Excluding the default Id primary key from an Entity....

Hi,

I have the following structure defined for my entities:

/// <summary>
///     Base class for all entities defined in the system. This allows for the following
///     COMMON features:
///     - Primary key "Id" of type long
///     - Auditing which adds Date & User information for creation and update
/// </summary>
public class CcaEntityCommon : AuditedEntity<long>
{
}

/// <summary>
///     Extends the common functionality by adding the ability to mark a record as deleted rather than
///     deleting it from the database. Unless there is a reason not to mark an entity as a soft delete
///     then all entities should descend from this class.
/// </summary>
public class CcaEntityBase : CcaEntityCommon, ISoftDelete
{
    #region Implementation of ISoftDelete

    /// <summary>
    ///     Used to mark an Entity as 'Deleted'.
    /// </summary>
    public bool IsDeleted { get; set; }

    #endregion
}

And ultimately a table defined as:

[Table(“ContractorsEmployees”, Schema = “dbo”)] public class ContractorEmployeeTableModel : CcaEntityBase { #region Public Members

    public ContractorTableModel Contractor { get; set; }

    [Key, Column(Order = 1)]
    [ForeignKey("Contractor")]
    public long ContractorId { get; set; }

    public EmployeeTableModel Employee { get; set; }

    [Key, Column(Order = 2)]
    [ForeignKey("Employee")]
    public long EmployeeId { get; set; }

    #endregion
}

However in this particular case the primary key is ContractorId AND EmployeeId and I don’t need the Id key. So how do I exclude it in ContractorEmployeeTableModel? Can I do it with a data annotation? Or fluent API? Or do I have to have a “different” inheritance hierachy for tables that have compound keys?

[hikalkan]

Can you map Id to your primary key? Even if their name different, you can override Id and add a [Column(“YourPkName”)] attribute to change it.

[sohaibjaved44]

Yes did the same and its good solution. thanks. I’m wondering why I couldnt think that way 👍