Struct warpgrapher::engine::EngineBuilder

pub struct EngineBuilder<RequestCtx = ()> where
    RequestCtx: RequestContext,  { /* fields omitted */ }

Implements the builder pattern for Warpgrapher engines

Examples

let config = Configuration::default();
let engine = Engine::<()>::new(config, NoDatabasePool {}).build()?;

Implementations

impl<RequestCtx> EngineBuilder<RequestCtx> where
    RequestCtx: RequestContext, 

pub fn with_resolvers(
    self,
    resolvers: Resolvers<RequestCtx>
) -> EngineBuilder<RequestCtx>

Adds resolvers to the engine

Examples

let resolvers = Resolvers::<()>::new();

let config = Configuration::default();

let mut engine = Engine::<()>::new(config, NoDatabasePool {})
    .with_resolvers(resolvers)
    .build()?;

pub fn with_validators(
    self,
    validators: Validators
) -> EngineBuilder<RequestCtx>

Adds validators to the engine

Examples

let validators = Validators::new();

let config = Configuration::default();

let mut engine = Engine::<()>::new(config, NoDatabasePool {})
    .with_validators(validators)
    .build()?;

pub fn with_event_handlers(
    self,
    event_handlers: EventHandlerBag<RequestCtx>
) -> EngineBuilder<RequestCtx>

Adds event handlers to the engine

Examples

let event_handlers = EventHandlerBag::<()>::new();

let config = Configuration::default();

let mut engine = Engine::<()>::new(config, NoDatabasePool {})
    .with_event_handlers(event_handlers)
    .build()?;

pub fn with_version(self, version: String) -> EngineBuilder<RequestCtx>

Sets the version of the app

Examples

let config = Configuration::default();

let mut engine = Engine::<()>::new(config, NoDatabasePool {})
    .with_version("1.0.0".to_string())
    .build()?;

pub fn build(self) -> Result<Engine<RequestCtx>, Error>

Builds a configured Engine including generating the data model, CRUD operations, and custom endpoints from the Configuration c. Returns the Engine.

Errors

Returns an Error variant ConfigItemDuplicated if there is more than one type or more than one endpoint that use the same name.

Returns an Error variant ConfigItemReserved if a named configuration item, such as an endpoint or type, has a name that is a reserved word, such as “ID” or the name of a GraphQL scalar type.

Returns an Error variant SchemaItemNotFound if there is an error in the configuration, specifically if the configuration of type A references type B, but type B cannot be found.

Returns an Error variant ResolverNotFound if there is a resolver defined in the configuration for which no ResolverFunc has been added to the Resolvers collection applied to the EngineBuilder with with_resolvers.

Returns an Error variant ValidatorNotFound if there is a validator defined in the configuration for which no ValidatorFunc has been added to the Validators collection applied to the EngineBuilder with with_validators.

Returns an

Examples

let config = Configuration::new(1, Vec::new(), Vec::new());

let mut engine = Engine::<()>::new(config, NoDatabasePool {}).build()?;

Trait Implementations

impl<RequestCtx: Clone> Clone for EngineBuilder<RequestCtx> where
    RequestCtx: RequestContext, 

fn clone(&self) -> EngineBuilder<RequestCtx>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for EngineBuilder

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

Formats the value using the given formatter.