WORK IN PROGRESS

A small proof of concept C# project for Domain Driven Design and Event Sourcing. It was heavily influenced by the code here: http://www.jayway.com/2013/03/08/aggregates-event-sourcing-distilled/

Source was used as a demo for a talk: https://sway.com/QjcOHMKGvTUQ2qNT

• Uses CQRS so class for handling commands and read-only classes for querying
• A single method for handling commands. Uses reflection which reduces amount of boilerplate code needed
• Handling or commands and processing events does not use a giant if or case statement which is generally error prone (again due to reflection)
• Reflection uses a marker interface on commands to know what aggregate root to target: interface ITargetAggregate<T> where T : IAmAggregate
• Handle method on domain objects process commands. This is where validation is done. The Handle method returns a list of events that the domain raises due to that command. When events are processed by the Process method, there is no validation since these events have already happened and so must be processed.

Currently it is just an in-memory store. The web project uses ASP.NET Core RC1 so as long as you have that setup you should be good to go.