Basic Shareable example

rfcs/test-cases/shareable-basic/federation/_supergraph.graphql

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+schema
+  @link(url: "https://specs.apollo.dev/link/v1.0")
+  @link(url: "https://specs.apollo.dev/join/v0.3", for: EXECUTION)
+{
+  query: Query
+}
+
+directive @join__enumValue(graph: join__Graph!) repeatable on ENUM_VALUE
+
+directive @join__field(graph: join__Graph, requires: join__FieldSet, provides: join__FieldSet, type: String, external: Boolean, override: String, usedOverridden: Boolean) repeatable on FIELD_DEFINITION | INPUT_FIELD_DEFINITION
+
+directive @join__graph(name: String!, url: String!) on ENUM_VALUE
+
+directive @join__implements(graph: join__Graph!, interface: String!) repeatable on OBJECT | INTERFACE
+
+directive @join__type(graph: join__Graph!, key: join__FieldSet, extension: Boolean! = false, resolvable: Boolean! = true, isInterfaceObject: Boolean! = false) repeatable on OBJECT | INTERFACE | UNION | ENUM | INPUT_OBJECT | SCALAR
+
+directive @join__unionMember(graph: join__Graph!, member: String!) repeatable on UNION
+
+directive @link(url: String, as: String, for: link__Purpose, import: [link__Import]) repeatable on SCHEMA
+
+scalar join__FieldSet
+
+enum join__Graph {
+  LOCATIONS @join__graph(name: "locations", url: "https://flyby-locations-sub.herokuapp.com/")
+  REVIEWS @join__graph(name: "reviews", url: "https://flyby-reviews-sub.herokuapp.com/")
+}
+
+scalar link__Import
+
+enum link__Purpose {
+  """
+  `SECURITY` features provide metadata necessary to securely resolve fields.
+  """
+  SECURITY
+
+  """
+  `EXECUTION` features provide metadata necessary for operation execution.
+  """
+  EXECUTION
+}
+
+type Location
+  @join__type(graph: LOCATIONS, key: "id")
+  @join__type(graph: REVIEWS, key: "id")
+{
+  id: ID!
+  name: String! @join__field(graph: LOCATIONS)
+  description: String!
+}
+
+type Query
+  @join__type(graph: LOCATIONS)
+  @join__type(graph: REVIEWS)
+{
+  locations: [Location!]! @join__field(graph: LOCATIONS)
+  topLocations: [Location!]! @join__field(graph: REVIEWS)
+}

rfcs/test-cases/shareable-basic/federation/a.graphql

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+extend schema
+    @link(
+        url: "https://specs.apollo.dev/federation/v2.5",
+        import: ["@key", "@shareable"]
+    )
+
+type Query {
+    locations: [Location!]!
+}
+
+type Location @key(fields: "id") {
+    id: ID!
+    name: String!
+    description: String! @shareable
+}

rfcs/test-cases/shareable-basic/federation/b.graphql

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+extend schema
+    @link(
+        url: "https://specs.apollo.dev/federation/v2.5",
+        import: ["@key", "@shareable"]
+    )
+
+type Query {
+    topLocations: [Location!]!
+}
+
+type Location @key(fields: "id") {
+    id: ID!
+    description: String! @shareable
+}