138 lines
4.6 KiB
Rust
138 lines
4.6 KiB
Rust
use crate::context::Data;
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use crate::model::__DirectiveLocation;
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use crate::query::QueryBuilder;
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use crate::registry::{Directive, InputValue, Registry};
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use crate::types::QueryRoot;
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use crate::{ObjectType, SubscribeBuilder, SubscriptionType, Type};
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use std::any::Any;
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use std::collections::HashMap;
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/// GraphQL schema
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pub struct Schema<Query, Mutation, Subscription> {
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query: QueryRoot<Query>,
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mutation: Mutation,
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pub(crate) subscription: Subscription,
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pub(crate) registry: Registry,
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pub(crate) data: Data,
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}
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impl<Query: ObjectType, Mutation: ObjectType, Subscription: SubscriptionType>
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Schema<Query, Mutation, Subscription>
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{
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/// Create a schema
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///
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/// The root object for the query and Mutation needs to be specified.
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/// If there is no mutation, you can use `EmptyMutation`.
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/// If there is no subscription, you can use `EmptySubscription`.
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pub fn new(query: Query, mutation: Mutation, subscription: Subscription) -> Self {
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let mut registry = Registry {
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types: Default::default(),
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directives: Default::default(),
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implements: Default::default(),
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query_type: Query::type_name().to_string(),
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mutation_type: if Mutation::is_empty() {
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None
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} else {
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Some(Mutation::type_name().to_string())
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},
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subscription_type: if Subscription::is_empty() {
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None
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} else {
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Some(Subscription::type_name().to_string())
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},
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};
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registry.add_directive(Directive {
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name: "include",
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description: Some("Directs the executor to include this field or fragment only when the `if` argument is true."),
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locations: vec![
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__DirectiveLocation::FIELD,
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__DirectiveLocation::FRAGMENT_SPREAD,
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__DirectiveLocation::INLINE_FRAGMENT
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],
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args: {
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let mut args = HashMap::new();
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args.insert("if", InputValue {
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name: "if",
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description: Some("Included when true."),
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ty: "Boolean!".to_string(),
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default_value: None
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});
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args
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}
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});
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registry.add_directive(Directive {
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name: "skip",
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description: Some("Directs the executor to skip this field or fragment when the `if` argument is true."),
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locations: vec![
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__DirectiveLocation::FIELD,
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__DirectiveLocation::FRAGMENT_SPREAD,
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__DirectiveLocation::INLINE_FRAGMENT
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],
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args: {
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let mut args = HashMap::new();
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args.insert("if", InputValue {
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name: "if",
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description: Some("Skipped when true."),
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ty: "Boolean!".to_string(),
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default_value: None
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});
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args
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}
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});
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// register scalars
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bool::create_type_info(&mut registry);
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i32::create_type_info(&mut registry);
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f32::create_type_info(&mut registry);
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String::create_type_info(&mut registry);
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QueryRoot::<Query>::create_type_info(&mut registry);
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if !Mutation::is_empty() {
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Mutation::create_type_info(&mut registry);
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}
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if !Subscription::is_empty() {
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Subscription::create_type_info(&mut registry);
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}
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Self {
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query: QueryRoot { inner: query },
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mutation,
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subscription,
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registry,
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data: Default::default(),
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}
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}
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/// Add a global data that can be accessed in the `Context`.
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pub fn data<D: Any + Send + Sync>(mut self, data: D) -> Self {
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self.data.insert(data);
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self
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}
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/// Start a query and return `QueryBuilder`.
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pub fn query<'a>(&'a self, source: &'a str) -> QueryBuilder<'a, Query, Mutation> {
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QueryBuilder {
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query: &self.query,
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mutation: &self.mutation,
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registry: &self.registry,
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source,
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operation_name: None,
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variables: None,
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data: &self.data,
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}
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}
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/// Start a subscribe and return `SubscribeBuilder`.
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pub fn subscribe<'a>(&'a self, source: &'a str) -> SubscribeBuilder<'a, Subscription> {
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SubscribeBuilder {
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subscription: &self.subscription,
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registry: &self.registry,
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source,
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operation_name: None,
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variables: None,
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}
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}
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}
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