Struct DualTopologySnapshot 

pub struct DualTopologySnapshot;

Forward CSR plus inbound CSC snapshot bytes with Postgres metadata.

Implementations

impl DualTopologySnapshot

pub fn from_edge_rows( edges: &[EdgeRow], built_at_unix: u64, ) -> Result<Vec<u8>, PostgresGraphError>

Builds OXGTOPO bytes from scanned edge rows.

Node indices are assigned in ascending NodeKey order. Catalog registration is validated separately via crate::Catalog::validate_for_build or crate::SnapshotRebuild::from_catalog_and_edges.

Errors

Returns PostgresGraphError::Build when edge rows are empty or graph construction fails.

Performance

This function is O(n log n + m) where n is distinct nodes and m is edges.

pub fn from_dense_u32_edges( edges: &[(u32, u32)], built_at_unix: u64, ) -> Result<Vec<u8>, PostgresGraphError>

Builds OXGTOPO bytes from dense 0..node_count-1 node ids (tests and benches).

Errors

Returns PostgresGraphError::Build when edges is empty or construction fails.

Performance

This function is O(n + m) for n nodes and m edges.

pub fn from_dense_u32_edges_with_node_count( node_count: u32, edges: &[(u32, u32)], built_at_unix: u64, ) -> Result<Vec<u8>, PostgresGraphError>

Builds OXGTOPO bytes with an explicit node count (tests with isolated vertices).

Errors

Returns PostgresGraphError::Build when node_count is zero, an edge endpoint is out of range, or construction fails.

Performance

This function is O(n + m) for n nodes and m edges.

Trait Implementations

impl Clone for DualTopologySnapshot

fn clone(&self) -> DualTopologySnapshot

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for DualTopologySnapshot

impl Debug for DualTopologySnapshot

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

Formats the value using the given formatter.

impl Default for DualTopologySnapshot

fn default() -> DualTopologySnapshot

Returns the “default value” for a type.

impl Eq for DualTopologySnapshot

impl PartialEq for DualTopologySnapshot

fn eq(&self, other: &DualTopologySnapshot) -> 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 StructuralPartialEq for DualTopologySnapshot