Struct MultiForkByErrorProvider 

pub struct MultiForkByErrorProvider<P, F> {
    providers: Vec<P>,
    predicate: F,
}

A provider that returns data from the first child provider passing a predicate function.

This is an abstract forking provider that must be provided with a type implementing the ForkByErrorPredicate trait.

MultiForkByErrorProvider does not support forking between DataProviders. However, it supports forking between BufferProvider, and DynamicDataProvider.

Fields

providers: Vec<P>

predicate: F

Implementations

impl<P, F> MultiForkByErrorProvider<P, F>

pub fn new_with_predicate(providers: Vec<P>, predicate: F) -> Self

Create a new provider that forks between the vector of children.

The predicate argument should be an instance of a struct implementing ForkByErrorPredicate.

pub fn inner(&self) -> &[P]

Returns a slice of the inner providers.

pub fn with_inner_mut(&mut self, f: impl FnOnce(&mut Vec<P>))

Exposes a mutable vector of providers to a closure so it can be mutated.

pub fn into_inner(self) -> Vec<P>

Returns ownership of the inner providers to the caller.

pub fn push(&mut self, provider: P)

Adds an additional child provider.

impl<P> MultiForkByErrorProvider<P, MarkerNotFoundPredicate>

pub fn new(providers: Vec<P>) -> Self

Create a provider that returns data from the first child provider supporting the marker.

See MultiForkByMarkerProvider.

Trait Implementations

impl<M, P, F> DataProvider<M> for MultiForkByErrorProvider<P, F>

where M: DataMarker, P: DataProvider<M>, F: ForkByErrorPredicate,

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

Query the provider for data, returning the result.

impl<P: Debug, F: Debug> Debug for MultiForkByErrorProvider<P, F>

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

Formats the value using the given formatter.

impl<M, P, F> DryDataProvider<M> for MultiForkByErrorProvider<P, F>

where M: DataMarker, P: DryDataProvider<M>, F: ForkByErrorPredicate,

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

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

impl<M, P, F> DynamicDataProvider<M> for MultiForkByErrorProvider<P, F>

where M: DynamicDataMarker, P: DynamicDataProvider<M>, F: ForkByErrorPredicate,

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

Query the provider for data, returning the result.

impl<M, P, F> DynamicDryDataProvider<M> for MultiForkByErrorProvider<P, F>

where M: DynamicDataMarker, P: DynamicDryDataProvider<M>, F: ForkByErrorPredicate,

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

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

impl<M, P, F> IterableDynamicDataProvider<M> for MultiForkByErrorProvider<P, F>

where M: DynamicDataMarker, P: IterableDynamicDataProvider<M>, F: ForkByErrorPredicate,

fn iter_ids_for_marker( &self, marker: DataMarkerInfo, ) -> Result<BTreeSet<DataIdentifierCow<'_>>, DataError>

Given a DataMarkerInfo, returns a set of DataIdentifierCow.