Enum EdgeRelation 

pub enum EdgeRelation {
    Contains,
    PartOf,
    InstanceOf,
    LinksTo,
    LocatedIn,
    Extends,
    VariantOf,
    IntroducedBy,
    Supersedes,
    DerivedFrom,
    Precedes,
    DependsOn,
    Enables,
    Implements,
    CompetesWith,
    ComposedWith,
    Annotates,
    Supports,
    Refutes,
    Owns,
}

Closed set of 20 canonical edge relations.

No Default — every edge requires an explicit relation. Wire format: snake_case strings (e.g. "part_of", "introduced_by").

Variants

Contains

PartOf

InstanceOf

LinksTo

LocatedIn

Extends

VariantOf

IntroducedBy

Supersedes

DerivedFrom

Precedes

DependsOn

Enables

Implements

CompetesWith

ComposedWith

Annotates

Supports

Refutes

Owns

Implementations

impl EdgeRelation

pub const ALL: [Self; 20]

All 20 canonical relations in ontology-table order.

pub const VALID_NAMES: &'static [&'static str]

Valid snake_case names for all 20 canonical relations.

pub const fn is_symmetric(&self) -> bool

true for symmetric relations: edge direction has no semantic meaning.

pub fn canonical_endpoints<T: Ord>(&self, source: T, target: T) -> (T, T)

Order the endpoints of an edge so a symmetric relation has one stored form.

For symmetric relations (competes_with, composed_with) the smaller endpoint comes first, so A→B and B→A collapse into a single canonical row. Every other relation, and a symmetric pair that is already ordered or has equal endpoints, is returned as given.

Generic over T: Ord because this crate does not depend on a UUID type; for UUIDs the order is the byte order of the id.

pub const fn category(&self) -> EdgeCategory

The category this relation belongs to.

pub const fn as_str(&self) -> &'static str

Canonical snake_case name as stored in the database.

Trait Implementations

impl Clone for EdgeRelation

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for EdgeRelation

impl Debug for EdgeRelation

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

Formats the value using the given formatter.

impl Display for EdgeRelation

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

Formats the value using the given formatter.

impl Eq for EdgeRelation

impl FromStr for EdgeRelation

fn from_str(s: &str) -> Result<Self, Self::Err>

Parse a string into an EdgeRelation.

Accepts the 20 canonical relation names (case-insensitive, with hyphens normalised to underscores) and also squashed forms that omit the separator (e.g. "partof", "derivedfrom"). The squashed forms exist for ergonomic DSL entry; they are not stored on the wire, which always uses the canonical snake_case form produced by EdgeRelation::as_str.

type Err = UnknownVariant

The associated error which can be returned from parsing.

impl Hash for EdgeRelation

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for EdgeRelation

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for EdgeRelation