Struct VectorIndex 

pub struct VectorIndex { /* private fields */ }

Thread-safe HNSW index over memory embeddings.

Implementations

impl VectorIndex

pub fn build(entries: Vec<(String, Vec<f32>)>) -> Self

Build a new index from a list of (memory_id, embedding) pairs.

pub fn empty() -> Self

Build an empty index.

pub fn insert(&self, id: String, embedding: Vec<f32>)

Add a new entry to the index (goes to overflow until next rebuild).

pub fn remove(&self, id: &str)

Remove an entry by ID (marks for exclusion; cleaned up on rebuild).

pub fn search(&self, query: &[f32], k: usize) -> Vec<VectorHit>

Search for the k nearest neighbors to the query embedding.

Combines HNSW approximate search with linear scan of overflow entries. Returns results sorted by ascending distance (closest first).

pub fn len(&self) -> usize

Return the total number of indexed entries (HNSW + overflow).

pub fn rebuild(&self)

Force a full rebuild of the HNSW index from all entries.