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Type:
Task
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Resolution: Gone away
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Priority:
Minor - P4
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None
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Affects Version/s: None
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Component/s: BSON
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");
}
}
