Struct Relation 

pub struct Relation {
    pub rel: String,
    pub target_uri: String,
    pub display_name: Option<String>,
}

A graph relation a frame participates in, surfaced with a human label — raw ids are never the primary identifier (SPEC.md §G1).

Fields

rel: String

The edge label. See rel for the recommended vocabulary; unknown values are valid and MUST NOT be rejected by a host.

target_uri: String

display_name: Option<String>

Implementations

impl Relation

pub fn has_display_name(&self) -> bool

Whether this edge can be surfaced to a human by name.

The “never a raw id” rule has been documented since the protocol’s first draft and was checked by nothing; SPEC.md §G1 now makes it a conformance requirement for graph-capable providers, and this is the predicate behind it.

pub fn has_target_uri(&self) -> bool

Whether this edge points somewhere (SPEC.md §G2).

target_uri is a required field, so serde guarantees it is present — but "" deserializes happily, and an edge to nowhere is not an edge. The schema has carried minLength: 1 here from the start; §G2 claimed frame-validity verified it and no code did, which is the self-attestation §11.1 exists to rule out.

pub fn uses_recommended_vocabulary(&self) -> bool

Whether rel uses the recommended vocabulary. Advisory only — a false here is a hint for a provider author, never a conformance failure.

Trait Implementations

impl Clone for Relation

fn clone(&self) -> Relation

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Relation

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Relation

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for Relation

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for Relation

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Relation