[英]Entity Framework TPH creating multiple ID columns
我有以下幾點:
class Employee {
[Key]
public int EmployeeID {get;set;}
public List<TimeSensitiveData> JobTitle {get;set;}
public List<TimeSensitiveData> Department {get;set;}
public List<TimeSensitiveData> OfficeLocation {get;set;}
}
abstract class TimeSensitiveData {
[Key]
public int TimeSensitiveDataID {get;set;}
public string Value1 {get;set;}
public DateTime Date {get;set;}
}
class JobTitle : TimeSensitiveData {}
class Department : TimeSensitiveData {}
class OfficeLocation : TimeSensitiveData {}
種子方法看起來像這樣:
seed () {
List<TimeSeriesData> oflc = new List<TimeSeriesData>();
TimeSeriesData oflc2 = new OfficeLocation();
oflc2.Value1 = "New York";
oflc.Add(oflc2);
List<TimeSeriesData> dpt = new List<TimeSeriesData>();
TimeSeriesData dpt2 = new Department();
dpt2.Value1 = "New York";
dpt.Add(dpt2);
List<TimeSeriesData> jt = new List<TimeSeriesData>();
TimeSeriesData jt2 = new JobTitle();
jt2.Value1 = "New York";
jt.Add(jt2);
var Employees = new List<Employee> {
new Employee{JobTitle=jt,Department=dpt,OfficeLocation=oflc},
}
}
當我為雇員添加數據庫種子時,它將創建一個雇員表和一個TimeSensitiveData表。 在TimeSensitiveData表中,有一個Discriminator列(我知道它在做什么),但也有多個Employee_EmployeeID列。 實際上,似乎為擴展TimeSensitiveData的每個復雜對象都創建了一個對象。
所以TimeSensitiveData表看起來像這樣
TimeSensitiveDataID Value1 Date Discriminator Employee_EmployeeID Employee_EmployeeID1 Employee_EmployeeID2
1 xx date JobTitle NULL NULL(or value) NULL
2
etc..
etc..
我不確定為什么會這樣,有什么想法嗎?
我應該使雇員模型中的列表不是TimeSensitiveData類型列表嗎? 它們應該是具體的類類型列表嗎?
[InverseProperty]部分修復了它
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