Module: GraphQL::Compatibility::ExecutionSpecification::SpecificationSchema

Defined in:
lib/graphql/compatibility/execution_specification/specification_schema.rb

Defined Under Namespace

Modules: TestMiddleware Classes: CustomCollection

Constant Summary

BOGUS_NODE = 
OpenStruct.new({ bogus: true })
DATA = 
{
  "1001" => OpenStruct.new({
    name: "Fannie Lou Hamer",
    birthdate: Time.new(1917, 10, 6),
    organization_ids: [],
  }),
  "1002" => OpenStruct.new({
    name: "John Lewis",
    birthdate: Time.new(1940, 2, 21),
    organization_ids: ["2001"],
  }),
  "1003" => OpenStruct.new({
    name: "Diane Nash",
    birthdate: Time.new(1938, 5, 15),
    organization_ids: ["2001", "2002"],
  }),
  "1004" => OpenStruct.new({
    name: "Ralph Abernathy",
    birthdate: Time.new(1926, 3, 11),
    organization_ids: ["2002"],
  }),
  "2001" => OpenStruct.new({
    name: "SNCC",
    leader_id: nil, # fail on purpose
  }),
  "2002" => OpenStruct.new({
    name: "SCLC",
    leader_id: "1004",
  }),
  "2003" => BOGUS_NODE,
}

Class Method Summary collapse

Class Method Details

.build(execution_strategy) ⇒ Object 



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# File 'lib/graphql/compatibility/execution_specification/specification_schema.rb', line 58

def self.build(execution_strategy)
  organization_type = nil

  timestamp_type = GraphQL::ScalarType.define do
    name "Timestamp"
    coerce_input ->(value, _ctx) { Time.at(value.to_i) }
    coerce_result ->(value, _ctx) { value.to_i }
  end

  named_entity_interface_type = GraphQL::InterfaceType.define do
    name "NamedEntity"
    field :name, !types.String
  end

  person_type = GraphQL::ObjectType.define do
    name "Person"
    interfaces [named_entity_interface_type]
    field :name, !types.String
    field :birthdate, timestamp_type
    field :age, types.Int do
      argument :on, !timestamp_type
      resolve ->(obj, args, ctx) {
        if obj.birthdate.nil?
          nil
        else
          age_on = args[:on]
          age_years = age_on.year - obj.birthdate.year
          this_year_birthday = Time.new(age_on.year, obj.birthdate.month, obj.birthdate.day)
          if this_year_birthday > age_on
            age_years -= 1
          end
        end
        age_years
      }
    end
    field :organizations, types[organization_type] do
      resolve ->(obj, args, ctx) {
        CustomCollection.new(obj.organization_ids.map { |id| DATA[id] })
      }
    end
    field :first_organization, !organization_type do
      resolve ->(obj, args, ctx) {
        DATA[obj.organization_ids.first]
      }
    end
  end

  organization_type = GraphQL::ObjectType.define do
    name "Organization"
    interfaces [named_entity_interface_type]
    field :name, !types.String
    field :leader, !person_type do
      resolve ->(obj, args, ctx) {
        DATA[obj.leader_id] || (ctx[:return_error] ? ExecutionError.new("Error on Nullable") : nil)
      }
    end
    field :returnedError, types.String do
      resolve ->(o, a, c) {
        GraphQL::ExecutionError.new("This error was returned")
      }
    end
    field :raisedError, types.String do
      resolve ->(o, a, c) {
        raise GraphQL::ExecutionError.new("This error was raised")
      }
    end

    field :nodePresence, !types[!types.Boolean] do
      resolve ->(o, a, ctx) {
        [
          ctx.irep_node.is_a?(GraphQL::InternalRepresentation::Node),
          ctx.ast_node.is_a?(GraphQL::Language::Nodes::AbstractNode),
          false, # just testing
        ]
      }
    end
  end

  node_union_type = GraphQL::UnionType.define do
    name "Node"
    possible_types [person_type, organization_type]
  end

  query_type = GraphQL::ObjectType.define do
    name "Query"
    field :node, node_union_type do
      argument :id, !types.ID
      resolve ->(obj, args, ctx) {
        obj[args[:id]]
      }
    end

    field :requiredNode, node_union_type.to_non_null_type do
      argument :id, !types.ID
      resolve ->(obj, args, ctx) {
        obj[args[:id]]
      }
    end

    field :organization, !organization_type do
      argument :id, !types.ID
      resolve ->(obj, args, ctx) {
        if args[:id].start_with?("2")
          obj[args[:id]]
        else
          # test context.skip
          ctx.skip
        end
      }
    end

    field :organizations, types[organization_type] do
      resolve ->(obj, args, ctx) {
        [obj["2001"], obj["2002"]]
      }
    end
  end

  GraphQL::Schema.define do
    query_execution_strategy execution_strategy
    query query_type

    resolve_type ->(type, obj, ctx) {
      if obj.respond_to?(:birthdate)
        person_type
      elsif obj.respond_to?(:leader_id)
        organization_type
      else
        nil
      end
    }

    type_error ->(err, ctx) {
      ctx[:type_errors] && (ctx[:type_errors] << err.value)
      ctx[:gobble] || GraphQL::Schema::DefaultTypeError.call(err, ctx)
    }
    middleware(TestMiddleware)
  end
end