Question

System.Data.SqlClient.SqlException：INSERT语句与FOREIGN KEY约束“FK_dbo.employee_entity_dbo.person_entity_id”冲突。冲突发生在数据库“EFEmployeeEntityModelContext”，表“dbo.person_entity”，列'id'。

因此，当我尝试插入员工实体时，我收到此错误，但我不确定原因。我还有一个人实体类，它与雇员实体有一对一或零关系。所以每个员工都是一个人，但每个人不一定是员工。为了建立这种关系，在我的员工实体类中，我有一个PersonID属性。因此，此PersonID应该是与person实体的Id主键相关的外键。这是我的员工实体类：

[Table("employee_entity")]
public class EFEmployee : EFBusinessEntity
{
    [Column("office_id")]
    public Guid OfficeID { get; set; }

    [Column("person_id")]
    //[Index("ix_employee_person_id", IsUnique=true)]
    public Guid PersonID { get; set; }

    [Column("hire_date")]
    public DateTime HireDate { get; set; }

    [Column("job_title")]
    [Required]
    public byte[] JobTitle { get; set; }

    [Column("salary")]
    public int Salary { get; set; }

    [Column("certifications")]
    public byte[] Certifications { get; set; }

    [Column("vacation_time")]
    public int VacationTime { get; set; }

    [Column("sick_time")]
    public int SickTime { get; set; }

    public virtual EFOffice Office { get; set; }

    public virtual EFPerson Identity { get; set; }

    public virtual EFEmployee ReportingTo { get; set; }

    public EFEmployee(Guid id, Guid tenantId, Guid officeID, Guid personID, DateTime hire, byte[] titles, int salary, byte[] certifications, int vacationTime, int sickTime)
    {
        this.Id = id;
        this.TenantId = tenantId;
        this.OfficeID = officeID;
        this.PersonID = personID;
        this.HireDate = hire;
        this.JobTitle = titles;
        this.Salary = salary;
        this.Certifications = certifications;
        this.SickTime = sickTime;
        this.VacationTime = vacationTime;
    }
}

以下是Person实体的类：

[Table("person_entity")]
public class EFPerson : EFBusinessEntity
{
    [Column("first_name")]
    [StringLength(50)]
    public string FirstName { get; set; }

    [Column("last_name")]
    [StringLength(50)]
    public string LastName { get; set; }

    [Column("phone_num")]
    public uint? PhoneNum { get; set; }

    [Column("date_of_birth")]
    public DateTime DateOfBirth { get; set; }

    public virtual EFEmployee Employee { get; set; }

    public EFPerson(Guid id, Guid tenantId, string firstName, string lastName, DateTime dob)
    {
        this.Id = id;
        this.TenantId = tenantId;
        this.FirstName = firstName;
        this.LastName = lastName;
        this.DateOfBirth = dob;
    }
}

这是基础实体类：

[Table("business_entity")]
public abstract class EFBusinessEntity : IBusinessEntity
{
    [Column("tenant_id")]
    public Guid TenantId
    {
        get;
        set;
    }

    [Column("id")]
    [Key]
    public Guid Id
    {
        get;
        set;      
    }
}

以下是我正在运行的测试用例，它为插入员工提供了错误：

public void TestInsertEmployee1()
{
    InitializeDatabase();

    EFEmployee testEmployee = InitializeEmployee1();
    EFRepo.Insert<EFEmployee>(testEmployee);

    EFEmployee randomEmployee = EFRepo.GetById<EFEmployee>(testEmployee.Id);
    Debug.Assert(testEmployee.Equals(randomEmployee));
}

InitializeEmployee1（）创建一个测试员工，当我初始化它时，我确保它使用与调用InitializePerson1（）时相同的PersonID。我通过调用

来确保这一点

Debug.WriteLine(testEmployee.PersonID);

然后我将它与Microsoft SQL Server中person_entity表中的Id的人物进行比较。如果两个ID匹配，那么问题是什么？

此外，我使用流畅的API在数据库上下文类的OnModelCreating方法中进行映射：

modelBuilder.Entity<EFEmployee>().HasRequired(t => t.Office).WithMany(u => u.Employees).HasForeignKey(d => d.OfficeID);

modelBuilder.Entity<EFEmployee>().HasRequired(t => t.Identity).WithOptional(u => u.Employee);

INSERT语句与代码优先实体框架的FOREIGN KEY约束冲突

0 个答案: