Struct LineageRecord 

pub struct LineageRecord {
    pub lineage_uuid: Uuid,
    pub provenance_uuid: Uuid,
    pub subject_uuid: Uuid,
    pub subject_kind: SubjectKind,
    pub role: LineageRole,
    pub ordinal: u32,
    pub contract_version: u32,
}

One immutable event-to-subject lineage row.

Fields

lineage_uuid: Uuid

Deterministic UUIDv8 derived from the canonical lineage row.

provenance_uuid: Uuid

Owning provenance event.

subject_uuid: Uuid

Referenced public graph/knowledge object.

subject_kind: SubjectKind

Closed subject kind.

role: LineageRole

Input/output role.

ordinal: u32

Deterministic position within the role.

contract_version: u32

Lineage record contract.

Implementations

impl LineageRecord

pub fn new( provenance_uuid: Uuid, subject_uuid: Uuid, subject_kind: SubjectKind, role: LineageRole, ordinal: u32, ) -> Result<Self, ProvenanceError>

Build and identify one canonical lineage row.

Errors

Rejects nil UUIDs or canonical encoding failures.

pub fn canonical_bytes(&self) -> Result<Vec<u8>, ProvenanceError>

Canonical bytes used for fingerprints and idempotency comparison.

Errors

Returns a canonical encoding failure if shared bounds are exceeded.

pub fn fingerprint(&self) -> Result<[u8; 32], ProvenanceError>

Full domain-separated lineage fingerprint.

Errors

Returns a canonical encoding failure if shared bounds are exceeded.

Trait Implementations

impl Clone for LineageRecord

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LineageRecord

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

Formats the value using the given formatter.

impl Eq for LineageRecord

impl PartialEq for LineageRecord

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for LineageRecord