Hi all, I was wondering how I would handle aggregate roots that contain collections with alot of entities. Like: public class AggregateRoot { public ICollection<Child> Children { get; set; } // 10.000 entities } How would I query the child collection to get specific children? I am using Nhibernate btw. ...
Here's an example of what an Exclusivity Arc is (the green arc); what it's saying is that a Plane can have either Propellers or Jet Engines - but not both. In Barker ER notation, an exclusion constraint over two or more roles is shown as an “exclusive arc” connected to the roles with a small dot or circle. see http://www.o...
Hello, Similar questions have been asked before but not quite the same (unless I missed it) I want to pass IUserInfo class instance through my Service, Domain , Domain Events, Domain Event Handlers... Whats is the best way to do it. Should I Inject it using IoC by registering it against instance of Httpcontext.Current.session["Cu...
I need to fetch the domain name and path from the request to provide the following return values: domain1.com/default.aspx returns domain1.com/default.aspx domain1.com/ returns domain1.com/ domain1.com returns domain1.com At the moment every URL fetch function I try seems to return doma...
I am new to TDD and DDD and I have one simple question regarding static methods in general. Most of the gurus of TDD says in one word that static methods are bad (and that we should forget about creating tons of static utilities that we (um or I) used to make before as they are not testable. I can see why they are not testable ( a great ...
Hi all, in one of my project I have a Garage class. This class contains many collections, like Addresses, BankAccounts, Memberships, etc. All these collection classes have a validity. Meaning that an address can be valid in a period of time specified by a user. New addresses or bank accounts can be added, but the validity period is no...
I am building a DDD system and we have all the requirements on paper for the system already set. There is a disagreement on how we go about building our domain model that I need an opinion on. My preference is to take the requirements and sketch out a basic domain model with the outline for the classes, their properties and behaviors a...
I have seen this both ways. When writing a Repository, should the methoods be passed in a connection string or should the repositpry be "self-contained", in other words, know internally how to get to the database? In case it helps, my Repository is not true DDD, but is the Repository pattern surrounding methods that call Oracle SPs (that...
I'm looking for a Python (<3) validation API something like Java's Bean Validation or Spring validation. I'm not looking for a library that is limited to form validation, since I want to validate domain objects. Do you know a Python API for validating of domain objects? ...
I am building an application under DDD architecture, thus I have implemented rich domain objects that can also be entities. These entities can also have full access to (injected) repositories that can do add & remove operations on other objects/entities. So far, this all works without any problems. But can side effects for objects/entit...
I’ve been persuaded by Eric Evans’ book and am integrating DDD into my framework. All basic elements (services, repositories, bounded contexts, etc) have been implemented and now I’m looking for feedback on how to correctly integrate this. I have some business logic which has to be performed when an entity is created or modified. This e...
I am trying to use Domain Driven Development (DDD) for my new ASP.NET MVC2 project with Entity Framework 4. After doing some research I came up with the following layer conventions with each layer in its own class project: MyCompany.Domain public class User { //Contains all the properties for the user entity } ...
While developing my data model I didn't pay attention to the underlying database level. I encapsulated some logic in my domain classes' properties (example: method that counts order's profit). It all works well until I need to sort data. Sorting is a purely database feature (mainly because of performance i can't retrieve all rows from ta...
Assuming Stack Overflow domain problem and the following definition of events: UserRegistered(UserId, Name, Email) UserNameChanged(UserId, Name) QuestionAsked(UserId, QuestionId, Title, Question) Assuming the following state of event store (in the order of appearance): 1) UserRegistered(1, "John", "[email protected]") 2) UserNameChanged...