graphql-composition 0.12.2

An implementation of GraphQL federated schema composition
Documentation 
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---
source: crates/graphql-composition/tests/composition_tests.rs
expression: Federated SDL
input_file: crates/graphql-composition/tests/composition/unions_basic/test.md
---
schema
  @link(url: "https://specs.apollo.dev/link/v1.0")
  @link(url: "https://specs.apollo.dev/join/v0.3", for: EXECUTION)
  @link(url: "https://specs.apollo.dev/inaccessible/v0.2", for: SECURITY)
{
  query: Query
}

directive @join__unionMember(graph: join__Graph!, member: String!) on UNION

directive @join__implements(graph: join__Graph!, interface: String!) on OBJECT | INTERFACE

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

directive @join__field(graph: join__Graph, requires: join__FieldSet, provides: join__FieldSet, type: String, external: Boolean, override: String, overrideLabel: String) on FIELD_DEFINITION | INPUT_FIELD_DEFINITION

directive @join__type(graph: join__Graph, key: join__FieldSet, extension: Boolean = false, resolvable: Boolean = true, isInterfaceObject: Boolean = false) on SCALAR | OBJECT | INTERFACE | UNION | ENUM | INPUT_OBJECT

directive @join__owner(graph: join__Graph!) on OBJECT

scalar join__FieldSet

type Pizza
  @join__type(graph: PIZZA)
{
  id: ID!
  nameEn: String
  nameIt: String!
  toppings: [Topping!]!
}

type Onion
  @join__type(graph: PIZZA)
{
  variety: String
}

type Cheese
  @join__type(graph: PIZZA)
{
  quantity: Int!
  type: String!
}

type Pineapple
  @join__type(graph: PIZZA)
{
  isAnanas: Boolean!
}

type Sushi
  @join__type(graph: SUSHI)
{
  id: ID!
  topping: Topping
}

type Salmon
  @join__type(graph: SUSHI)
{
  id: ID!
  raw: Boolean
}

type Omelet
  @join__type(graph: SUSHI)
{
  isRectangular: Boolean
}

type Query
{
  pizza(id: ID!): Pizza @join__field(graph: PIZZA)
}

enum join__Graph
{
  PIZZA @join__graph(name: "pizza", url: "http://example.com/pizza")
  SUSHI @join__graph(name: "sushi", url: "http://example.com/sushi")
}

union Topping
  @join__unionMember(graph: PIZZA, member: "Onion")
  @join__unionMember(graph: PIZZA, member: "Cheese")
  @join__unionMember(graph: PIZZA, member: "Pineapple")
  @join__unionMember(graph: SUSHI, member: "Salmon")
  @join__unionMember(graph: SUSHI, member: "Omelet")
 = Onion | Cheese | Pineapple | Salmon | Omelet