Domain Modeling

How to model the domain

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