Details
-
Task
-
Status: Closed
-
Minor - P4
-
Resolution: Gone away
-
None
-
None
Description
Hi,
I would like to work with Domain Driven Design Tactical patterns, using MongoDb as the storage engine of my aggregates.
To ensure object encapsulation I need to provide internal scoped constructor (for internal object creation in my Domain layer), and public factories for extra domain layer object creation.
Example :
Aggregate
public class FlashInfo : AggregateRoot<FlashInfoId> |
{
|
public Information Text { get; private set; } |
public DateTime ActivationDate { get; private set; } |
public DateTime? LastModified { get; private set; } |
public User CreatedBy { get; private set; } |
public User ModifiedBy { get; private set; } |
|
// ... |
|
|
}
|
Value Object
public class Information : Value<Information> |
{
|
public string Text { get; } // Satisfy the serialization requirements |
internal Information(string text)
|
{
|
Text = text;
|
}
|
|
|
public static implicit operator string(Information info) => info.Text; |
|
public static Information CreateInformation(string text) |
{
|
CheckValidity(text);
|
return new Information(text); |
}
|
|
|
private static void CheckValidity(string text) |
{
|
if (string.IsNullOrEmpty(text)) |
throw new InformationTextIsEmptyException("The information text must not be null or empty"); |
|
|
if (text.Length > 100) |
throw new ArgumentOutOfRangeException(nameof(text), "The information text cannot be longer that 100 characters"); |
}
|
}
|
