2020-03-05 00:39:56 +00:00
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use crate::context::Data;
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2020-03-26 03:34:28 +00:00
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use crate::extensions::{BoxExtension, Extension};
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2020-03-04 06:24:44 +00:00
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use crate::model::__DirectiveLocation;
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2020-03-17 09:26:59 +00:00
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use crate::query::QueryBuilder;
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2020-03-04 06:24:44 +00:00
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use crate::registry::{Directive, InputValue, Registry};
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2020-03-03 11:15:18 +00:00
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use crate::types::QueryRoot;
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2020-03-19 09:20:12 +00:00
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use crate::{ObjectType, SubscribeBuilder, SubscriptionType, Type};
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2020-03-05 00:39:56 +00:00
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use std::any::Any;
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2020-03-05 07:50:57 +00:00
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use std::collections::HashMap;
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2020-03-01 10:54:34 +00:00
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2020-03-09 10:05:52 +00:00
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/// GraphQL schema
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2020-03-17 09:26:59 +00:00
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pub struct Schema<Query, Mutation, Subscription> {
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pub(crate) query: QueryRoot<Query>,
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pub(crate) 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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pub(crate) complexity: Option<usize>,
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pub(crate) depth: Option<usize>,
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pub(crate) extensions: Vec<Box<dyn Fn() -> BoxExtension + Send + Sync>>,
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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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2020-03-05 13:34:31 +00:00
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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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validator: 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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validator: 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 {
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inner: query,
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disable_introspection: false,
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},
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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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complexity: None,
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depth: None,
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extensions: Default::default(),
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}
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}
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/// Disable introspection query
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pub fn disable_introspection(mut self) -> Self {
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self.query.disable_introspection = true;
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self
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}
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/// Set limit complexity, Default no limit.
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pub fn limit_complexity(mut self, complexity: usize) -> Self {
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self.complexity = Some(complexity);
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self
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}
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/// Set limit complexity, Default no limit.
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pub fn limit_depth(mut self, depth: usize) -> Self {
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self.depth = Some(depth);
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self
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}
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2020-03-26 03:34:28 +00:00
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/// Add an extension
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pub fn extension<F: Fn() -> E + Send + Sync + 'static, E: Extension>(
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mut self,
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extension_factory: F,
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) -> Self {
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self.extensions
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.push(Box::new(move || Box::new(extension_factory())));
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self
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}
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2020-03-09 10:05:52 +00:00
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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, Subscription> {
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QueryBuilder {
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extensions: self.extensions.iter().map(|factory| factory()).collect(),
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schema: self,
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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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2020-03-03 11:15:18 +00:00
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2020-03-20 03:56:08 +00:00
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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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extensions: Default::default(),
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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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2020-03-01 10:54:34 +00:00
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}
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}
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