Enum Cardinality 

pub enum Cardinality {
    One,
    Many,
}

Cardinality of an ontology predicate.

• One: at most one active head edge per (source, canonical_relation, edge_type) at recall. The conflict resolver runs when multiple head edges coexist for this predicate.
• Many: multi-valued predicate; all head edges pass through recall unchanged.

Notes

Cardinality is keyed per canonical only (not per (canonical, EdgeType)) because the TOML format declares it per predicate without an edge_type field (critic nit #2). Per-edge-type overrides are a future extension.

Variants

One

Single-valued: conflict resolver picks one head edge when multiples coexist.

Many

Multi-valued: all head edges pass through recall unchanged.

Trait Implementations

impl Clone for Cardinality

fn clone(&self) -> Cardinality

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Cardinality

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

Formats the value using the given formatter.

impl Default for Cardinality

fn default() -> Cardinality

Returns the “default value” for a type.

impl PartialEq for Cardinality

fn eq(&self, other: &Cardinality) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for Cardinality

impl Eq for Cardinality

impl StructuralPartialEq for Cardinality