[The post is out of date, please read the update]

I previously wrote about an implementation of a GraphQL server in Java.  That post is showing age because the code is part of a kata project and constantly evolves.

A Concise Example

So, I’ve created a new concise example in GitHub that exemplifies using:

• Ratpack for the server
• GraphQL Java for the GraphQL engine
• GraphQL Annotations for Java for the schema creation

The example is just the code needed to manage a list of companies in memory. It implements basic CRUD operations but with an extensible pattern.

Grab The Code

It’s all covered in ~300 lines of code:

1. A package with a GraphQL Schema, using a Query and a Mutation class
2. A GraphQLHandler that dispatches POST requests to GraphQL
3. An Application that creates the Ratpack server for the GraphQLHandler

The README covers how to run it, and there are a series sample requests included.