Specification

This document adheres to RFC2119

General

• the API must be a GraphQL API as specified

• entrypoint must be /graphql/

• HTTP response status code must be 200

• use OXID models and create DataTypes as facades for GraphQLite

• relations to other DataTypes should be nullable (and return null in case the requested object is not accessible or not existend)

Login/Auth

• auth against the API must be done via a Bearer JWT in the Authorization HTTP header

• the token query must not have a token sent with the HTTP request

Naming

Queries

• must not have get or has or similar prefix

• query name must be singular or plural object name

• valid examples:

  • user

  • users

  • product

  • products

• invalid examples

  • getUser

  • fetchProduct

• must have proper input type definitions

Queries for lists

Additional to the rules applied for the queries, when querying for lists the query should have the following input parameters - all optional.

• filter which should be of type ObjectFilterInput (which you have to create and name accordingly)

  • the fields of this FilterInput type should be of one of the provided filter input types

• sort which should be of type ObjectSorting (which you have to create and name accordingly)

• limit which must be of type Int (if ommitted must behave as no limit)

• offset which must be of type Int (if ommitted must behave as 0)

Mutations

• must start with the object name, then the action verb (camelCase)

• valid examples

  • userRegister

  • categoryCreate

  • categoryUpdate

  • categoryDelete

• invalid

  • createuser

• should not use generics (create, update, delete), but the correct domain verbs where possible (register user vs. create / add, place order vs. create, …)

• must have proper input type definitions

Fields

• every field from every model should be available as a GraphQL field and must have a correct type annotation (ID for oxid database field, not String)

• multilanguage fields must not be exposed separately, but in context of the language of the token as a normal field (no title_1 or title_2 fields, only title for the oxarticles.oxtitle\* database fields)

• parent ids, object ids, foreign keys (relations), etc. must be exposed via their correct type

  • example: a product has an oxvendorid, which should not be exposed as ID or String field, but as a relation to that specific type

  • you may additionally add the field with the ID type when necessary

type Product {
    # do
    category: Category!
    # don't
    categoryId: ID!
}