.SourcePerson != null && this.TargetSite != null && this.SourcePerson.IsActive() && this.TargetSite.IsActive() && this.Study != null && (this.EndDate == null || this.EndDate.Date == null || this.EndDate.Date > DateTime.Now); 
    } 
} 

public class ExternalService : AbstractService 
{ 
    [DisplayName("Person")] 
    [Required] 
    public int? SourcePersonId { get; set; } 
    [DisplayName("Person")] 
    public virtual Person SourcePerson { get; set; } 

    [DisplayName("Service")] 
    [Required] 
    public int RoleId { get; set; } 
    [DisplayName("Service")] 
    public virtual ExternalServiceCLI Role { get; set; } 

    [DisplayName("Department")] 
    public string Department { get; set; } 

    public bool IsActive() 
    { 
     return this.SourcePerson != null && this.TargetSite != null && this.SourcePerson.IsActive() && this.TargetSite.IsActive() && this.Study != null && (this.EndDate == null || this.EndDate.Date == null || this.EndDate.Date > DateTime.Now); 
    } 
} 

public class StudyTeamService : AbstractService 
{ 
    [DisplayName("Person")] 
    [Required] 
    public int? SourcePersonId { get; set; } 
    [DisplayName("Person")] 
    public virtual Person SourcePerson { get; set; } 

    [DisplayName("Service")] 
    [Required] 
    public int? RoleId { get; set; } 
    [DisplayName("Service")] 
    public virtual StudyTeamServiceCLI Role { get; set; } 

    [DisplayName("Department")] 
    public string Department { get; set; } 

    public bool IsActive() 
    { 
     return this.SourcePerson != null && this.TargetSite != null && this.SourcePerson.IsActive() && this.TargetSite.IsActive() && this.Study != null && (this.EndDate == null || this.EndDate.Date == null || this.EndDate.Date > DateTime.Now); 
    } 
} 

我總是得到以下錯誤：

--- ERROR: One or more validation errors were detected during model generation:

System.Data.Edm.EdmProperty: Name: Each property name in a type must be unique. Property name 'StartDate' is already defined. 
    System.Data.Edm.EdmProperty: Name: Each property name in a type must be unique. Property name 'EndDate' is already defined. --- 

這裏是堆棧跟蹤：

Unhandled Exception: System.Data.Entity.ModelConfiguration.ModelValidationExcept ion: One or more validation errors were detected during model generation:

System.Data.Edm.EdmProperty: Name: Each property name in a type must be unique. Property name 'StartDate' is already defined. 
    System.Data.Edm.EdmProperty: Name: Each property name in a type must be unique. Property name 'EndDate' is already defined. 

at Prisma.Loader.PrismaLoader.Init() in C:\Projects_PrismaLoader\Prisma.Load er\PrismaLoader.cs:line 95 at Prisma.Loader.PrismaLoader.Load(Boolean quick) in C:\Projects_PrismaLoade r\Prisma.Loader\PrismaLoader.cs:line 32 at Prisma.Loader.Program.Main(String[] args) in C:\Projects_PrismaLoader\Pri sma.Loader\Program.cs:line 113

堆棧跟蹤是不是在這種情況下，真正有用的（似乎...）

有誰有，我犯了一個錯誤的想法？我一直在尋找一天...

Answer 1

解決

看來這個問題是PartialDate類。它必須用[ComplexType]註釋進行註釋。

Answer 2

我相信你需要使StartDate和EndDate虛擬？ Edm試圖覆蓋功能，但是因爲它們被封閉了，所以它不能覆蓋它們，所以它在IL中複製它們？