Documentation

Domain Model

Modeling Aggregates, Entities and Value Objects

Complex Heart allows you to model your domain Aggregates, Entities, and Value Objects using a set of traits. Great, but why traits and not classes? Well, sometimes you have some kind of inheritance in your classes. Being forced to use a certain base class is too invasive and personally, I don't like it. By using a set of traits and interfaces you have all the functionality you need without compromising the essence of your own domain.

The available traits are:

• `HasAttributes` Provide some functionality to manage attributes.
• `HasEquality` Provide functionality to handle equality between objects.
• `HasInvariants` Allow invariant checking on instantiation (Guard Clause).
• `HasIdentity` Define the Entity/Aggregate identity.
• `HasDomainEvents` Provide domain event management.

On top of those base traits Complex Heart provide ready to use compositions:

• `IsModel` composed by `HasAttributes` and `HasInvariants`.
• `IsValueObject` composed by `IsModel` and `HasEquality`.
• `IsEntity` composed by `IsModel`, `HasIdentity`, `HasEquality`.
• `IsAggregate` composed by `IsEntity`, `HasDomainEvents`.

For more information please check the wiki.