Enum juniper::TypeKind
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pub enum TypeKind { Scalar, Object, Interface, Union, Enum, InputObject, List, NonNull, }
GraphQL type kind
The GraphQL specification defines a number of type kinds - the meta type of a type.
Variants
Scalar
Scalar types
Scalar types appear as the leaf nodes of GraphQL queries. Strings, numbers, and booleans are the built in types, and while it's possible to define your own, it's relatively uncommon.
Object
Object types
The most common type to be implemented by users. Objects have fields and can implement interfaces.
Interface
Interface types
Interface types are used to represent overlapping fields between multiple types, and can be queried for their concrete type.
Union
Union types
Unions are similar to interfaces but can not contain any fields on their own.
Enum
Enum types
Like scalars, enum types appear as the leaf nodes of GraphQL queries.
InputObject
Input objects
Represents complex values provided in queries into the system.
List
List types
Represent lists of other types. This library provides implementations for vectors and slices, but other Rust types can be extended to serve as GraphQL lists.
NonNull
Non-null types
In GraphQL, nullable types are the default. By putting a !
after a
type, it becomes non-nullable.
Trait Implementations
impl Clone for TypeKind
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fn clone(&self) -> TypeKind
Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)
1.0.0
Performs copy-assignment from source
. Read more
impl Eq for TypeKind
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impl PartialEq for TypeKind
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fn eq(&self, __arg_0: &TypeKind) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Rhs) -> bool
1.0.0
This method tests for !=
.
impl Debug for TypeKind
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impl GraphQLType for TypeKind
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type Context = ()
The expected context type for this GraphQL type Read more
fn name() -> Option<&'static str>
The name of the GraphQL type to expose. Read more
fn meta<'r>(registry: &mut Registry<'r>) -> MetaType<'r>
The meta type representing this GraphQL type.
fn resolve(&self, _: Option<&[Selection]>, _: &Executor<Self::Context>) -> Value
Resolve the provided selection set against the current object. Read more
fn resolve_field(&self,
field_name: &str,
arguments: &Arguments,
executor: &Executor<Self::Context>)
-> ExecutionResult
field_name: &str,
arguments: &Arguments,
executor: &Executor<Self::Context>)
-> ExecutionResult
Resolve the value of a single field on this type. Read more
fn resolve_into_type(&self,
type_name: &str,
selection_set: Option<&[Selection]>,
executor: &Executor<Self::Context>)
-> ExecutionResult
type_name: &str,
selection_set: Option<&[Selection]>,
executor: &Executor<Self::Context>)
-> ExecutionResult
Resolve this interface or union into a concrete type Read more
fn concrete_type_name(&self, context: &Self::Context) -> String
Return the concrete type name for this instance/union. Read more
impl FromInputValue for TypeKind
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fn from(v: &InputValue) -> Option<TypeKind>
Performs the conversion.
impl ToInputValue for TypeKind
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fn to(&self) -> InputValue
Performs the conversion.