Architecting Modern Java EE Applications

Factories

The motivation behind Domain-Driven Design factories is that creating domain objects can require logic and constraints that are more complex than just calling a constructor. Creation of consistent domain objects may need to perform validations or complex processes. Therefore, we define the creation logic in specific methods or classes that encapsulate this logic from the rest of the domain.

This is the same motivation behind the abstract factory and factory method design patterns discussed earlier. Therefore, the same realization using CDI features hold true here as well. The CDI specification is in fact a factory functionality.

Domain object factories can also be implemented as methods being part of another domain model class such ...