Struct Argument

pub struct Argument<'a, S> { /* private fields */ }

Metadata for an argument to a field

Implementations

impl<'a, S> Argument<'a, S>

pub fn is_builtin(&self) -> bool

Returns true if the type is built-in to GraphQL.

impl<'a, S> Argument<'a, S>

pub fn new(name: &str, arg_type: Type<'a>) -> Self

Builds a new Argument of the given Type with the given name.

pub fn description(self, description: &str) -> Self

Sets the description of this Argument.

Overwrites any previously set description.

pub fn default_value(self, val: InputValue<S>) -> Self

Set the default value of this Argument.

Overwrites any previously set default value.

Trait Implementations

impl<'a, S: Clone> Clone for Argument<'a, S>

fn clone(&self) -> Argument<'a, S>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'a, S: Debug> Debug for Argument<'a, S>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'a, S> GraphQLObject<S> for Argument<'a, S>

where S: ScalarValue + ScalarValue + 'a,

fn mark()

An arbitrary function without meaning.

impl<'a, S> GraphQLType<S> for Argument<'a, S>

where S: ScalarValue + ScalarValue + 'a,

fn name(_: &Self::TypeInfo) -> Option<&'static str>

Returns name of this GraphQLType to expose.

fn meta<'r>( info: &Self::TypeInfo, registry: &mut Registry<'r, S>, ) -> MetaType<'r, S>

where S: 'r,

Returns MetaType representing this GraphQLType.

impl<'a, S> GraphQLValue<S> for Argument<'a, S>

where S: ScalarValue + ScalarValue + 'a,

type Context = SchemaType<'a, S>

Context type for this GraphQLValue.

type TypeInfo = ()

Type that may carry additional schema information for this GraphQLValue.

fn type_name<'__i>(&self, info: &'__i Self::TypeInfo) -> Option<&'__i str>

Returns name of the GraphQLType exposed by this GraphQLValue.

fn resolve_field( &self, info: &Self::TypeInfo, field: &str, args: &Arguments<'_, S>, executor: &Executor<'_, '_, Self::Context, S>, ) -> ExecutionResult<S>

Resolves the value of a single field on this GraphQLValue.

fn concrete_type_name(&self, _: &Self::Context, _: &Self::TypeInfo) -> String

Returns the concrete GraphQLType name for this GraphQLValue being an interface, an union or an object.

fn resolve_into_type( &self, info: &Self::TypeInfo, type_name: &str, selection_set: Option<&[Selection<'_, S>]>, executor: &Executor<'_, '_, Self::Context, S>, ) -> ExecutionResult<S>

Resolves this GraphQLValue (being an interface or an union) into a concrete downstream object type.

fn resolve( &self, info: &Self::TypeInfo, selection_set: Option<&[Selection<'_, S>]>, executor: &Executor<'_, '_, Self::Context, S>, ) -> ExecutionResult<S>

Resolves the provided selection_set against this GraphQLValue.

impl<'a, S> GraphQLValueAsync<S> for Argument<'a, S>

where S: ScalarValue + Send + Sync + ScalarValue + 'a, for<'__fa__a> Argument<'__fa__a, S>: Sync,

fn resolve_field_async<'b>( &'b self, info: &'b Self::TypeInfo, field: &'b str, args: &'b Arguments<'_, S>, executor: &'b Executor<'_, '_, Self::Context, S>, ) -> BoxFuture<'b, ExecutionResult<S>>

Resolves the value of a single field on this GraphQLValueAsync.

fn resolve_into_type_async<'a>( &'a self, info: &'a Self::TypeInfo, type_name: &str, selection_set: Option<&'a [Selection<'a, S>]>, executor: &'a Executor<'a, 'a, Self::Context, S>, ) -> BoxFuture<'a, ExecutionResult<S>>

Resolves this GraphQLValueAsync (being an interface or an union) into a concrete downstream object type.

fn resolve_async<'a>( &'a self, info: &'a Self::TypeInfo, selection_set: Option<&'a [Selection<'_, S>]>, executor: &'a Executor<'_, '_, Self::Context, S>, ) -> BoxFuture<'a, ExecutionResult<S>>

Resolves the provided selection_set against this GraphQLValueAsync.

impl<'a, S> IsOutputType<S> for Argument<'a, S>

where S: ScalarValue + ScalarValue + 'a,

fn mark()

An arbitrary function without meaning.