Struct FilterQuadSource

pub struct FilterQuadSource<S, P> { /* private fields */ }

The result type of QuadSource::filter_quads.

Trait Implementations

impl<S, P> QuadSource for FilterQuadSource<S, P>

where S: QuadSource, P: FnMut(&S::Quad<'_>) -> bool,

type Quad<'x> = <S as QuadSource>::Quad<'x>

The type of quads this source yields.

type Error = <S as QuadSource>::Error

The type of errors produced by this source.

fn try_for_some_quad<E, F>( &mut self, f: F, ) -> StreamResult<bool, Self::Error, E>

where E: Error, F: FnMut(Self::Quad<'_>) -> Result<(), E>,

Call f for some quad(s) (possibly zero) from this source, if any.

fn size_hint_quads(&self) -> (usize, Option<usize>)

Returns the bounds on the remaining length of the source.

fn try_for_each_quad<F, E>(&mut self, f: F) -> StreamResult<(), Self::Error, E>

where F: FnMut(Self::Quad<'_>) -> Result<(), E>, E: Error,

Call f for all quads from this source.

fn for_some_quad<F>(&mut self, f: &mut F) -> Result<bool, Self::Error>

where F: FnMut(Self::Quad<'_>),

Call f for some quad(s) (possibly zero) from this source, if any.

fn for_each_quad<F>(&mut self, f: F) -> Result<(), Self::Error>

where F: FnMut(Self::Quad<'_>),

Call f for all quads from this source.

fn filter_quads<F>(self, predicate: F) -> FilterQuadSource<Self, F>

where Self: Sized, F: FnMut(&Self::Quad<'_>) -> bool,

Returns a source which uses predicate to determine if an quad should be yielded.

fn filter_map_quads<F, T>(self, filter_map: F) -> FilterMapQuadSource<Self, F>

where Self: Sized, F: FnMut(Self::Quad<'_>) -> Option<T>,

Returns a source that both filters and maps.

fn map_quads<F, T>(self, map: F) -> MapQuadSource<Self, F>

where Self: Sized, F: FnMut(Self::Quad<'_>) -> T,

Returns a source which yield the result of map for each quad.

fn to_triples(self) -> ToTriples<Self>

where Self: Sized,

Convert of quads in this source to triples (stripping the graph name).

fn collect_quads<D>(self) -> StreamResult<D, Self::Error, <D as Dataset>::Error>

where Self: Sized, for<'x> Self::Quad<'x>: Quad, D: CollectibleDataset,

Collect these quads into a new dataset.

fn add_to_dataset<D: MutableDataset>( self, dataset: &mut D, ) -> StreamResult<usize, Self::Error, <D as MutableDataset>::MutationError>

where Self: Sized, for<'x> Self::Quad<'x>: Quad,

Insert all quads from this source into the given MutableDataset.