Struct EdgeProps 

pub struct EdgeProps { /* private fields */ }

Edge-property overlay.

After a V8 snapshot open the base properties live in the mmap’d section 5 (ArchivedEdgeProps). Only post-snapshot changes land here. Deletions of base-only edges are recorded in tombstones so the view layer can mask them without materialising the full base into RAM.

Implementations

impl EdgeProps

pub fn new() -> Self

pub fn set(&mut self, etype: u32, src: u32, dst: u32, field: &str, value: Value)

pub fn get(&self, etype: u32, src: u32, dst: u32, field: &str) -> Option<&Value>

pub fn remove_edge(&mut self, etype: u32, src: u32, dst: u32)

Remove an edge’s props from the overlay and record a tombstone so that archive lookups for this key are also masked.

pub fn is_tombstoned(&self, etype: u32, src: u32, dst: u32) -> bool

True if (etype, src, dst) is tombstoned (deleted from overlay or base).

pub fn is_clean(&self) -> bool

True when this overlay has no entries and no tombstones (i.e. nothing has changed since the last snapshot). Used to short-circuit the edge-props section passthrough during snapshot merging.

pub fn sorted_entries(&self) -> Vec<(u32, u32, u32, &BTreeMap<String, Value>)>

Return all overlay entries as a sorted Vec of (etype, src, dst, &props). Sorted by (etype, src, dst) ascending — BTreeMap iteration is already sorted.

pub fn tombstoned_keys(&self) -> impl Iterator<Item = (u32, u32, u32)> + '_

Iterate tombstoned keys, used when merging with a base section.

Trait Implementations

impl Clone for EdgeProps

fn clone(&self) -> EdgeProps

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for EdgeProps

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

Formats the value using the given formatter.

impl Default for EdgeProps

fn default() -> EdgeProps

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for EdgeProps

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for EdgeProps

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

where __S: Serializer,

Serialize this value into the given Serde serializer.