Trait DynamicDryDataProvider

trait DynamicDryDataProvider<M: DynamicDataMarker>: DynamicDataProvider<M>

A dynanmic 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_data(self: &Self, marker: DataMarkerInfo, req: DataRequest<'_>) -> Result<DataResponseMetadata, DataError>

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

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

Implementors