Struct SparseWeights 

pub struct SparseWeights<'view, A, T, Id, I, P>
where
    A: PropertyAxis,
    I: PropertyIndex,
    P: ArrowPrimitiveType,
{ /* private fields */ }

Selected sparse primitive weights bound to one axis of a topology view.

A is one of ElementAxis, RelationAxis, or IncidenceAxis; the per-axis new constructor selects the right topology bound.

Performance

Weight lookup is O(log k) for k explicitly stored values.

Implementations

impl<'view, A, T, Id, I, P> SparseWeights<'view, A, T, Id, I, P>

where A: PropertyAxis, T: AxisIndex<A>, I: PropertyIndex, P: ArrowPrimitiveType, P::Native: Copy,

pub fn new( topology: &'view T, layer: &'view PropertyLayer<Id, I>, ) -> Result<Self, PropertyError>

Selects a sparse primitive layer as total weights for topology along axis A (ElementAxis, RelationAxis, or IncidenceAxis).

Errors

Returns PropertyError when the sparse layer is not total or type-compatible.

Performance

Validation is O(1) plus default downcast.

Trait Implementations

impl<T, Id, I, P> ElementWeight for SparseWeights<'_, ElementAxis, T, Id, I, P>

where T: ElementIndex, I: PropertyIndex, P: ArrowPrimitiveType, P::Native: Copy,

type Weight = <P as ArrowPrimitiveType>::Native

Copyable weight representation attached to each visible element.

fn element_weight(&self, element: Self::ElementId) -> Self::Weight

Returns the weight attached to element.

impl<T, Id, I, P> IncidenceBase for SparseWeights<'_, IncidenceAxis, T, Id, I, P>

where T: IncidenceIndex, I: PropertyIndex, P: ArrowPrimitiveType,

type IncidenceId = <T as IncidenceBase>::IncidenceId

Identity of one element’s participation in one relation.

type Role = <T as IncidenceBase>::Role

Implementation-defined participation role.

impl<T, Id, I, P> IncidenceWeight for SparseWeights<'_, IncidenceAxis, T, Id, I, P>

where T: IncidenceIndex, I: PropertyIndex, P: ArrowPrimitiveType, P::Native: Copy,

type Weight = <P as ArrowPrimitiveType>::Native

Copyable weight representation attached to each visible incidence.

fn incidence_weight(&self, incidence: Self::IncidenceId) -> Self::Weight

Returns the weight attached to incidence.

impl<T, Id, I, P> RelationWeight for SparseWeights<'_, RelationAxis, T, Id, I, P>

where T: RelationIndex, I: PropertyIndex, P: ArrowPrimitiveType, P::Native: Copy,

type Weight = <P as ArrowPrimitiveType>::Native

Copyable weight representation attached to each visible relation.

fn relation_weight(&self, relation: Self::RelationId) -> Self::Weight

Returns the weight attached to relation.

impl<T, Id, I, P> TopologyBase for SparseWeights<'_, ElementAxis, T, Id, I, P>

where T: ElementIndex, I: PropertyIndex, P: ArrowPrimitiveType,

type ElementId = <T as TopologyBase>::ElementId

Identity of a topology element.

type RelationId = <T as TopologyBase>::RelationId

Identity of a topology relation.

impl<T, Id, I, P> TopologyBase for SparseWeights<'_, IncidenceAxis, T, Id, I, P>

where T: IncidenceIndex, I: PropertyIndex, P: ArrowPrimitiveType,

type ElementId = <T as TopologyBase>::ElementId

Identity of a topology element.

type RelationId = <T as TopologyBase>::RelationId

Identity of a topology relation.

impl<T, Id, I, P> TopologyBase for SparseWeights<'_, RelationAxis, T, Id, I, P>

where T: RelationIndex, I: PropertyIndex, P: ArrowPrimitiveType,

type ElementId = <T as TopologyBase>::ElementId

Identity of a topology element.

type RelationId = <T as TopologyBase>::RelationId

Identity of a topology relation.