darrellwarde / graphconnect-2022-lightning

Making the Connection Between GraphQL and Your Neo4j Graph Database

Making the Connection Between GraphQL and Your Neo4j Graph Database

Setup

Ensure that you have Node.js and npm installed, and run the following command to install dependencies:

npm install

You must have a running database and have the following connection properties in a .env file at the root:

• DB_USERNAME - username to be used to connect to the running database
• DB_PASSWORD - password to be used to connect to the running database
• DB_URL - URL at which the running database can be connected to

There must be some GraphQL type definitions in the file src/type-defs.graphql, either manually written or introspected by following the steps in the following section.

Introspect

To introspect GraphQL type definitions from the data stored within the database specified in your .env file, run the following command:

npm run introspect

This will output a file src/type-defs.graphql containing the introspected type definitions.

Running the server

With database connection details specified in .env and type definitions defined in src/type-defs.graphql, you can run the following command to start the server:

npm start

You can then click on the link output in the console to access Apollo Sandbox and run GraphQL queries.