Clean Architecture

To demonstrate the Clean Architecture, we've adapted one of our most common three layer projects. Here we pass data from the Data Access layer to the Presentation Layer.

Solution Structure

The Clean Architecture differs from the Three Layer in the fact that is built around the core of the Domain and Application projects. An Data Access layer is created apart from the core, making it, via abstractions and the Inversion of Control Principle, interchangeable from the core. A traditional three layer would have to change with the core, to replace a database. Commands and Queries, following the CQRS Pattern, gather and send data to the Data Access layer.

In this example Persistence is the implementation of a Infrastructure project. Following the pattern of references, an other project referencing a outside source of data can be created.

classDiagram
	Application-->Domain
	Persistance-->Application
	Presentation-->Application
	Presentation-->Persistance
	
	class Domain{
		- EntityModel
		- Testing per Entity
	}
	
	class Persistance{
		- DbContext
		- DatabaseConfiguration
		- DatabaseInitializer
	}
	
	class Application{
		- Commands and Queries
		- ViewMdoels
		- Interface from DbContext
	}
	
	class Presentation{
		- Means of Presentation
		- Service executing the Query or Command
	}

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