Struct RelationRef

pub struct RelationRef {
    pub source: EntityRef,
    pub kind: String,
    pub target: EntityRef,
    pub provenance: String,
    pub source_id: Option<String>,
}

Stable identity of one directed relationship.

Catalog vector positions never appear here. Endpoints use the same stable references as personal annotations; provenance and the source relationship identifier keep two independent assertions about the same pair distinct.

Fields

source: EntityRef

Where the directed relationship starts.

kind: String

Relationship type, such as performance_of or credit:producer.

target: EntityRef

Where it ends.

provenance: String

Who asserted or derived it: tags, musicbrainz, manual…

source_id: Option<String>

Stable relationship-row identifier supplied by the source, when any.

Implementations

impl RelationRef

pub fn id(&self) -> String

Compact stable selector used by the CLI.

FNV-1a is only a stable display hash, never security or identity. The CLI still refuses an ambiguous prefix.

Trait Implementations

impl Clone for RelationRef

fn clone(&self) -> RelationRef

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RelationRef

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

Formats the value using the given formatter.

impl Ord for RelationRef

fn cmp(&self, other: &RelationRef) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for RelationRef

fn eq(&self, other: &RelationRef) -> 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 PartialOrd for RelationRef

fn partial_cmp(&self, other: &RelationRef) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Eq for RelationRef

impl StructuralPartialEq for RelationRef