directive @core(feature: String!) repeatable on SCHEMA

directive @join__owner(graph: join__Graph!) on OBJECT

directive @join__type(
    graph: join__Graph!
    key: String!
    resolvable: Boolean = true
) repeatable on OBJECT | INTERFACE

directive @join__field(
    graph: join__Graph
    requires: String
    provides: String
) on FIELD_DEFINITION

directive @join__graph(name: String!, url: String!) on ENUM_VALUE

enum join__Graph {
    MULTI_KEY @join__graph(name: "multi-key", url: "http://example.com/multi-key")
    SINGLE_KEY @join__graph(name: "single-key", url: "http://example.com/single-key")
}

type User
    @join__type(graph: MULTI_KEY, key: "id")
    @join__type(graph: MULTI_KEY, key: "name email")
    @join__type(graph: SINGLE_KEY, key: "id")
{
    comments: [Comment!]! @join__field(graph: MULTI_KEY)
    email: String!
    id: ID!
    name: String!
    posts: [Post!]! @join__field(graph: SINGLE_KEY)
}

type Comment {
    id: ID! @join__field(graph: MULTI_KEY)
    text: String! @join__field(graph: MULTI_KEY)
}

type Post {
    body: String! @join__field(graph: SINGLE_KEY)
    id: ID! @join__field(graph: SINGLE_KEY)
    published: Boolean! @join__field(graph: SINGLE_KEY)
    title: String! @join__field(graph: SINGLE_KEY)
}

type Query {
    getUser(id: ID!): User @join__field(graph: SINGLE_KEY)
    getUserComments(name: String!, email: String!): User @join__field(graph: MULTI_KEY)
}