Struct HnswIndexEntry 

pub struct HnswIndexEntry {
    pub name: String,
    pub column_name: String,
    pub metric: DistanceMetric,
    pub index: HnswIndex,
    pub needs_rebuild: bool,
}

One HNSW index attached to a table. The distance metric is fixed at CREATE INDEX time via USING hnsw (col) WITH (metric = '<m>') (l2 / cosine / dot); omitting the WITH clause defaults to L2, matching the pre-SQLR-28 behaviour for round-tripping older sqlrite_master rows that didn’t carry a metric.

Fields

name: String

User-supplied name from CREATE INDEX <name> …. Unique across both secondary_indexes and hnsw_indexes on a given table.

column_name: String

The VECTOR column this index covers.

metric: DistanceMetric

Distance metric the graph was built for. The optimizer’s HNSW shortcut only fires when the query’s vec_distance_* function matches this metric — picking a non-matching distance falls through to brute-force, since the graph topology is metric- specific (an L2-pruned graph isn’t a valid cosine search graph in general, and vice versa).

index: HnswIndex

The graph itself.

needs_rebuild: bool

Phase 7d.3 — true iff a DELETE or UPDATE-on-vector-col has invalidated the graph since the last rebuild. INSERT maintains the graph incrementally and leaves this false. The next save rebuilds dirty indexes from current rows before serializing.

Trait Implementations

impl Clone for HnswIndexEntry

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 HnswIndexEntry

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

Formats the value using the given formatter.