A small GraphQL proof-of-concept application. It explores the various capabilities of GraphQL in a minimal application.

Graph Dracula is built using a layered architecture. The core (written in C#) consists of a Dracula.Domain project, which defines the business entities. As it is mostly a CRUD application, this part is not very interesting. On top of the domain, we have Dracula.Repository, which takes care of the database interactions using EntityFrameworkCore. Finally, we have Dracula.Api which provides the GraphQL web interface using AspNetCore and Hot Chocolate.

For the client side, I created a vibe.d web site in dracula.site (written in D). It's a simple web server that serves semi static web pages made interactive with a little manual Javascript hacking. It communicates with Dracula.Api.

To persist the data, a simple off-the-shelf MSSQL Docker container is used.

Graph Dracula consists of three parts. Firstly, the database. To use the Docker container, simply type

docker-compose up

in the root of the project and the database should start. If you don't have Docker, simply edit the connection string in Dracula.Api/appsettings.json to the connection of your local SQL instance.

The GraphQL endpoint can be stated using

dotnet run --project Dracula.Api/Dracula.Api.csproj

from the root of the project. It requires the dotnet command line tool (DotNetCore 2.1) to run.

Finally, the client website can be started using

dub

from the dracula.site folder. I have dub version 1.15 and dmd (D compiler) version 2.086, but it should run with slightly older versions as well.

• The main website runs on http://localhost:8080/
• The GraphQL endpoint runs on http://localhost:5000/
• An interactive playground for writing manual GraphQL queries provided by Hot Chocolate runs on http://localhost:5000/playground/

"Graph" means "graaf" in Dutch. "Graaf" is the Dutch word for "Count".