Struct ProvRelation 

#[repr(C)]
pub struct ProvRelation {
    pub kind: ProvRelationKind,
    pub target_id: u64,
}

A single PROV-O relation edge (kind + target node ID).

Compact 16-byte representation (after alignment padding) packed into the inline relation array of ProvenanceHeader.

Fields

kind: ProvRelationKind

Relation label (None marks an empty slot).

target_id: u64

Target PROV node ID. Meaningless when kind == None.

Implementations

impl ProvRelation

pub const EMPTY: ProvRelation

An empty relation slot.

pub const fn new(kind: ProvRelationKind, target_id: u64) -> ProvRelation

Build a new relation.

pub const fn is_some(&self) -> bool

Whether this slot is populated.

Trait Implementations

impl Archive for ProvRelation

where ProvRelationKind: Archive, u64: Archive,

type Archived = ArchivedProvRelation

The archived representation of this type.

type Resolver = ProvRelationResolver

The resolver for this type. It must contain all the additional information from serializing needed to make the archived type from the normal type.

unsafe fn resolve( &self, pos: usize, resolver: <ProvRelation as Archive>::Resolver, out: *mut <ProvRelation as Archive>::Archived, )

Creates the archived version of this value at the given position and writes it to the given output.

impl Clone for ProvRelation

fn clone(&self) -> ProvRelation

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ProvRelation

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

Formats the value using the given formatter.

impl Default for ProvRelation

fn default() -> ProvRelation

Returns the “default value” for a type.

impl<__D> Deserialize<ProvRelation, __D> for <ProvRelation as Archive>::Archived

where __D: Fallible + ?Sized, ProvRelationKind: Archive, <ProvRelationKind as Archive>::Archived: Deserialize<ProvRelationKind, __D>, u64: Archive, <u64 as Archive>::Archived: Deserialize<u64, __D>,

fn deserialize( &self, deserializer: &mut __D, ) -> Result<ProvRelation, <__D as Fallible>::Error>

Deserializes using the given deserializer

impl PartialEq for ProvRelation

fn eq(&self, other: &ProvRelation) -> 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<__S> Serialize<__S> for ProvRelation

where __S: Fallible + ?Sized, ProvRelationKind: Serialize<__S>, u64: Serialize<__S>,

fn serialize( &self, serializer: &mut __S, ) -> Result<<ProvRelation as Archive>::Resolver, <__S as Fallible>::Error>

Writes the dependencies for the object and returns a resolver that can create the archived type.

impl Copy for ProvRelation

impl Eq for ProvRelation

impl StructuralPartialEq for ProvRelation