Struct GraphWriteOptions 

pub struct GraphWriteOptions {
    pub node_id_width: NodeIdWidth,
    pub weight_type: WeightType,
    pub weight_range: Option<(f64, f64)>,
    pub num_nodes: Option<u64>,
    pub properties: BTreeMap<String, String>,
}

Options for crate::traits::backend::StorageBackend::save_graph_with.

Fields

node_id_width: NodeIdWidth

Storage width for node ids (default U32); ids above the limit surface StorageError::Overflow instead of being truncated.

weight_type: WeightType

Storage width for edge weights (default F64, mirroring node_id_width, #106): weights are f64 at the API boundary. The default matches the sparse-matrix value column (bit-exact f64 round trips); an explicit F32 declaration halves the storage bytes but rejects values that cannot be stored exactly instead of silently narrowing them.

weight_range: Option<(f64, f64)>

Opt-in weight-range compliance check (#106): when Some((low, high)), every weight must already lie in the closed interval — a bounds assertion that catches a forgotten producer transform, never a transform the storage layer performs (normalization belongs upstream; values are persisted faithfully). NaN lies in no interval and is rejected; an inverted interval is a rejected configuration.

num_nodes: Option<u64>

Explicit node count (e.g. to keep isolated vertices). Must be at least max(src, dst) + 1 over all edges; defaults to exactly that.

properties: BTreeMap<String, String>

User properties stored on the collection (registry level) and stamped into the dataset schema metadata (dataset level).

Implementations

impl GraphWriteOptions

pub fn with_width(node_id_width: NodeIdWidth) -> Self

Trait Implementations

impl Clone for GraphWriteOptions

fn clone(&self) -> GraphWriteOptions

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GraphWriteOptions

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

Formats the value using the given formatter.

impl Default for GraphWriteOptions

fn default() -> Self

Returns the “default value” for a type.