Trait DataProvider

pub trait DataProvider<M>
where
    M: KeyedDataMarker,
{
    // Required method
    fn load(&self, req: DataRequest<'_>) -> Result<DataResponse<M>, DataError>;
}

A data provider that loads data for a specific DataKey.

Required Methods

fn load(&self, req: DataRequest<'_>) -> Result<DataResponse<M>, DataError>

Query the provider for data, returning the result.

Returns Ok if the request successfully loaded data. If data failed to load, returns an Error with more information.

Implementations on Foreign Types

impl<'a, M, P> DataProvider<M> for &'a P

where M: KeyedDataMarker, P: DataProvider<M> + ?Sized,

fn load(&self, req: DataRequest<'_>) -> Result<DataResponse<M>, DataError>

impl<M, P> DataProvider<M> for Box<P>

where M: KeyedDataMarker, P: DataProvider<M> + ?Sized,

fn load(&self, req: DataRequest<'_>) -> Result<DataResponse<M>, DataError>

impl<M, P> DataProvider<M> for Rc<P>

where M: KeyedDataMarker, P: DataProvider<M> + ?Sized,

fn load(&self, req: DataRequest<'_>) -> Result<DataResponse<M>, DataError>

impl<M, P> DataProvider<M> for Arc<P>

where M: KeyedDataMarker, P: DataProvider<M> + ?Sized,

fn load(&self, req: DataRequest<'_>) -> Result<DataResponse<M>, DataError>

Implementors

impl DataProvider<HelloWorldV1Marker> for HelloWorldProvider

impl<M, P> DataProvider<M> for DowncastingAnyProvider<'_, P>

where P: AnyProvider + ?Sized, M: KeyedDataMarker, for<'a> YokeTraitHack<<M::Yokeable as Yokeable<'a>>::Output>: Clone, M::Yokeable: ZeroFrom<'static, M::Yokeable> + MaybeSendSync,