icu_provider_baked

Trait DryDataProvider

pub trait DryDataProvider<M>: DataProvider<M>
where
    M: DataMarker,
{
    // Required method
    fn dry_load(
        &self,
        req: DataRequest<'_>,
    ) -> Result<DataResponseMetadata, DataError>;
}
Expand description

A data provider that can determine whether it can load a particular data identifier, potentially cheaper than actually performing the load.

Required Methods§

fn dry_load( &self, req: DataRequest<'_>, ) -> Result<DataResponseMetadata, DataError>

This method goes through the motions of load, but only returns the metadata.

If dry_load returns an error, load must return the same error, but not vice-versa. Concretely, load could return deserialization or I/O errors that dry_load cannot predict.

Implementations on Foreign Types§

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impl<M, P> DryDataProvider<M> for &P
where M: DataMarker, P: DryDataProvider<M> + ?Sized,

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fn dry_load( &self, req: DataRequest<'_>, ) -> Result<DataResponseMetadata, DataError>

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impl<M, P> DryDataProvider<M> for Box<P>
where M: DataMarker, P: DryDataProvider<M> + ?Sized,

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fn dry_load( &self, req: DataRequest<'_>, ) -> Result<DataResponseMetadata, DataError>

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impl<M, P> DryDataProvider<M> for Rc<P>
where M: DataMarker, P: DryDataProvider<M> + ?Sized,

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fn dry_load( &self, req: DataRequest<'_>, ) -> Result<DataResponseMetadata, DataError>

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impl<M, P> DryDataProvider<M> for Arc<P>
where M: DataMarker, P: DryDataProvider<M> + ?Sized,

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fn dry_load( &self, req: DataRequest<'_>, ) -> Result<DataResponseMetadata, DataError>

Implementors§

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impl DryDataProvider<HelloWorldV1> for HelloWorldProvider

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impl<P, M> DryDataProvider<M> for DeserializingBufferProvider<'_, P>
where M: DataMarker, P: DynamicDryDataProvider<BufferMarker> + ?Sized, <<M as DynamicDataMarker>::DataStruct as Yokeable<'de>>::Output: for<'de> Deserialize<'de>,

impl<D, F, M> DryDataProvider<M> for FilterDataProvider<D, F>
where F: Fn(DataIdentifierBorrowed<'_>) -> bool, M: DataMarker, D: DryDataProvider<M>,

impl<M, P, F> DryDataProvider<M> for MultiForkByErrorProvider<P, F>
where M: DataMarker, P: DryDataProvider<M>, F: ForkByErrorPredicate,

impl<M, P0, P1, F> DryDataProvider<M> for ForkByErrorProvider<P0, P1, F>
where M: DataMarker, P0: DryDataProvider<M>, P1: DryDataProvider<M>, F: ForkByErrorPredicate,

impl<M: DataMarker, P0: DryDataProvider<M>, P1: DryDataProvider<M>> DryDataProvider<M> for EitherProvider<P0, P1>

impl<P, M> DryDataProvider<M> for LocaleFallbackProvider<P>
where P: DryDataProvider<M>, M: DataMarker,