73 lines
1.7 KiB
Rust
73 lines
1.7 KiB
Rust
use crate::parser::types::Field;
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use crate::resolver_utils::ObjectType;
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use crate::type_mark::TypeMarkObject;
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use crate::{
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registry, Context, ContextSelectionSet, Error, OutputValueType, Positioned, QueryError, Result,
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Type,
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};
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use std::borrow::Cow;
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/// Empty mutation
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///
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/// Only the parameters used to construct the Schema, representing an unconfigured mutation.
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///
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/// # Examples
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///
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/// ```rust
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/// use async_graphql::*;
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///
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/// struct QueryRoot;
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///
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/// #[Object]
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/// impl QueryRoot {}
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///
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/// let schema = Schema::new(QueryRoot, EmptyMutation, EmptySubscription);
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/// ```
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#[derive(Default, Copy, Clone)]
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pub struct EmptyMutation;
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impl Type for EmptyMutation {
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fn type_name() -> Cow<'static, str> {
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Cow::Borrowed("EmptyMutation")
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}
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fn create_type_info(registry: &mut registry::Registry) -> String {
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registry.create_type::<Self, _>(|_| registry::MetaType::Object {
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name: "EmptyMutation".to_string(),
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description: None,
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fields: Default::default(),
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cache_control: Default::default(),
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extends: false,
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keys: None,
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})
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}
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}
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#[async_trait::async_trait]
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impl ObjectType for EmptyMutation {
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fn is_empty() -> bool {
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true
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}
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async fn resolve_field(&self, _ctx: &Context<'_>) -> Result<serde_json::Value> {
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unreachable!()
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}
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}
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#[async_trait::async_trait]
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impl OutputValueType for EmptyMutation {
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async fn resolve(
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&self,
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_ctx: &ContextSelectionSet<'_>,
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field: &Positioned<Field>,
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) -> Result<serde_json::Value> {
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Err(Error::Query {
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pos: field.pos,
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path: None,
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err: QueryError::NotConfiguredMutations,
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})
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}
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}
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impl TypeMarkObject for EmptyMutation {}
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