Class: GraphQL::Schema

Inherits:
Object
  • Object
show all
Extended by:
Autoload, FindInheritedValue, Member::HasAstNode
Defined in:
lib/graphql/schema.rb,
lib/graphql/schema/enum.rb,
lib/graphql/schema/list.rb,
lib/graphql/schema/field.rb,
lib/graphql/schema/union.rb,
lib/graphql/schema/finder.rb,
lib/graphql/schema/loader.rb,
lib/graphql/schema/member.rb,
lib/graphql/schema/object.rb,
lib/graphql/schema/scalar.rb,
lib/graphql/schema/warden.rb,
lib/graphql/schema/printer.rb,
lib/graphql/schema/timeout.rb,
lib/graphql/schema/wrapper.rb,
lib/graphql/schema/addition.rb,
lib/graphql/schema/argument.rb,
lib/graphql/schema/mutation.rb,
lib/graphql/schema/non_null.rb,
lib/graphql/schema/resolver.rb,
lib/graphql/schema/directive.rb,
lib/graphql/schema/interface.rb,
lib/graphql/schema/validator.rb,
lib/graphql/schema/enum_value.rb,
lib/graphql/schema/visibility.rb,
lib/graphql/schema/input_object.rb,
lib/graphql/schema/subscription.rb,
lib/graphql/schema/member/scoped.rb,
lib/graphql/schema/always_visible.rb,
lib/graphql/schema/built_in_types.rb,
lib/graphql/schema/directive/skip.rb,
lib/graphql/schema/base_64_encoder.rb,
lib/graphql/schema/field_extension.rb,
lib/graphql/schema/late_bound_type.rb,
lib/graphql/schema/member/has_path.rb,
lib/graphql/schema/type_expression.rb,
lib/graphql/schema/type_membership.rb,
lib/graphql/schema/directive/one_of.rb,
lib/graphql/schema/visibility/visit.rb,
lib/graphql/schema/directive/feature.rb,
lib/graphql/schema/directive/flagged.rb,
lib/graphql/schema/directive/include.rb,
lib/graphql/schema/member/build_type.rb,
lib/graphql/schema/member/has_fields.rb,
lib/graphql/schema/unique_within_type.rb,
lib/graphql/schema/visibility/profile.rb,
lib/graphql/schema/directive/transform.rb,
lib/graphql/schema/member/has_ast_node.rb,
lib/graphql/schema/directive/deprecated.rb,
lib/graphql/schema/find_inherited_value.rb,
lib/graphql/schema/introspection_system.rb,
lib/graphql/schema/member/has_arguments.rb,
lib/graphql/schema/visibility/migration.rb,
lib/graphql/schema/build_from_definition.rb,
lib/graphql/schema/field/scope_extension.rb,
lib/graphql/schema/member/has_dataloader.rb,
lib/graphql/schema/member/has_directives.rb,
lib/graphql/schema/member/has_interfaces.rb,
lib/graphql/schema/member/has_validators.rb,
lib/graphql/schema/directive/specified_by.rb,
lib/graphql/schema/member/relay_shortcuts.rb,
lib/graphql/schema/member/validates_input.rb,
lib/graphql/schema/relay_classic_mutation.rb,
lib/graphql/schema/member/base_dsl_methods.rb,
lib/graphql/schema/validator/all_validator.rb,
lib/graphql/schema/has_single_input_argument.rb,
lib/graphql/schema/member/graphql_type_names.rb,
lib/graphql/schema/resolver/has_payload_type.rb,
lib/graphql/schema/field/connection_extension.rb,
lib/graphql/schema/member/type_system_helpers.rb,
lib/graphql/schema/validator/format_validator.rb,
lib/graphql/schema/validator/length_validator.rb,
lib/graphql/schema/validator/required_validator.rb,
lib/graphql/schema/member/has_deprecation_reason.rb,
lib/graphql/schema/validator/exclusion_validator.rb,
lib/graphql/schema/validator/inclusion_validator.rb,
lib/graphql/schema/validator/allow_null_validator.rb,
lib/graphql/schema/validator/allow_blank_validator.rb,
lib/graphql/schema/member/has_unresolved_type_error.rb,
lib/graphql/schema/validator/numericality_validator.rb,
lib/graphql/schema/build_from_definition/resolve_map.rb,
lib/graphql/schema/build_from_definition/resolve_map/default_resolve.rb

Overview

A GraphQL schema which may be queried with Query.

The Schema contains:

  • types for exposing your application
  • query analyzers for assessing incoming queries (including max depth & max complexity restrictions)
  • execution strategies for running incoming queries

Schemas start with root types, Schema.query, Schema.mutation and Schema.subscription. The schema will traverse the tree of fields & types, using those as starting points. Any undiscoverable types may be provided with the types configuration.

Schemas can restrict large incoming queries with max_depth and max_complexity configurations. (These configurations can be overridden by specific calls to Schema.execute)

Examples:

defining a schema

class MySchema < GraphQL::Schema
  query QueryType
  # If types are only connected by way of interfaces, they must be added here
  orphan_types ImageType, AudioType
end

Direct Known Subclasses

Query::NullContext::NullSchema

Defined Under Namespace

Modules: AlwaysVisible, Base64Encoder, BuildFromDefinition, DefaultTraceClass, FindInheritedValue, HasSingleInputArgument, Interface, Loader, ResolveTypeWithType, SubclassGetReferencesTo, TypeExpression, UniqueWithinType Classes: Addition, Argument, Directive, DuplicateNamesError, Enum, EnumValue, Field, FieldExtension, Finder, InputObject, IntrospectionSystem, InvalidDocumentError, LateBoundType, List, Member, Mutation, NonNull, Object, Printer, RelayClassicMutation, Resolver, Scalar, Subscription, Timeout, TypeMembership, Union, UnresolvedLateBoundTypeError, Validator, Visibility, Warden, Wrapper

Constant Summary collapse

NEW_HANDLER_HASH = 
->(h, k) {
  h[k] = {
    class: k,
    handler: nil,
    subclass_handlers: Hash.new(&NEW_HANDLER_HASH),
   }
}
BUILT_IN_TYPES = 
{
  "Int" => GraphQL::Types::Int,
  "String" => GraphQL::Types::String,
  "Float" => GraphQL::Types::Float,
  "Boolean" => GraphQL::Types::Boolean,
  "ID" => GraphQL::Types::ID,
}

Class Attribute Summary collapse

Attributes included from Member::HasAstNode

#ast_node

Class Method Summary collapse

Methods included from Member::HasAstNode

inherited

Methods included from Autoload

autoload, eager_load!

Class Attribute Details

.analysis_engine ⇒ Object 



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# File 'lib/graphql/schema.rb', line 893

def analysis_engine
  @analysis_engine || find_inherited_value(:analysis_engine, self.default_analysis_engine)
end

.connections ⇒ GraphQL::Pagination::Connections

Returns if installed.

Returns:



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# File 'lib/graphql/schema.rb', line 413

def connections
  if defined?(@connections)
    @connections
  else
    inherited_connections = find_inherited_value(:connections, nil)
    # This schema is part of an inheritance chain which is using new connections,
    # make a new instance, so we don't pollute the upstream one.
    if inherited_connections
      @connections = Pagination::Connections.new(schema: self)
    else
      nil
    end
  end
end

.dataloader_class ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

See Also:



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# File 'lib/graphql/schema.rb', line 669

def dataloader_class
  @dataloader_class || GraphQL::Dataloader::NullDataloader
end

.detailed_trace ⇒ GraphQL::Tracing::DetailedTrace

Returns if it has been configured for this schema.

Returns:



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# File 'lib/graphql/schema.rb', line 1385

def detailed_trace
  @detailed_trace
end

.error_bubbling(new_error_bubbling = nil) ⇒ Object 



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# File 'lib/graphql/schema.rb', line 897

def error_bubbling(new_error_bubbling = nil)
  if !new_error_bubbling.nil?
    warn("error_bubbling(#{new_error_bubbling.inspect}) is deprecated; the default value of `false` will be the only option in GraphQL-Ruby 3.0")
    @error_bubbling = new_error_bubbling
  else
    @error_bubbling.nil? ? find_inherited_value(:error_bubbling) : @error_bubbling
  end
end

.max_complexity(max_complexity = nil, count_introspection_fields: true) ⇒ Object 



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# File 'lib/graphql/schema.rb', line 872

def max_complexity(max_complexity = nil, count_introspection_fields: true)
  if max_complexity
    @max_complexity = max_complexity
    @max_complexity_count_introspection_fields = count_introspection_fields
  elsif defined?(@max_complexity)
    @max_complexity
  else
    find_inherited_value(:max_complexity)
  end
end

.max_depth(new_max_depth = nil, count_introspection_fields: true) ⇒ Object 



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# File 'lib/graphql/schema.rb', line 910

def max_depth(new_max_depth = nil, count_introspection_fields: true)
  if new_max_depth
    @max_depth = new_max_depth
    @count_introspection_fields = count_introspection_fields
  elsif defined?(@max_depth)
    @max_depth
  else
    find_inherited_value(:max_depth)
  end
end

.use_visibility_profile=(value) ⇒ Object (writeonly)

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/graphql/schema.rb', line 597

def use_visibility_profile=(value)
  @use_visibility_profile = value
end

.using_backtrace ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/graphql/schema.rb', line 1125

def using_backtrace
  @using_backtrace
end

.validate_max_errors(new_validate_max_errors = NOT_CONFIGURED) ⇒ Object 



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# File 'lib/graphql/schema.rb', line 862

def validate_max_errors(new_validate_max_errors = NOT_CONFIGURED)
  if NOT_CONFIGURED.equal?(new_validate_max_errors)
    defined?(@validate_max_errors) ? @validate_max_errors : find_inherited_value(:validate_max_errors)
  else
    @validate_max_errors = new_validate_max_errors
  end
end

.validate_timeout(new_validate_timeout = NOT_CONFIGURED) ⇒ Object 



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# File 'lib/graphql/schema.rb', line 824

def validate_timeout(new_validate_timeout = NOT_CONFIGURED)
  if !NOT_CONFIGURED.equal?(new_validate_timeout)
    @validate_timeout = new_validate_timeout
  elsif defined?(@validate_timeout)
    @validate_timeout
  else
    find_inherited_value(:validate_timeout) || 3
  end
end

.visibility ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/graphql/schema.rb', line 599

def visibility
  @visibility
end

.visibility_profile_class ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/graphql/schema.rb', line 586

def visibility_profile_class
  if defined?(@visibility_profile_class)
    @visibility_profile_class
  elsif superclass.respond_to?(:visibility_profile_class)
    superclass.visibility_profile_class
  else
    GraphQL::Schema::Visibility::Profile
  end
end

.warden_class ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/graphql/schema.rb', line 572

def warden_class
  if defined?(@warden_class)
    @warden_class
  elsif superclass.respond_to?(:warden_class)
    superclass.warden_class
  else
    GraphQL::Schema::Warden
  end
end

Class Method Details

.add_subscription_extension_if_necessary ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/graphql/schema.rb', line 1595

def add_subscription_extension_if_necessary
  # TODO: when there's a proper API for extending root types, migrat this to use it.
  if !defined?(@subscription_extension_added) && @subscription_object.is_a?(Class) && self.subscriptions
    @subscription_extension_added = true
    subscription.all_field_definitions.each do |field|
      if !field.extensions.any? { |ext| ext.is_a?(Subscriptions::DefaultSubscriptionResolveExtension) }
        field.extension(Subscriptions::DefaultSubscriptionResolveExtension)
      end
    end
  end
end

.after_any_lazies(maybe_lazies) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Return a lazy if any of maybe_lazies are lazy, otherwise, call the block eagerly and return the result.

Parameters:

  • maybe_lazies (Array) 


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# File 'lib/graphql/schema.rb', line 1660

def after_any_lazies(maybe_lazies)
  if maybe_lazies.any? { |l| lazy?(l) }
    GraphQL::Execution::Lazy.all(maybe_lazies).then do |result|
      yield result
    end
  else
    yield maybe_lazies
  end
end

.after_lazy(value, &block) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Call the given block at the right time, either: - Right away, if value is not registered with lazy_resolve - After resolving value, if it’s registered with lazy_resolve (eg, Promise)



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# File 'lib/graphql/schema.rb', line 1620

def after_lazy(value, &block)
  if lazy?(value)
    GraphQL::Execution::Lazy.new do
      result = sync_lazy(value)
      # The returned result might also be lazy, so check it, too
      after_lazy(result, &block)
    end
  else
    yield(value) if block_given?
  end
end

.allow_legacy_invalid_empty_selections_on_union(new_value = NOT_CONFIGURED) ⇒ true, ...

This setting controls how GraphQL-Ruby handles empty selections on Union types.

To opt into future, spec-compliant behavior where these selections are rejected, set this to false.

If you need to support previous, non-spec behavior which allowed selecting union fields but not selecting any fields on that union, set this to true to continue allowing that behavior.

If this is true, then legacy_invalid_empty_selections_on_union will be called with Query objects with that kind of selections. You must implement that method

Parameters:

  • new_value (Boolean) (defaults to: NOT_CONFIGURED)

Returns:

  • (true, false, nil) 


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# File 'lib/graphql/schema.rb', line 1696

def allow_legacy_invalid_empty_selections_on_union(new_value = NOT_CONFIGURED)
  if NOT_CONFIGURED.equal?(new_value)
    @allow_legacy_invalid_empty_selections_on_union
  else
    @allow_legacy_invalid_empty_selections_on_union = new_value
  end
end

.allow_legacy_invalid_return_type_conflicts(new_value = NOT_CONFIGURED) ⇒ true, ...

This setting controls how GraphQL-Ruby handles overlapping selections on scalar types when the types don’t match.

When set to false, GraphQL-Ruby will reject those queries with a validation error (as per the GraphQL spec).

When set to true, GraphQL-Ruby will call legacy_invalid_return_type_conflicts when the scenario is encountered.

Parameters:

  • new_value (Boolean) (defaults to: NOT_CONFIGURED) —

    true permits the legacy behavior, false rejects it.

Returns:

  • (true, false, nil) 


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# File 'lib/graphql/schema.rb', line 1727

def allow_legacy_invalid_return_type_conflicts(new_value = NOT_CONFIGURED)
  if NOT_CONFIGURED.equal?(new_value)
    @allow_legacy_invalid_return_type_conflicts
  else
    @allow_legacy_invalid_return_type_conflicts = new_value
  end
end

.as_json(context: {}, include_deprecated_args: true, include_schema_description: false, include_is_repeatable: false, include_specified_by_url: false, include_is_one_of: false) ⇒ Hash

Return the Hash response of Introspection::INTROSPECTION_QUERY.

Parameters:

  • context (Hash) (defaults to: {})
  • include_deprecated_args (Boolean) (defaults to: true) —

    If true, deprecated arguments will be included in the JSON response

  • include_schema_description (Boolean) (defaults to: false) —

    If true, the schema’s description will be queried and included in the response

  • include_is_repeatable (Boolean) (defaults to: false) —

    If true, isRepeatable: true|false will be included with the schema’s directives

  • include_specified_by_url (Boolean) (defaults to: false) —

    If true, scalar types’ specifiedByUrl: will be included in the response

  • include_is_one_of (Boolean) (defaults to: false) —

    If true, isOneOf: true|false will be included with input objects

Returns:

  • (Hash) —

    GraphQL result



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# File 'lib/graphql/schema.rb', line 266

def as_json(context: {}, include_deprecated_args: true, include_schema_description: false, include_is_repeatable: false, include_specified_by_url: false, include_is_one_of: false)
  introspection_query = Introspection.query(
    include_deprecated_args: include_deprecated_args,
    include_schema_description: include_schema_description,
    include_is_repeatable: include_is_repeatable,
    include_is_one_of: include_is_one_of,
    include_specified_by_url: include_specified_by_url,
  )

  execute(introspection_query, context: context).to_h
end

.build_trace_mode(mode) ⇒ Object 



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# File 'lib/graphql/schema.rb', line 209

def build_trace_mode(mode)
  case mode
  when :default
    # Use the superclass's default mode if it has one, or else start an inheritance chain at the built-in base class.
    base_class = (superclass.respond_to?(:trace_class_for) && superclass.trace_class_for(mode, build: true)) || GraphQL::Tracing::Trace
    const_set(:DefaultTrace, Class.new(base_class) do
      include DefaultTraceClass
    end)
  else
    # First, see if the superclass has a custom-defined class for this.
    # Then, if it doesn't, use this class's default trace
    base_class = (superclass.respond_to?(:trace_class_for) && superclass.trace_class_for(mode)) || trace_class_for(:default, build: true)
    # Prepare the default trace class if it hasn't been initialized yet
    base_class ||= (own_trace_modes[:default] = build_trace_mode(:default))
    mods = trace_modules_for(mode)
    if base_class < DefaultTraceClass
      mods = trace_modules_for(:default) + mods
    end
    # Copy the existing default options into this mode's options
    default_options = trace_options_for(:default)
    add_trace_options_for(mode, default_options)

    Class.new(base_class) do
      !mods.empty? && include(*mods)
    end
  end
end

.complexity_cost_calculation_mode(new_mode = NOT_CONFIGURED) ⇒ Object

The legacy complexity implementation included several bugs:

  • In some cases, it used the lexically last field to determine a cost, instead of calculating the maximum among selections
  • In some cases, it called field complexity hooks repeatedly (when it should have only called them once)

The future implementation may produce higher total complexity scores, so it’s not active by default yet. You can opt into the future default behavior by configuring :future here. Or, you can choose a mode for each query with complexity_cost_calculation_mode_for.

The legacy mode is currently maintained alongside the future one, but it will be removed in a future GraphQL-Ruby version.

If you choose :compare, you must also implement legacy_complexity_cost_calculation_mismatch to handle the input somehow.

Examples:

Opting into the future calculation mode

complexity_cost_calculation_mode(:future)

Choosing the legacy mode (which will work until that mode is removed…)

complexity_cost_calculation_mode(:legacy)

Run both modes for every query, call legacy_complexity_cost_calculation_mismatch when they don’t match:

complexity_cost_calculation_mode(:compare)


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# File 'lib/graphql/schema.rb', line 1775

def complexity_cost_calculation_mode(new_mode = NOT_CONFIGURED)
  if NOT_CONFIGURED.equal?(new_mode)
    @complexity_cost_calculation_mode
  else
    @complexity_cost_calculation_mode = new_mode
  end
end

.complexity_cost_calculation_mode_for(multiplex_context) ⇒ :future, ...

Implement this method to produce a per-query complexity cost calculation mode. (Technically, it’s per-multiplex.)

This is a way to check the compatibility of queries coming to your API without adding overhead of running :compare for every query. You could sample traffic, turn it off/on with feature flags, or anything else.

Examples:

Sampling traffic

def self.complexity_cost_calculation_mode_for(_context)
  if rand < 0.1 # 10% of the time
    :compare
  else
    :legacy
  end
end

Using a feature flag to manage future mode

def complexity_cost_calculation_mode_for(context)
  current_user = context[:current_user]
  if Flipper.enabled?(:future_complexity_cost, current_user)
    :future
  elsif rand < 0.5 # 50%
    :compare
  else
    :legacy
  end
end

Parameters:

  • multiplex_context (Hash) —

    The context for the currently-running Execution::Multiplex (which contains one or more queries)

Returns:

  • (:future) —

    Use the new calculation algorithm – may be higher than :legacy

  • (:legacy) —

    Use the legacy calculation algorithm, warts and all

  • (:compare) —

    Run both algorithms and call legacy_complexity_cost_calculation_mismatch if they don’t match



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# File 'lib/graphql/schema.rb', line 1813

def complexity_cost_calculation_mode_for(multiplex_context)
  complexity_cost_calculation_mode
end

.context_class(new_context_class = nil) ⇒ Object

Parameters:

  • new_context_class (Class<GraphQL::Query::Context>) (defaults to: nil) —

    A subclass to use when executing queries



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# File 'lib/graphql/schema.rb', line 1080

def context_class(new_context_class = nil)
  if new_context_class
    @context_class = new_context_class
  else
    @context_class || find_inherited_value(:context_class, GraphQL::Query::Context)
  end
end

.count_introspection_fields ⇒ Object 



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# File 'lib/graphql/schema.rb', line 921

def count_introspection_fields
  if defined?(@count_introspection_fields)
    @count_introspection_fields
  else
    find_inherited_value(:count_introspection_fields, true)
  end
end

.cursor_encoder(new_encoder = nil) ⇒ Object 



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# File 'lib/graphql/schema.rb', line 752

def cursor_encoder(new_encoder = nil)
  if new_encoder
    @cursor_encoder = new_encoder
  end
  @cursor_encoder || find_inherited_value(:cursor_encoder, Base64Encoder)
end

.default_analysis_engine ⇒ Object 



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# File 'lib/graphql/schema.rb', line 1037

def default_analysis_engine
  if superclass <= GraphQL::Schema
    superclass.default_analysis_engine
  else
    @default_analysis_engine ||= GraphQL::Analysis::AST
  end
end

.default_directives ⇒ Object 



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# File 'lib/graphql/schema.rb', line 1374

def default_directives
  @default_directives ||= {
    "include" => GraphQL::Schema::Directive::Include,
    "skip" => GraphQL::Schema::Directive::Skip,
    "deprecated" => GraphQL::Schema::Directive::Deprecated,
    "oneOf" => GraphQL::Schema::Directive::OneOf,
    "specifiedBy" => GraphQL::Schema::Directive::SpecifiedBy,
  }.freeze
end

.default_execution_strategy ⇒ Object 



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# File 'lib/graphql/schema.rb', line 1029

def default_execution_strategy
  if superclass <= GraphQL::Schema
    superclass.default_execution_strategy
  else
    @default_execution_strategy ||= GraphQL::Execution::Interpreter
  end
end

.default_logger(new_default_logger = NOT_CONFIGURED) ⇒ Object

Parameters:

  • new_default_logger (#log) (defaults to: NOT_CONFIGURED) —

    Something to use for logging messages



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# File 'lib/graphql/schema.rb', line 1047

def default_logger(new_default_logger = NOT_CONFIGURED)
  if NOT_CONFIGURED.equal?(new_default_logger)
    if defined?(@default_logger)
      @default_logger
    elsif superclass.respond_to?(:default_logger)
      superclass.default_logger
    elsif defined?(Rails) && Rails.respond_to?(:logger) && (rails_logger = Rails.logger)
      rails_logger
    else
      def_logger = Logger.new($stdout)
      def_logger.info! # It doesn't output debug info by default
      def_logger
    end
  elsif new_default_logger == nil
    @default_logger = Logger.new(IO::NULL)
  else
    @default_logger = new_default_logger
  end
end

.default_max_page_size(new_default_max_page_size = nil) ⇒ Object 



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# File 'lib/graphql/schema.rb', line 759

def default_max_page_size(new_default_max_page_size = nil)
  if new_default_max_page_size
    @default_max_page_size = new_default_max_page_size
  else
    @default_max_page_size || find_inherited_value(:default_max_page_size)
  end
end

.default_page_size(new_default_page_size = nil) ⇒ Object 



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# File 'lib/graphql/schema.rb', line 778

def default_page_size(new_default_page_size = nil)
  if new_default_page_size
    @default_page_size = new_default_page_size
  else
    @default_page_size || find_inherited_value(:default_page_size)
  end
end

.default_trace_mode(new_mode = nil) ⇒ Object

Parameters:

  • new_mode (Symbol) (defaults to: nil) —

    If configured, this will be used when context: { trace_mode: ... } isn’t set.



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# File 'lib/graphql/schema.rb', line 151

def default_trace_mode(new_mode = nil)
  if new_mode
    @default_trace_mode = new_mode
  elsif defined?(@default_trace_mode)
    @default_trace_mode
  elsif superclass.respond_to?(:default_trace_mode)
    superclass.default_trace_mode
  else
    :default
  end
end

.deprecated_graphql_definition ⇒ Object 



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# File 'lib/graphql/schema.rb', line 137

def deprecated_graphql_definition
  graphql_definition(silence_deprecation_warning: true)
end

.description(new_description = nil) ⇒ String?

Returns:

  • (String, nil) 


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# File 'lib/graphql/schema.rb', line 292

def description(new_description = nil)
  if new_description
    @description = new_description
  elsif defined?(@description)
    @description
  else
    find_inherited_value(:description, nil)
  end
end

.detailed_trace?(query) ⇒ Boolean

Returns When true, save a detailed trace for this query.

Parameters:

Returns:

  • (Boolean) —

    When true, save a detailed trace for this query.

See Also:



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# File 'lib/graphql/schema.rb', line 1390

def detailed_trace?(query)
  raise "#{self} must implement `def.detailed_trace?(query)` to use DetailedTrace. Implement this method in your schema definition."
end

.did_you_mean(new_dym = NOT_CONFIGURED) ⇒ Object

Returns DidYouMean if it’s defined. Override this to return nil if you don’t want to use DidYouMean



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# File 'lib/graphql/schema.rb', line 1672

def did_you_mean(new_dym = NOT_CONFIGURED)
  if NOT_CONFIGURED.equal?(new_dym)
    if defined?(@did_you_mean)
      @did_you_mean
    else
      find_inherited_value(:did_you_mean, defined?(DidYouMean) ? DidYouMean : nil)
    end
  else
    @did_you_mean = new_dym
  end
end

.directive(new_directive) ⇒ Object

Attach a single directive to this schema

Parameters:

  • new_directive (Class)

Returns:

  • void



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# File 'lib/graphql/schema.rb', line 1366

def directive(new_directive)
  if use_visibility_profile?
    own_directives[new_directive.graphql_name] = new_directive
  else
    add_type_and_traverse(new_directive, root: false)
  end
end

.directives(*new_directives) ⇒ Object

Add several directives at once

Parameters:

  • new_directives (Class) 


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# File 'lib/graphql/schema.rb', line 1350

def directives(*new_directives)
  if !new_directives.empty?
    new_directives.flatten.each { |d| directive(d) }
  end

  inherited_dirs = find_inherited_value(:directives, default_directives)
  if !own_directives.empty?
    inherited_dirs.merge(own_directives)
  else
    inherited_dirs
  end
end

.disable_introspection_entry_points ⇒ Object 



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# File 'lib/graphql/schema.rb', line 929

def disable_introspection_entry_points
  @disable_introspection_entry_points = true
  # TODO: this clears the cache made in `def types`. But this is not a great solution.
  @introspection_system = nil
end

.disable_introspection_entry_points? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/graphql/schema.rb', line 947

def disable_introspection_entry_points?
  if instance_variable_defined?(:@disable_introspection_entry_points)
    @disable_introspection_entry_points
  else
    find_inherited_value(:disable_introspection_entry_points?, false)
  end
end

.disable_schema_introspection_entry_point ⇒ Object 



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# File 'lib/graphql/schema.rb', line 935

def disable_schema_introspection_entry_point
  @disable_schema_introspection_entry_point = true
  # TODO: this clears the cache made in `def types`. But this is not a great solution.
  @introspection_system = nil
end

.disable_schema_introspection_entry_point? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/graphql/schema.rb', line 955

def disable_schema_introspection_entry_point?
  if instance_variable_defined?(:@disable_schema_introspection_entry_point)
    @disable_schema_introspection_entry_point
  else
    find_inherited_value(:disable_schema_introspection_entry_point?, false)
  end
end

.disable_type_introspection_entry_point ⇒ Object 



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# File 'lib/graphql/schema.rb', line 941

def disable_type_introspection_entry_point
  @disable_type_introspection_entry_point = true
  # TODO: this clears the cache made in `def types`. But this is not a great solution.
  @introspection_system = nil
end

.disable_type_introspection_entry_point? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/graphql/schema.rb', line 963

def disable_type_introspection_entry_point?
  if instance_variable_defined?(:@disable_type_introspection_entry_point)
    @disable_type_introspection_entry_point
  else
    find_inherited_value(:disable_type_introspection_entry_point?, false)
  end
end

.error_handlers ⇒ Object 



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# File 'lib/graphql/schema.rb', line 1116

def error_handlers
  @error_handlers ||= {
    class: nil,
    handler: nil,
    subclass_handlers: Hash.new(&NEW_HANDLER_HASH),
  }
end

.execute(query_str = nil, **kwargs) ⇒ GraphQL::Query::Result

Execute a query on itself.

Returns:

See Also:

  • for arguments.


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# File 'lib/graphql/schema.rb', line 1542

def execute(query_str = nil, **kwargs)
  if query_str
    kwargs[:query] = query_str
  end
  # Some of the query context _should_ be passed to the multiplex, too
  multiplex_context = if (ctx = kwargs[:context])
    {
      backtrace: ctx[:backtrace],
      tracers: ctx[:tracers],
      trace: ctx[:trace],
      dataloader: ctx[:dataloader],
      trace_mode: ctx[:trace_mode],
    }
  else
    {}
  end
  # Since we're running one query, don't run a multiplex-level complexity analyzer
  all_results = multiplex([kwargs], max_complexity: nil, context: multiplex_context)
  all_results[0]
end

.extra_types(*new_extra_types) ⇒ Array<Module>

Returns Type definitions added to this schema.

Parameters:

  • new_extra_types (Module) —

    Type definitions to include in printing and introspection, even though they aren’t referenced in the schema

Returns:

  • (Array<Module>) —

    Type definitions added to this schema



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# File 'lib/graphql/schema.rb', line 973

def extra_types(*new_extra_types)
  if !new_extra_types.empty?
    new_extra_types = new_extra_types.flatten
    @own_extra_types ||= []
    @own_extra_types.concat(new_extra_types)
  end
  inherited_et = find_inherited_value(:extra_types, nil)
  if inherited_et
    if @own_extra_types
      inherited_et + @own_extra_types
    else
      inherited_et
    end
  else
    @own_extra_types || EMPTY_ARRAY
  end
end

.find(path) ⇒ Object 



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# File 'lib/graphql/schema.rb', line 302

def find(path)
  if !@finder
    @find_cache = {}
    @finder ||= GraphQL::Schema::Finder.new(self)
  end
  @find_cache[path] ||= @finder.find(path)
end

.from_definition(definition_or_path, default_resolve: nil, parser: GraphQL.default_parser, using: {}, base_types: {}) ⇒ Class

Create schema from an IDL schema or file containing an IDL definition.

Parameters:

  • definition_or_path (String) —

    A schema definition string, or a path to a file containing the definition

  • default_resolve (<#call(type, field, obj, args, ctx)>) (defaults to: nil) —

    A callable for handling field resolution

  • parser (Object) (defaults to: GraphQL.default_parser) —

    An object for handling definition string parsing (must respond to parse)

  • using (Hash) (defaults to: {}) —

    Plugins to attach to the created schema with use(key, value)

Returns:

  • (Class) —

    the schema described by document



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# File 'lib/graphql/schema.rb', line 114

def from_definition(definition_or_path, default_resolve: nil, parser: GraphQL.default_parser, using: {}, base_types: {})
  # If the file ends in `.graphql` or `.graphqls`, treat it like a filepath
  if definition_or_path.end_with?(".graphql") || definition_or_path.end_with?(".graphqls")
    GraphQL::Schema::BuildFromDefinition.from_definition_path(
      self,
      definition_or_path,
      default_resolve: default_resolve,
      parser: parser,
      using: using,
      base_types: base_types,
    )
  else
    GraphQL::Schema::BuildFromDefinition.from_definition(
      self,
      definition_or_path,
      default_resolve: default_resolve,
      parser: parser,
      using: using,
      base_types: base_types,
    )
  end
end

.from_introspection(introspection_result) ⇒ Class<GraphQL::Schema>

Create schema with the result of an introspection query.

Parameters:

Returns:



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# File 'lib/graphql/schema.rb', line 104

def from_introspection(introspection_result)
  GraphQL::Schema::Loader.load(introspection_result)
end

.get_field(type_or_name, field_name, context = GraphQL::Query::NullContext.instance) ⇒ Object 



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# File 'lib/graphql/schema.rb', line 700

def get_field(type_or_name, field_name, context = GraphQL::Query::NullContext.instance)
  parent_type = case type_or_name
  when LateBoundType
    get_type(type_or_name.name, context)
  when String
    get_type(type_or_name, context)
  when Module
    type_or_name
  else
    raise GraphQL::InvariantError, "Unexpected field owner for #{field_name.inspect}: #{type_or_name.inspect} (#{type_or_name.class})"
  end

  if parent_type.kind.fields? && (field = parent_type.get_field(field_name, context))
    field
  elsif parent_type == query && (entry_point_field = introspection_system.entry_point(name: field_name))
    entry_point_field
  elsif (dynamic_field = introspection_system.dynamic_field(name: field_name))
    dynamic_field
  else
    nil
  end
end

.get_fields(type, context = GraphQL::Query::NullContext.instance) ⇒ Object 



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# File 'lib/graphql/schema.rb', line 723

def get_fields(type, context = GraphQL::Query::NullContext.instance)
  type.fields(context)
end

.get_type(type_name, context = GraphQL::Query::NullContext.instance, use_visibility_profile = use_visibility_profile?) ) ⇒ Module?

Returns A type, or nil if there’s no type called type_name.

Parameters:

  • type_name (String)
  • context (GraphQL::Query::Context) (defaults to: GraphQL::Query::NullContext.instance) —

    Used for filtering definitions at query-time

  • use_visibility_profile (defaults to: use_visibility_profile?) ) —

    Private, for migration to Visibility

Returns:

  • (Module, nil) —

    A type, or nil if there’s no type called type_name



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# File 'lib/graphql/schema.rb', line 366

def get_type(type_name, context = GraphQL::Query::NullContext.instance, use_visibility_profile = use_visibility_profile?)
  if use_visibility_profile
    return Visibility::Profile.from_context(context, self).type(type_name)
  end
  local_entry = own_types[type_name]
  type_defn = case local_entry
  when nil
    nil
  when Array
    if context.respond_to?(:types) && context.types.is_a?(GraphQL::Schema::Visibility::Profile)
      local_entry
    else
      visible_t = nil
      warden = Warden.from_context(context)
      local_entry.each do |t|
        if warden.visible_type?(t, context)
          if visible_t.nil?
            visible_t = t
          else
            raise DuplicateNamesError.new(
              duplicated_name: type_name, duplicated_definition_1: visible_t.inspect, duplicated_definition_2: t.inspect
            )
          end
        end
      end
      visible_t
    end
  when Module
    local_entry
  else
    raise "Invariant: unexpected own_types[#{type_name.inspect}]: #{local_entry.inspect}"
  end

  type_defn ||
    introspection_system.types[type_name] || # todo context-specific introspection?
    (superclass.respond_to?(:get_type) ? superclass.get_type(type_name, context, use_visibility_profile) : nil)
end

.handle_or_reraise(context, err) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/graphql/schema.rb', line 1128

def handle_or_reraise(context, err)
  handler = Execution::Errors.find_handler_for(self, err.class)
  if handler
    obj = context[:current_object]
    args = context[:current_arguments]
    args = args && args.respond_to?(:keyword_arguments) ? args.keyword_arguments : nil
    field = context[:current_field]
    if obj.is_a?(GraphQL::Schema::Object)
      obj = obj.object
    end
    handler[:handler].call(err, obj, args, context, field)
  else
    if (context[:backtrace] || using_backtrace) && !err.is_a?(GraphQL::ExecutionError)
      err = GraphQL::Backtrace::TracedError.new(err, context)
    end

    raise err
  end
end

.has_defined_type?(type_name) ⇒ Boolean

Returns Does this schema have any definition for a type named type_name, regardless of visibility?.

Returns:

  • (Boolean) —

    Does this schema have any definition for a type named type_name, regardless of visibility?



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# File 'lib/graphql/schema.rb', line 405

def has_defined_type?(type_name)
  own_types.key?(type_name) || introspection_system.types.key?(type_name) || (superclass.respond_to?(:has_defined_type?) ? superclass.has_defined_type?(type_name) : false)
end

.id_from_object(application_object, graphql_type, context) ⇒ String

Return a stable ID string for object so that it can be refetched later, using object_from_id.

GlobalID and SQIDs can both be used to create IDs.

Examples:

Using Rails’s GlobalID to generate IDs

def self.id_from_object(application_object, graphql_type, context)
  application_object.to_gid_param
end

Parameters:

  • application_object (Object) —

    Some object encountered by GraphQL-Ruby while running a query

  • graphql_type (Class, Module) —

    The type that GraphQL-Ruby is using for application_object during this query

  • context (GraphQL::Query::Context) —

    The context for the operation that is currently running

Returns:

  • (String) —

    A stable identifier which can be passed to object_from_id later to re-fetch application_object

Raises:



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# File 'lib/graphql/schema.rb', line 1244

def id_from_object(application_object, graphql_type, context)
  raise GraphQL::RequiredImplementationMissingError, "#{self.name}.id_from_object(application_object, graphql_type, context) must be implemented to create global ids (tried to create an id for `#{application_object.inspect}`)"
end

.inherited(child_class) ⇒ Object

rubocop:enable Lint/DuplicateMethods



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# File 'lib/graphql/schema.rb', line 1196

def inherited(child_class)
  if self == GraphQL::Schema
    child_class.directives(default_directives.values)
    child_class.extend(SubclassGetReferencesTo)
  end
  # Make sure the child class has these built out, so that
  # subclasses can be modified by later calls to `trace_with`
  own_trace_modes.each do |name, _class|
    child_class.own_trace_modes[name] = child_class.build_trace_mode(name)
  end
  child_class.singleton_class.prepend(ResolveTypeWithType)

  if use_visibility_profile?
    vis = self.visibility
    child_class.visibility = vis.dup_for(child_class)
  end
  super
end

.instrument(instrument_step, instrumenter, options = {}) ⇒ Object 



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# File 'lib/graphql/schema.rb', line 1338

def instrument(instrument_step, instrumenter, options = {})
  warn <<~WARN
  Schema.instrument is deprecated, use `trace_with` instead: https://graphql-ruby.org/queries/tracing.html"
    (From `#{self}.instrument(#{instrument_step}, #{instrumenter})` at #{caller(1, 1).first})

  WARN
  trace_with(Tracing::LegacyHooksTrace)
  own_instrumenters[instrument_step] << instrumenter
end

.instrumenters ⇒ Object 



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# File 'lib/graphql/schema.rb', line 1587

def instrumenters
  inherited_instrumenters = find_inherited_value(:instrumenters) || Hash.new { |h,k| h[k] = [] }
  inherited_instrumenters.merge(own_instrumenters) do |_step, inherited, own|
    inherited + own
  end
end

.introspection(new_introspection_namespace = nil) ⇒ Module?

Pass a custom introspection module here to use it for this schema.

Parameters:

  • new_introspection_namespace (Module) (defaults to: nil) —

    If given, use this module for custom introspection on the schema

Returns:

  • (Module, nil) —

    The configured namespace, if there is one



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# File 'lib/graphql/schema.rb', line 730

def introspection(new_introspection_namespace = nil)
  if new_introspection_namespace
    @introspection = new_introspection_namespace
    # reset this cached value:
    @introspection_system = nil
    introspection_system
    @introspection
  else
    @introspection || find_inherited_value(:introspection)
  end
end

.introspection_system ⇒ Schema::IntrospectionSystem

Returns Based on introspection.

Returns:



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# File 'lib/graphql/schema.rb', line 743

def introspection_system
  if !@introspection_system
    @introspection_system = Schema::IntrospectionSystem.new(self)
    @introspection_system.resolve_late_bindings
    self.visibility&.introspection_system_configured(@introspection_system)
  end
  @introspection_system
end

.lazy?(obj) ⇒ Boolean

Returns True if this object should be lazily resolved.

Returns:

  • (Boolean) —

    True if this object should be lazily resolved



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# File 'lib/graphql/schema.rb', line 1652

def lazy?(obj)
  !!lazy_method_name(obj)
end

.lazy_method_name(obj) ⇒ Symbol?

Returns The method name to lazily resolve obj, or nil if obj’s class wasn’t registered with lazy_resolve.

Returns:

  • (Symbol, nil) —

    The method name to lazily resolve obj, or nil if obj’s class wasn’t registered with lazy_resolve.



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# File 'lib/graphql/schema.rb', line 1647

def lazy_method_name(obj)
  lazy_methods.get(obj)
end

.lazy_resolve(lazy_class, value_method) ⇒ Object 



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# File 'lib/graphql/schema.rb', line 1334

def lazy_resolve(lazy_class, value_method)
  lazy_methods.set(lazy_class, value_method)
end

.legacy_complexity_cost_calculation_mismatch(multiplex, future_complexity_cost, legacy_complexity_cost) ⇒ Integer

Implement this method in your schema to handle mismatches when :compare is used.

Examples:

Logging the mismatch

def self.legacy_cost_calculation_mismatch(multiplex, future_cost, legacy_cost)
  client_id = multiplex.context[:api_client].id
  operation_names = multiplex.queries.map { |q| q.selected_operation_name || "anonymous" }.join(", ")
  Stats.increment(:complexity_mismatch, tags: { client: client_id, ops: operation_names })
  legacy_cost
end

Parameters:

Returns:

  • (Integer) —

    the cost to use for this query (probably one of future_complexity_cost or legacy_complexity_cost)

See Also:



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# File 'lib/graphql/schema.rb', line 1832

def legacy_complexity_cost_calculation_mismatch(multiplex, future_complexity_cost, legacy_complexity_cost)
  raise "Implement #{self}.legacy_complexity_cost(multiplex, future_complexity_cost, legacy_complexity_cost) to handle this mismatch (#{future_complexity_cost} vs. #{legacy_complexity_cost}) and return a value to use"
end

.legacy_invalid_empty_selections_on_union(query) ⇒ :return_validation_error, ...

This method is called during validation when a previously-allowed, but non-spec query is encountered where a union field has no child selections on it.

You should implement this method to log the violation so that you can contact clients and notify them about changing their queries. Then return a suitable value to tell GraphQL-Ruby how to continue.

Parameters:

Returns:

  • (:return_validation_error) —

    Let GraphQL-Ruby return the (new) normal validation error for this query

  • (String) —

    A validation error to return for this query

  • (nil) —

    Don’t send the client an error, continue the legacy behavior (allow this query to execute)



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# File 'lib/graphql/schema.rb', line 1714

def legacy_invalid_empty_selections_on_union(query)
  raise "Implement `def self.legacy_invalid_empty_selections_on_union(query)` to handle this scenario"
end

.legacy_invalid_return_type_conflicts(query, type1, type2, node1, node2) ⇒ :return_validation_error, ...

This method is called when the query contains fields which don’t contain matching scalar types. This was previously allowed by GraphQL-Ruby but it’s a violation of the GraphQL spec.

You should implement this method to log the violation so that you observe usage of these fields. Fixing this scenario might mean adding new fields, and telling clients to use those fields. (Changing the field return type would be a breaking change, but if it works for your client use cases, that might work, too.)

Parameters:

Returns:

  • (:return_validation_error) —

    Let GraphQL-Ruby return the (new) normal validation error for this query

  • (String) —

    A validation error to return for this query

  • (nil) —

    Don’t send the client an error, continue the legacy behavior (allow this query to execute)



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# File 'lib/graphql/schema.rb', line 1751

def legacy_invalid_return_type_conflicts(query, type1, type2, node1, node2)
  raise "Implement #{self}.legacy_invalid_return_type_conflicts to handle this invalid selection"
end

.load_type(type_name, ctx) ⇒ Object

Called when a type is needed by name at runtime



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# File 'lib/graphql/schema.rb', line 1262

def load_type(type_name, ctx)
  get_type(type_name, ctx)
end

.logger_for(context) ⇒ Logger

Returns A logger to use for this context configuration, falling back to default_logger.

Parameters:

Returns:

  • (Logger) —

    A logger to use for this context configuration, falling back to default_logger



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# File 'lib/graphql/schema.rb', line 1069

def logger_for(context)
  if context && context[:logger] == false
    Logger.new(IO::NULL)
  elsif context && (l = context[:logger])
    l
  else
    default_logger
  end
end

.max_complexity_count_introspection_fields ⇒ Object 



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# File 'lib/graphql/schema.rb', line 883

def max_complexity_count_introspection_fields
  if defined?(@max_complexity_count_introspection_fields)
    @max_complexity_count_introspection_fields
  else
    find_inherited_value(:max_complexity_count_introspection_fields, true)
  end
end

.max_query_string_tokens(new_max_tokens = NOT_CONFIGURED) ⇒ nil, Integer

A limit on the number of tokens to accept on incoming query strings. Use this to prevent parsing maliciously-large query strings.

Returns:

  • (nil, Integer) 


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# File 'lib/graphql/schema.rb', line 770

def max_query_string_tokens(new_max_tokens = NOT_CONFIGURED)
  if NOT_CONFIGURED.equal?(new_max_tokens)
    defined?(@max_query_string_tokens) ? @max_query_string_tokens : find_inherited_value(:max_query_string_tokens)
  else
    @max_query_string_tokens = new_max_tokens
  end
end

.multiplex(queries, **kwargs) ⇒ Array<GraphQL::Query::Result>

Execute several queries on itself, concurrently.

Examples:

Run several queries at once

context = { ... }
queries = [
  { query: params[:query_1], variables: params[:variables_1], context: context },
  { query: params[:query_2], variables: params[:variables_2], context: context },
]
results = MySchema.multiplex(queries)
render json: {
  result_1: results[0],
  result_2: results[1],
}

Parameters:

  • queries (Array<Hash>) —

    Keyword arguments for each query

  • kwargs (Hash) —

    a customizable set of options

Options Hash (**kwargs):

  • :context (Hash) — default: {} —

    Multiplex-level context

  • :max_complexity (nil, Integer) — default: nil

Returns:

See Also:

  • for query keyword arguments
  • for multiplex keyword arguments


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# File 'lib/graphql/schema.rb', line 1583

def multiplex(queries, **kwargs)
  GraphQL::Execution::Interpreter.run_all(self, queries, **kwargs)
end

.multiplex_analyzer(new_analyzer) ⇒ Object

Parameters:

See Also:



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# File 'lib/graphql/schema.rb', line 1523

def multiplex_analyzer(new_analyzer)
  own_multiplex_analyzers << new_analyzer
end

.multiplex_analyzers ⇒ Object 



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# File 'lib/graphql/schema.rb', line 1527

def multiplex_analyzers
  find_inherited_value(:multiplex_analyzers, EMPTY_ARRAY) + own_multiplex_analyzers
end

.mutation(new_mutation_object = nil, &lazy_load_block) ⇒ Class<GraphQL::Schema::Object>?

Get or set the root mutation { ... } object for this schema.

Examples:

Using Types::Mutation as the entry-point

mutation { Types::Mutation }

Parameters:

  • new_mutation_object (Class<GraphQL::Schema::Object>) (defaults to: nil) —

    The root type to use for mutations

  • lazy_load_block —

    If a block is given, then it will be called when GraphQL-Ruby needs the root mutation type.

Returns:



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# File 'lib/graphql/schema.rb', line 475

def mutation(new_mutation_object = nil, &lazy_load_block)
  if new_mutation_object || block_given?
    if @mutation_object
      dup_defn = new_mutation_object || yield
      raise GraphQL::Error, "Second definition of `mutation(...)` (#{dup_defn.inspect}) is invalid, already configured with #{@mutation_object.inspect}"
    elsif use_visibility_profile?
      if block_given?
        if visibility.preload?
          @mutation_object = lazy_load_block.call
          self.visibility.mutation_configured(@mutation_object)
        else
          @mutation_object = lazy_load_block
        end
      else
        @mutation_object = new_mutation_object
        self.visibility.mutation_configured(@mutation_object)
      end
    else
      @mutation_object = new_mutation_object || lazy_load_block.call
      add_type_and_traverse(@mutation_object, root: true)
    end
    nil
  elsif @mutation_object.is_a?(Proc)
    @mutation_object = @mutation_object.call
    self.visibility&.mutation_configured(@mutation_object)
    @mutation_object
  else
    @mutation_object || find_inherited_value(:mutation)
  end
end

.mutation_execution_strategy(new_mutation_execution_strategy = nil, deprecation_warning: true) ⇒ Object 



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# File 'lib/graphql/schema.rb', line 798

def mutation_execution_strategy(new_mutation_execution_strategy = nil, deprecation_warning: true)
  if deprecation_warning
    warn "GraphQL::Schema.mutation_execution_strategy is deprecated without replacement. Use `GraphQL::Query.new` directly to create and execute a custom query instead."
      warn "  #{caller(1, 1).first}"
  end
  if new_mutation_execution_strategy
    @mutation_execution_strategy = new_mutation_execution_strategy
  else
    @mutation_execution_strategy || (superclass.respond_to?(:mutation_execution_strategy) ? superclass.mutation_execution_strategy(deprecation_warning: false) : self.default_execution_strategy)
  end
end

.new_trace(mode: nil, **options) ⇒ Tracing::Trace

Create a trace instance which will include the trace modules specified for the optional mode.

If no mode: is given, then default_trace_mode will be used.

If this schema is using Tracing::DetailedTrace and detailed_trace? returns true, then DetailedTrace’s mode will override the passed-in mode.

Parameters:

  • mode (Symbol) (defaults to: nil) —

    Trace modules for this trade mode will be included

  • options (Hash) —

    Keywords that will be passed to the tracing class during #initialize

Returns:



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# File 'lib/graphql/schema.rb', line 1482

def new_trace(mode: nil, **options)
  should_sample = if detailed_trace
    if (query = options[:query])
      detailed_trace?(query)
    elsif (multiplex = options[:multiplex])
      if multiplex.queries.length == 1
        detailed_trace?(multiplex.queries.first)
      else
        detailed_trace?(multiplex)
      end
    end
  else
    false
  end

  if should_sample
    mode = detailed_trace.trace_mode
  else
    target = options[:query] || options[:multiplex]
    mode ||= target && target.context[:trace_mode]
  end

  trace_mode = mode || default_trace_mode
  base_trace_options = trace_options_for(trace_mode)
  trace_options = base_trace_options.merge(options)
  trace_class_for_mode = trace_class_for(trace_mode, build: true)
  trace_class_for_mode.new(**trace_options)
end

.object_from_id(object_id, context) ⇒ Object?

Fetch an object based on an incoming ID and the current context. This method should return an object from your application, or return nil if there is no object or the object shouldn’t be available to this operation.

Examples:

Fetching an object with Rails’s GlobalID

def self.object_from_id(object_id, _context)
  GlobalID.find(global_id)
  # TODO: use `context[:current_user]` to determine if this object is authorized.
end

Parameters:

  • object_id (String) —

    The ID to fetch an object for. This may be client-provided (as in node(id: ...) or loads:) or previously stored by the schema (eg, by the ObjectCache)

  • context (GraphQL::Query::Context) —

    The context for the currently-executing operation

Returns:

  • (Object, nil) —

    The application which object_id references, or nil if there is no object or the current operation shouldn’t have access to the object

Raises:

See Also:



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# File 'lib/graphql/schema.rb', line 1227

def object_from_id(object_id, context)
  raise GraphQL::RequiredImplementationMissingError, "#{self.name}.object_from_id(object_id, context) must be implemented to load by ID (tried to load from id `#{object_id}`)"
end

.orphan_types(*new_orphan_types) ⇒ Array<Class<GraphQL::Schema::Object>>

Tell the schema about these types so that they can be registered as implementations of interfaces in the schema.

This method must be used when an object type is connected to the schema as an interface implementor but not as a return type of a field. In that case, if the object type isn’t registered here, GraphQL-Ruby won’t be able to find it.

Parameters:

  • new_orphan_types (Array<Class<GraphQL::Schema::Object>>) —

    Object types to register as implementations of interfaces in the schema.

Returns:



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# File 'lib/graphql/schema.rb', line 998

def orphan_types(*new_orphan_types)
  if !new_orphan_types.empty?
    new_orphan_types = new_orphan_types.flatten
    non_object_types = new_orphan_types.reject { |ot| ot.is_a?(Class) && ot < GraphQL::Schema::Object }
    if !non_object_types.empty?
      raise ArgumentError, <<~ERR
        Only object type classes should be added as `orphan_types(...)`.

        - Remove these no-op types from `orphan_types`: #{non_object_types.map { |t| "#{t.inspect} (#{t.kind.name})"}.join(", ")}
        - See https://graphql-ruby.org/type_definitions/interfaces.html#orphan-types

        To add other types to your schema, you might want `extra_types`: https://graphql-ruby.org/schema/definition.html#extra-types
      ERR
    end
    add_type_and_traverse(new_orphan_types, root: false) unless use_visibility_profile?
    own_orphan_types.concat(new_orphan_types.flatten)
    self.visibility&.orphan_types_configured(new_orphan_types)
  end

  inherited_ot = find_inherited_value(:orphan_types, nil)
  if inherited_ot
    if !own_orphan_types.empty?
      inherited_ot + own_orphan_types
    else
      inherited_ot
    end
  else
    own_orphan_types
  end
end

.own_trace_modes ⇒ Object 



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# File 'lib/graphql/schema.rb', line 205

def own_trace_modes
  @own_trace_modes ||= {}
end

.own_trace_modules ⇒ Object 



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# File 'lib/graphql/schema.rb', line 237

def own_trace_modules
  @own_trace_modules ||= Hash.new { |h, k| h[k] = [] }
end

.parse_error(parse_err, ctx) ⇒ Object

A function to call when execute receives an invalid query string

The default is to add the error to context.errors

Parameters:

Returns:

  • void



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# File 'lib/graphql/schema.rb', line 1330

def parse_error(parse_err, ctx)
  ctx.errors.push(parse_err)
end

.plugins ⇒ Object 



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# File 'lib/graphql/schema.rb', line 326

def plugins
  find_inherited_value(:plugins, EMPTY_ARRAY) + own_plugins
end

.possible_types(type = nil, context = GraphQL::Query::NullContext.instance, use_visibility_profile = use_visibility_profile?) ) ⇒ Hash<String, Module>, Array<Module>

Parameters:

  • type (Module) (defaults to: nil) —

    The type definition whose possible types you want to see

  • context (GraphQL::Query::Context) (defaults to: GraphQL::Query::NullContext.instance) —

    used for filtering visible possible types at runtime

  • use_visibility_profile (defaults to: use_visibility_profile?) ) —

    Private, for migration to Visibility

Returns:

  • (Hash<String, Module>) —

    All possible types, if no type is given.

  • (Array<Module>) —

    Possible types for type, if it’s given.



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# File 'lib/graphql/schema.rb', line 616

def possible_types(type = nil, context = GraphQL::Query::NullContext.instance, use_visibility_profile = use_visibility_profile?)
  if use_visibility_profile
    if type
      return Visibility::Profile.from_context(context, self).possible_types(type)
    else
      raise "Schema.possible_types is not implemented for `use_visibility_profile?`"
    end
  end
  if type
    # TODO duck-typing `.possible_types` would probably be nicer here
    if type.kind.union?
      type.possible_types(context: context)
    else
      stored_possible_types = own_possible_types[type]
      visible_possible_types = if stored_possible_types && type.kind.interface?
        stored_possible_types.select do |possible_type|
          possible_type.interfaces(context).include?(type)
        end
      else
        stored_possible_types
      end
      visible_possible_types ||
        introspection_system.possible_types[type] ||
        (
          superclass.respond_to?(:possible_types) ?
            superclass.possible_types(type, context, use_visibility_profile) :
            EMPTY_ARRAY
        )
    end
  else
    find_inherited_value(:possible_types, EMPTY_HASH)
      .merge(own_possible_types)
      .merge(introspection_system.possible_types)
  end
end

.query(new_query_object = nil, &lazy_load_block) ⇒ Class<GraphQL::Schema::Object>?

Get or set the root query { ... } object for this schema.

Examples:

Using Types::Query as the entry-point

query { Types::Query }

Parameters:

  • new_query_object (Class<GraphQL::Schema::Object>) (defaults to: nil) —

    The root type to use for queries

  • lazy_load_block —

    If a block is given, then it will be called when GraphQL-Ruby needs the root query type.

Returns:



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# File 'lib/graphql/schema.rb', line 436

def query(new_query_object = nil, &lazy_load_block)
  if new_query_object || block_given?
    if @query_object
      dup_defn = new_query_object || yield
      raise GraphQL::Error, "Second definition of `query(...)` (#{dup_defn.inspect}) is invalid, already configured with #{@query_object.inspect}"
    elsif use_visibility_profile?
      if block_given?
        if visibility.preload?
          @query_object = lazy_load_block.call
          self.visibility.query_configured(@query_object)
        else
          @query_object = lazy_load_block
        end
      else
        @query_object = new_query_object
        self.visibility.query_configured(@query_object)
      end
    else
      @query_object = new_query_object || lazy_load_block.call
      add_type_and_traverse(@query_object, root: true)
    end
    nil
  elsif @query_object.is_a?(Proc)
    @query_object = @query_object.call
    self.visibility&.query_configured(@query_object)
    @query_object
  else
    @query_object || find_inherited_value(:query)
  end
end

.query_analyzer(new_analyzer) ⇒ Object

Parameters:

See Also:



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# File 'lib/graphql/schema.rb', line 1513

def query_analyzer(new_analyzer)
  own_query_analyzers << new_analyzer
end

.query_analyzers ⇒ Object 



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# File 'lib/graphql/schema.rb', line 1517

def query_analyzers
  find_inherited_value(:query_analyzers, EMPTY_ARRAY) + own_query_analyzers
end

.query_class(new_query_class = NOT_CONFIGURED) ⇒ Object

Parameters:

  • new_query_class (Class<GraphQL::Query>) (defaults to: NOT_CONFIGURED) —

    A subclass to use when executing queries



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# File 'lib/graphql/schema.rb', line 852

def query_class(new_query_class = NOT_CONFIGURED)
  if NOT_CONFIGURED.equal?(new_query_class)
    @query_class || (superclass.respond_to?(:query_class) ? superclass.query_class : GraphQL::Query)
  else
    @query_class = new_query_class
  end
end

.query_execution_strategy(new_query_execution_strategy = nil, deprecation_warning: true) ⇒ Object 



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# File 'lib/graphql/schema.rb', line 786

def query_execution_strategy(new_query_execution_strategy = nil, deprecation_warning: true)
  if deprecation_warning
    warn "GraphQL::Schema.query_execution_strategy is deprecated without replacement. Use `GraphQL::Query.new` directly to create and execute a custom query instead."
    warn "  #{caller(1, 1).first}"
  end
  if new_query_execution_strategy
    @query_execution_strategy = new_query_execution_strategy
  else
    @query_execution_strategy || (superclass.respond_to?(:query_execution_strategy) ? superclass.query_execution_strategy(deprecation_warning: false) : self.default_execution_strategy)
  end
end

.query_stack_error(query, err) ⇒ void

This method returns an undefined value.

Called when execution encounters a SystemStackError. By default, it adds a client-facing error to the response. You could modify this method to report this error to your bug tracker.

Parameters:



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# File 'lib/graphql/schema.rb', line 1612

def query_stack_error(query, err)
  query.context.errors.push(GraphQL::ExecutionError.new("This query is too large to execute."))
end

.references_to(to_type = nil, from: nil) ⇒ Object 



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# File 'lib/graphql/schema.rb', line 675

def references_to(to_type = nil, from: nil)
  if to_type
    if from
      refs = own_references_to[to_type] ||= []
      refs << from
    else
      get_references_to(to_type) || EMPTY_ARRAY
    end
  else
    # `@own_references_to` can be quite large for big schemas,
    # and generally speaking, we won't inherit any values.
    # So optimize the most common case -- don't create a duplicate Hash.
    inherited_value = find_inherited_value(:references_to, EMPTY_HASH)
    if !inherited_value.empty?
      inherited_value.merge(own_references_to)
    else
      own_references_to
    end
  end
end

.rescue_from(*err_classes, &handler_block) {|error, object, arguments, context| ... } ⇒ Object

Register a handler for errors raised during execution. The handlers can return a new value or raise a new error.

Examples:

Handling “not found” with a client-facing error

rescue_from(ActiveRecord::NotFound) { raise GraphQL::ExecutionError, "An object could not be found" }

Parameters:

  • err_classes (Array<StandardError>) —

    Classes which should be rescued by handler_block

  • handler_block —

    The code to run when one of those errors is raised during execution

Yield Parameters:

  • error (StandardError) —

    An instance of one of the configured err_classes

  • object (Object) —

    The current application object in the query when the error was raised

  • arguments (GraphQL::Query::Arguments) —

    The current field arguments when the error was raised

  • context (GraphQL::Query::Context) —

    The context for the currently-running operation

Yield Returns:

  • (Object) —

    Some object to use in the place where this error was raised

Raises:

  • (GraphQL::ExecutionError) —

    In the handler, raise to add a client-facing error to the response

  • (StandardError) —

    In the handler, raise to crash the query with a developer-facing error



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# File 'lib/graphql/schema.rb', line 1102

def rescue_from(*err_classes, &handler_block)
  err_classes.each do |err_class|
    Execution::Errors.register_rescue_from(err_class, error_handlers[:subclass_handlers], handler_block)
  end
end

.resolve_type(abstract_type, application_object, context) ⇒ Class<GraphQL::Schema::Object] The Object type definition to use for `obj`

GraphQL-Ruby calls this method during execution when it needs the application to determine the type to use for an object.

Usually, this object was returned from a field whose return type is an Interface or a Union. But this method is called in other cases, too – for example, when GraphQL::Schema::Argument#loads cases an object to be directly loaded from the database.

Examples:

Returning a GraphQL type based on the object’s class name

class MySchema < GraphQL::Schema
  def resolve_type(_abs_type, object, _context)
    graphql_type_name = "Types::#{object.class.name}Type"
    graphql_type_name.constantize # If this raises a NameError, then come implement special cases in this method
  end
end

Parameters:

  • abstract_type (Class, Module, nil) —

    The Interface or Union type which is being resolved, if there is one

  • application_object (Object) —

    The object returned from a field whose type must be determined

  • context (GraphQL::Query::Context) —

    The query context for the currently-executing query

Returns:

Raises:



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# File 'lib/graphql/schema.rb', line 1191

def resolve_type(abstract_type, application_object, context)
  raise GraphQL::RequiredImplementationMissingError, "#{self.name}.resolve_type(abstract_type, application_object, context) must be implemented to use Union types, Interface types, or `loads:` (tried to resolve: #{abstract_type.name})"
end

.root_type_for_operation(operation) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/graphql/schema.rb', line 549

def root_type_for_operation(operation)
  case operation
  when "query"
    query
  when "mutation"
    mutation
  when "subscription"
    subscription
  else
    raise ArgumentError, "unknown operation type: #{operation}"
  end
end

.root_types ⇒ Array<Class>

Returns The root types (query, mutation, subscription) defined for this schema.

Returns:

  • (Array<Class>) —

    The root types (query, mutation, subscription) defined for this schema



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# File 'lib/graphql/schema.rb', line 563

def root_types
  if use_visibility_profile?
    [query, mutation, subscription].compact
  else
    @root_types
  end
end

.sanitized_printer(new_sanitized_printer = nil) ⇒ Object 



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# File 'lib/graphql/schema.rb', line 1531

def sanitized_printer(new_sanitized_printer = nil)
  if new_sanitized_printer
    @own_sanitized_printer = new_sanitized_printer
  else
    @own_sanitized_printer || GraphQL::Language::SanitizedPrinter
  end
end

.schema_directive(dir_class, **options) ⇒ Object 



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# File 'lib/graphql/schema.rb', line 1252

def schema_directive(dir_class, **options)
  @own_schema_directives ||= []
  Member::HasDirectives.add_directive(self, @own_schema_directives, dir_class, options)
end

.schema_directives ⇒ Object 



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# File 'lib/graphql/schema.rb', line 1257

def schema_directives
  Member::HasDirectives.get_directives(self, @own_schema_directives, :schema_directives)
end

.static_validator ⇒ Object 



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# File 'lib/graphql/schema.rb', line 310

def static_validator
  GraphQL::StaticValidation::Validator.new(schema: self)
end

.subscription(new_subscription_object = nil, &lazy_load_block) ⇒ Class<GraphQL::Schema::Object>?

Get or set the root subscription { ... } object for this schema.

Examples:

Using Types::Subscription as the entry-point

subscription { Types::Subscription }

Parameters:

  • new_subscription_object (Class<GraphQL::Schema::Object>) (defaults to: nil) —

    The root type to use for subscriptions

  • lazy_load_block —

    If a block is given, then it will be called when GraphQL-Ruby needs the root subscription type.

Returns:



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# File 'lib/graphql/schema.rb', line 514

def subscription(new_subscription_object = nil, &lazy_load_block)
  if new_subscription_object || block_given?
    if @subscription_object
      dup_defn = new_subscription_object || yield
      raise GraphQL::Error, "Second definition of `subscription(...)` (#{dup_defn.inspect}) is invalid, already configured with #{@subscription_object.inspect}"
    elsif use_visibility_profile?
      if block_given?
        if visibility.preload?
          @subscription_object = lazy_load_block.call
          visibility.subscription_configured(@subscription_object)
        else
          @subscription_object = lazy_load_block
        end
      else
        @subscription_object = new_subscription_object
        self.visibility.subscription_configured(@subscription_object)
      end
      add_subscription_extension_if_necessary
    else
      @subscription_object = new_subscription_object || lazy_load_block.call
      add_subscription_extension_if_necessary
      add_type_and_traverse(@subscription_object, root: true)
    end
    nil
  elsif @subscription_object.is_a?(Proc)
    @subscription_object = @subscription_object.call
    add_subscription_extension_if_necessary
    self.visibility.subscription_configured(@subscription_object)
    @subscription_object
  else
    @subscription_object || find_inherited_value(:subscription)
  end
end

.subscription_execution_strategy(new_subscription_execution_strategy = nil, deprecation_warning: true) ⇒ Object 



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# File 'lib/graphql/schema.rb', line 810

def subscription_execution_strategy(new_subscription_execution_strategy = nil, deprecation_warning: true)
  if deprecation_warning
    warn "GraphQL::Schema.subscription_execution_strategy is deprecated without replacement. Use `GraphQL::Query.new` directly to create and execute a custom query instead."
    warn "  #{caller(1, 1).first}"
  end
  if new_subscription_execution_strategy
    @subscription_execution_strategy = new_subscription_execution_strategy
  else
    @subscription_execution_strategy || (superclass.respond_to?(:subscription_execution_strategy) ? superclass.subscription_execution_strategy(deprecation_warning: false) : self.default_execution_strategy)
  end
end

.subscriptions(inherited: true) ⇒ GraphQL::Subscriptions

Returns:



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# File 'lib/graphql/schema.rb', line 142

def subscriptions(inherited: true)
  defined?(@subscriptions) ? @subscriptions : (inherited ? find_inherited_value(:subscriptions, nil) : nil)
end

.subscriptions=(new_implementation) ⇒ Object 



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# File 'lib/graphql/schema.rb', line 146

def subscriptions=(new_implementation)
  @subscriptions = new_implementation
end

.sync_lazy(value) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Override this method to handle lazy objects in a custom way.

Parameters:

Returns:

  • (Object) —

    A GraphQL-ready (non-lazy) object



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# File 'lib/graphql/schema.rb', line 1636

def sync_lazy(value)
  lazy_method = lazy_method_name(value)
  if lazy_method
    synced_value = value.public_send(lazy_method)
    sync_lazy(synced_value)
  else
    value
  end
end

.to_definition(context: {}) ⇒ String

Return the GraphQL IDL for the schema

Parameters:

  • context (Hash) (defaults to: {})

Returns:

  • (String) 


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# File 'lib/graphql/schema.rb', line 281

def to_definition(context: {})
  GraphQL::Schema::Printer.print_schema(self, context: context)
end

.to_document ⇒ GraphQL::Language::Document

Return the GraphQL::Language::Document IDL AST for the schema

Returns:

  • (GraphQL::Language::Document) 


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# File 'lib/graphql/schema.rb', line 287

def to_document
  GraphQL::Language::DocumentFromSchemaDefinition.new(self).document
end

.to_json(**args) ⇒ String

Returns the JSON response of Introspection::INTROSPECTION_QUERY.

Returns:

  • (String)

See Also:

  • Return a Hash representation of the schema


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# File 'lib/graphql/schema.rb', line 254

def to_json(**args)
  JSON.pretty_generate(as_json(**args))
end

.trace_class(new_class = nil) ⇒ Object 



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# File 'lib/graphql/schema.rb', line 163

def trace_class(new_class = nil)
  if new_class
    # If any modules were already added for `:default`,
    # re-apply them here
    mods = trace_modules_for(:default)
    mods.each { |mod| new_class.include(mod) }
    new_class.include(DefaultTraceClass)
    trace_mode(:default, new_class)
  end
  trace_class_for(:default, build: true)
end

.trace_class_for(mode, build: false) ⇒ Class

Return the trace class to use for this mode, looking one up on the superclass if this Schema doesn’t have one defined.

Returns:

  • (Class) —

    Return the trace class to use for this mode, looking one up on the superclass if this Schema doesn’t have one defined.



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# File 'lib/graphql/schema.rb', line 176

def trace_class_for(mode, build: false)
  if (trace_class = own_trace_modes[mode])
    trace_class
  elsif superclass.respond_to?(:trace_class_for) && (trace_class = superclass.trace_class_for(mode, build: false))
    trace_class
  elsif build
    own_trace_modes[mode] = build_trace_mode(mode)
  else
    nil
  end
end

.trace_mode(mode_name, trace_class) ⇒ Object

Configure trace_class to be used whenever context: { trace_mode: mode_name } is requested. default_trace_mode is used when no trace_mode: ... is requested.

When a trace_class is added this way, it will not receive other modules added with trace_with(...) unless trace_mode is explicitly given. (This class will not receive any default trace modules.)

Subclasses of the schema will use trace_class as a base class for this mode and those subclass also will not receive default tracing modules.

Parameters:

  • mode_name (Symbol)
  • trace_class (Class) —

    subclass of GraphQL::Tracing::Trace

Returns:

  • void



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# File 'lib/graphql/schema.rb', line 200

def trace_mode(mode_name, trace_class)
  own_trace_modes[mode_name] = trace_class
  nil
end

.trace_modules_for(trace_mode) ⇒ Array<Module>

Returns Modules added for tracing in trace_mode, including inherited ones.

Returns:

  • (Array<Module>) —

    Modules added for tracing in trace_mode, including inherited ones



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# File 'lib/graphql/schema.rb', line 242

def trace_modules_for(trace_mode)
  modules = own_trace_modules[trace_mode]
  if superclass.respond_to?(:trace_modules_for)
    modules += superclass.trace_modules_for(trace_mode)
  end
  modules
end

.trace_options_for(mode) ⇒ Hash

The options hash for this trace mode

Returns:

  • (Hash) 


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# File 'lib/graphql/schema.rb', line 1457

def trace_options_for(mode)
  @trace_options_for_mode ||= {}
  @trace_options_for_mode[mode] ||= begin
    # It may be time to create an options hash for a mode that wasn't registered yet.
    # Mix in the default options in that case.
    default_options = mode == :default ? EMPTY_HASH : trace_options_for(:default)
    # Make sure this returns a new object so that other hashes aren't modified later
    if superclass.respond_to?(:trace_options_for)
      superclass.trace_options_for(mode).merge(default_options)
    else
      default_options.dup
    end
  end
end

.trace_with(trace_mod, mode: :default, **options) ⇒ void

This method returns an undefined value.

Mix trace_mod into this schema’s Trace class so that its methods will be called at runtime.

You can attach a module to run in only some circumstances by using mode:. When a module is added with mode:, it will only run for queries with a matching context[:trace_mode].

Any custom trace modes also include the default trace_with ... modules (that is, those added without any particular mode: ... configuration).

Examples:

Adding a trace in a special mode

# only runs when `query.context[:trace_mode]` is `:special`
trace_with SpecialTrace, mode: :special

Parameters:

  • trace_mod (Module) —

    A module that implements tracing methods

  • mode (Symbol) (defaults to: :default) —

    Trace module will only be used for this trade mode

  • options (Hash) —

    Keywords that will be passed to the tracing class during #initialize

See Also:



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# File 'lib/graphql/schema.rb', line 1427

def trace_with(trace_mod, mode: :default, **options)
  if mode.is_a?(Array)
    mode.each { |m| trace_with(trace_mod, mode: m, **options) }
  else
    tc = own_trace_modes[mode] ||= build_trace_mode(mode)
    tc.include(trace_mod)
    own_trace_modules[mode] << trace_mod
    add_trace_options_for(mode, options)
    if mode == :default
      # This module is being added as a default tracer. If any other mode classes
      # have already been created, but get their default behavior from a superclass,
      # Then mix this into this schema's subclass.
      # (But don't mix it into mode classes that aren't default-based.)
      own_trace_modes.each do |other_mode_name, other_mode_class|
        if other_mode_class < DefaultTraceClass
          # Don't add it back to the inheritance tree if it's already there
          if !(other_mode_class < trace_mod)
            other_mode_class.include(trace_mod)
          end
          # Add any options so they'll be available
          add_trace_options_for(other_mode_name, options)
        end
      end
    end
  end
  nil
end

.tracer(new_tracer, silence_deprecation_warning: false) ⇒ Object 



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# File 'lib/graphql/schema.rb', line 1394

def tracer(new_tracer, silence_deprecation_warning: false)
  if !silence_deprecation_warning
    warn("`Schema.tracer(#{new_tracer.inspect})` is deprecated; use module-based `trace_with` instead. See: https://graphql-ruby.org/queries/tracing.html")
    warn "  #{caller(1, 1).first}"
  end
  default_trace = trace_class_for(:default, build: true)
  if default_trace.nil? || !(default_trace < GraphQL::Tracing::CallLegacyTracers)
    trace_with(GraphQL::Tracing::CallLegacyTracers)
  end

  own_tracers << new_tracer
end

.tracers ⇒ Object 



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# File 'lib/graphql/schema.rb', line 1407

def tracers
  find_inherited_value(:tracers, EMPTY_ARRAY) + own_tracers
end

.type_error(type_error, context) ⇒ void

This method returns an undefined value.

Called at runtime when GraphQL-Ruby encounters a mismatch between the application behavior and the GraphQL type system.

The default implementation of this method is to follow the GraphQL specification, but you can override this to report errors to your bug tracker or customize error handling.

Parameters:

  • type_error (GraphQL::Error) —

    several specific error classes are passed here, see the default implementation for details

  • context (GraphQL::Query::Context) —

    the context for the currently-running operation

Raises:



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# File 'lib/graphql/schema.rb', line 1310

def type_error(type_error, context)
  case type_error
  when GraphQL::InvalidNullError
    execution_error = GraphQL::ExecutionError.new(type_error.message, ast_node: type_error.ast_node)
    execution_error.path = context[:current_path]

    context.errors << execution_error
  when GraphQL::UnresolvedTypeError, GraphQL::StringEncodingError, GraphQL::IntegerEncodingError
    raise type_error
  when GraphQL::IntegerDecodingError
    nil
  end
end

.type_from_ast(ast_node, context: self.query_class.new(self, "{ __typename }").context) ⇒ Object 



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# File 'lib/graphql/schema.rb', line 696

def type_from_ast(ast_node, context: self.query_class.new(self, "{ __typename }").context)
  GraphQL::Schema::TypeExpression.build_type(context.query.types, ast_node)
end

.types(context = GraphQL::Query::NullContext.instance) ⇒ Hash<String => Class>

Build a map of { name => type } and return it

Returns:

  • (Hash<String => Class>) —

    A dictionary of type classes by their GraphQL name

See Also:



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# File 'lib/graphql/schema.rb', line 333

def types(context = GraphQL::Query::NullContext.instance)
  if use_visibility_profile?
    types = Visibility::Profile.from_context(context, self)
    return types.all_types_h
  end
  all_types = non_introspection_types.merge(introspection_system.types)
  visible_types = {}
  all_types.each do |k, v|
    visible_types[k] =if v.is_a?(Array)
      visible_t = nil
      v.each do |t|
        if t.visible?(context)
          if visible_t.nil?
            visible_t = t
          else
            raise DuplicateNamesError.new(
              duplicated_name: k, duplicated_definition_1: visible_t.inspect, duplicated_definition_2: t.inspect
            )
          end
        end
      end
      visible_t
    else
      v
    end
  end
  visible_types
end

.unauthorized_field(unauthorized_error) ⇒ Field

This hook is called when a field fails an authorized? check.

By default, this hook implements the same behavior as unauthorized_object.

Whatever value is returned from this method will be used instead of the unauthorized field . If an error is raised, then nil will be used.

If you want to add an error to the "errors" key, raise a ExecutionError in this hook.

Parameters:

Returns:

  • (Field) —

    The returned field will be put in the GraphQL response



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# File 'lib/graphql/schema.rb', line 1296

def unauthorized_field(unauthorized_error)
  unauthorized_object(unauthorized_error)
end

.unauthorized_object(unauthorized_error) ⇒ Object

This hook is called when an object fails an authorized? check. You might report to your bug tracker here, so you can correct the field resolvers not to return unauthorized objects.

By default, this hook just replaces the unauthorized object with nil.

Whatever value is returned from this method will be used instead of the unauthorized object (accessible as unauthorized_error.object). If an error is raised, then nil will be used.

If you want to add an error to the "errors" key, raise a ExecutionError in this hook.

Parameters:

Returns:

  • (Object) —

    The returned object will be put in the GraphQL response



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# File 'lib/graphql/schema.rb', line 1280

def unauthorized_object(unauthorized_error)
  nil
end

.union_memberships(type = nil) ⇒ Object 



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# File 'lib/graphql/schema.rb', line 652

def union_memberships(type = nil)
  if type
    own_um = own_union_memberships.fetch(type.graphql_name, EMPTY_ARRAY)
    inherited_um = find_inherited_value(:union_memberships, EMPTY_HASH).fetch(type.graphql_name, EMPTY_ARRAY)
    own_um + inherited_um
  else
    joined_um = own_union_memberships.dup
    find_inherited_value(:union_memberhips, EMPTY_HASH).each do |k, v|
      um = joined_um[k] ||= []
      um.concat(v)
    end
    joined_um
  end
end

.use(plugin, **kwargs) ⇒ Object

Add plugin to this schema

Parameters:

  • plugin (#use) —

    A Schema plugin

Returns:

  • void



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# File 'lib/graphql/schema.rb', line 317

def use(plugin, **kwargs)
  if !kwargs.empty?
    plugin.use(self, **kwargs)
  else
    plugin.use(self)
  end
  own_plugins << [plugin, kwargs]
end

.use_visibility_profile? ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns:

  • (Boolean) 


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# File 'lib/graphql/schema.rb', line 601

def use_visibility_profile?
  if defined?(@use_visibility_profile)
    @use_visibility_profile
  elsif superclass.respond_to?(:use_visibility_profile?)
    superclass.use_visibility_profile?
  else
    false
  end
end

.validate(string_or_document, rules: nil, context: nil) ⇒ Array<GraphQL::StaticValidation::Error >

Validate a query string according to this schema.

Parameters:

Returns:



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# File 'lib/graphql/schema.rb', line 837

def validate(string_or_document, rules: nil, context: nil)
  doc = if string_or_document.is_a?(String)
    GraphQL.parse(string_or_document)
  else
    string_or_document
  end
  query = query_class.new(self, document: doc, context: context)
  validator_opts = { schema: self }
  rules && (validator_opts[:rules] = rules)
  validator = GraphQL::StaticValidation::Validator.new(**validator_opts)
  res = validator.validate(query, timeout: validate_timeout, max_errors: validate_max_errors)
  res[:errors]
end

.visible?(member, ctx) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/graphql/schema.rb', line 1248

def visible?(member, ctx)
  member.visible?(ctx)
end