Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Add Appendix C - Built-in Definitions #1037

Open
wants to merge 4 commits into
base: main
Choose a base branch
from
Open
Show file tree
Hide file tree
Changes from all commits
Commits
File filter

Filter by extension

Filter by extension

Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
360 changes: 360 additions & 0 deletions spec/Appendix C -- Built-in Definitions.md
Original file line number Diff line number Diff line change
@@ -0,0 +1,360 @@
# C. Appendix: Built-in Definitions

## Scalars

```graphql
"""
The `Int` scalar type represents non-fractional signed whole numeric values. Int can represent values between
-(2^31) and 2^31 - 1.
"""
scalar Int

"""
The `Float` scalar type represents signed double-precision fractional values as specified by
[IEEE 754](http://en.wikipedia.org/wiki/IEEE_floating_point).
"""
scalar Float

"""
The `String` scalar type represents textual data, represented as UTF-8 character sequences. The String type is
most often used by GraphQL to represent free-form human-readable text.
"""
scalar String

"""
The `Boolean` scalar type represents `true` or `false`.
"""
scalar Boolean

"""
The `ID` scalar type represents a unique identifier, often used to refetch an object or as key for a cache.
The ID type appears in a JSON response as a String; however, it is not intended to be human-readable. When
expected as an input type, any string (such as `"4"`) or integer (such as `4`) input value will be accepted as
an ID.
"""
scalar ID
```

## Directives

```graphql
"""
Directs the executor to include this field or fragment only when the `if` argument is true
"""
directive @include(
"""
Included when true.
"""
if: Boolean!
) on FIELD | FRAGMENT_SPREAD | INLINE_FRAGMENT

"""
Directs the executor to skip this field or fragment when the `if` argument is true.
"""
directive @skip(
"""
Skipped when true.
"""
if: Boolean!
) on FIELD | FRAGMENT_SPREAD | INLINE_FRAGMENT

"""
Marks the field, argument, input field or enum value as deprecated
"""
directive @deprecated(
"""
The reason for the deprecation
"""
reason: String = "No longer supported"
) on FIELD_DEFINITION | ARGUMENT_DEFINITION | ENUM_VALUE | INPUT_FIELD_DEFINITION

"""
Exposes a URL that specifies the behavior of this scalar.
"""
directive @specifiedBy(
"""
The URL that specifies the behavior of this scalar.
"""
url: String!
) on SCALAR
```

## Introspection types

```graphql
"""
A GraphQL Schema defines the capabilities of a GraphQL server. It exposes all available types and directives
on the server, as well as the entry points for query, mutation, and subscription operations.
"""
type __Schema {
description: String

"""
A list of all types supported by this server.
"""
types: [__Type!]!

"""
The type that query operations will be rooted at.
"""
queryType: __Type!

"""
If this server supports mutation, the type that mutation operations will be rooted at.
"""
mutationType: __Type

"""
If this server support subscription, the type that subscription operations will be rooted at.
"""
subscriptionType: __Type

"""
A list of all directives supported by this server.
"""
directives: [__Directive!]!
}

"""
The fundamental unit of any GraphQL Schema is the type. There are many kinds of types in GraphQL as
represented by the `__TypeKind` enum.

Depending on the kind of a type, certain fields describe information about that type.
"""
type __Type {
kind: __TypeKind!
name: String
description: String
"""
must be non-null for OBJECT and INTERFACE, otherwise null.
"""
fields(includeDeprecated: Boolean = false): [__Field!]
"""
must be non-null for OBJECT and INTERFACE, otherwise null.
"""
interfaces: [__Type!]
"""
must be non-null for INTERFACE and UNION, otherwise null.
"""
possibleTypes: [__Type!]
"""
must be non-null for ENUM, otherwise null.
"""
enumValues(includeDeprecated: Boolean = false): [__EnumValue!]
"""
must be non-null for INPUT_OBJECT, otherwise null.
"""
inputFields(includeDeprecated: Boolean = false): [__InputValue!]
"""
must be non-null for NON_NULL and LIST, otherwise null.
"""
ofType: __Type
"""
may be non-null for custom SCALAR, otherwise null.
"""
specifiedByURL: String
}

"""
An enum describing what kind of type a given `__Type` is.
"""
enum __TypeKind {
"""
Indicates this type is a scalar.
"""
SCALAR

"""
Indicates this type is an object. `fields` and `interfaces` are valid fields.
"""
OBJECT

"""
Indicates this type is an interface. `fields`, `interfaces`, and `possibleTypes` are valid fields.
"""
INTERFACE

"""
Indicates this type is a union. `possibleTypes` is a valid field.
"""
UNION

"""
Indicates this type is an enum. `enumValues` is a valid field.
"""
ENUM

"""
Indicates this type is an input object. `inputFields` is a valid field.
"""
INPUT_OBJECT

"""
Indicates this type is a list. `ofType` is a valid field.
"""
LIST

"""
Indicates this type is a non-null. `ofType` is a valid field.
"""
NON_NULL
}

"""
Object and Interface types are described by a list of Fields, each of which has a name, potentially a list of
arguments, and a return type.
"""
type __Field {
name: String!
description: String
args(includeDeprecated: Boolean = false): [__InputValue!]!
type: __Type!
isDeprecated: Boolean!
deprecationReason: String
}

"""
Arguments provided to Fields or Directives and the input fields of an InputObject are represented as Input
Values which describe their type and optionally a default value.
"""
type __InputValue {
name: String!
description: String
type: __Type!

"""
A GraphQL-formatted string representing the default value for this input value.
"""
defaultValue: String
isDeprecated: Boolean!
deprecationReason: String
}

"""
One possible value for a given Enum. Enum values are unique values, not a placeholder for a string or numeric
value. However an Enum value is returned in a JSON response as a string.
"""
type __EnumValue {
name: String!
description: String
isDeprecated: Boolean!
deprecationReason: String
}

"""
A Directive provides a way to describe alternate runtime execution and type validation behavior in a GraphQL
document.

In some cases, you need to provide options to alter GraphQL's execution behavior in ways field arguments will
not suffice, such as conditionally including or skipping a field. Directives provide this by describing
additional information to the executor.
"""
type __Directive {
name: String!
description: String
isRepeatable: Boolean!
locations: [__DirectiveLocation!]!
args(includeDeprecated: Boolean = false): [__InputValue!]!
}

"""
A Directive can be adjacent to many parts of the GraphQL language, a __DirectiveLocation describes one such
possible adjacencies.
"""
enum __DirectiveLocation {
"""
Location adjacent to a query operation.
"""
QUERY

"""
Location adjacent to a mutation operation.
"""
MUTATION

"""
Location adjacent to a subscription operation.
"""
SUBSCRIPTION

"""
Location adjacent to a field.
"""
FIELD

"""
Location adjacent to a fragment definition.
"""
FRAGMENT_DEFINITION

"""
Location adjacent to a fragment spread.
"""
FRAGMENT_SPREAD

"""
Location adjacent to an inline fragment.
"""
INLINE_FRAGMENT

"""
Location adjacent to a variable definition.
"""
VARIABLE_DEFINITION

"""
Location adjacent to a schema definition.
"""
SCHEMA

"""
Location adjacent to a scalar definition.
"""
SCALAR

"""
Location adjacent to an object type definition.
"""
OBJECT

"""
Location adjacent to a field definition.
"""
FIELD_DEFINITION

"""
Location adjacent to an argument definition.
"""
ARGUMENT_DEFINITION

"""
Location adjacent to an interface definition.
"""
INTERFACE

"""
Location adjacent to a union definition.
"""
UNION

"""
Location adjacent to an enum definition.
"""
ENUM

"""
Location adjacent to an enum value definition.
"""
ENUM_VALUE

"""
Location adjacent to an input object type definition.
"""
INPUT_OBJECT

"""
Location adjacent to an input object field definition.
"""
INPUT_FIELD_DEFINITION
}
```
2 changes: 2 additions & 0 deletions spec/GraphQL.md
Original file line number Diff line number Diff line change
Expand Up @@ -139,3 +139,5 @@ Note: This is an example of a non-normative note.
# [Appendix: Notation Conventions](Appendix%20A%20--%20Notation%20Conventions.md)

# [Appendix: Grammar Summary](Appendix%20B%20--%20Grammar%20Summary.md)

# [Appendix: Builtin Definitions](Appendix%20C%20--%20Built-in%20Definitions.md)