The Role of Dependency Injection
Explore how dependency injection plays a crucial role in Hexagonal Architecture by managing dependencies between application layers and adapters. Understand how it helps maintain clean separation, enhances testability, and supports inversion of control for web and persistence adapters.
We'll cover the following...
We'll cover the following...
The package structure described previously goes a long way towards a Clean Architecture, but an essential requirement of such an architecture is that the application layer does not have dependencies to the incoming and outgoing adapters, as we have learned in the chapter “Inverting Dependencies”.
For incoming adapters like our web adapter, this is easy because the control flow points in the same direction as the dependency between adapter and domain code. ...