Struct HnswIndex 

pub struct HnswIndex { /* private fields */ }

Wrapper around usearch::Index providing a typed interface.

Implementations

impl HnswIndex

pub fn new( dim: usize, vtype: VectorType, metric: DistanceMetric, params: Option<HnswParams>, ) -> Result<Self, IndexError>

Create a new empty HNSW index.

pub fn len(&self) -> usize

Number of vectors in the index.

pub fn is_empty(&self) -> bool

pub fn add(&self, key: u64, blob: &[u8]) -> Result<(), IndexError>

Add a vector to the index. The blob must match the index’s type and dimension.

pub fn search( &self, query_blob: &[u8], k: usize, ) -> Result<Vec<(u64, f32)>, IndexError>

Search for k nearest neighbors. Returns vec of (key, distance) pairs sorted by distance ascending.

pub fn remove(&self, key: u64) -> Result<(), IndexError>

Remove a vector by key (soft delete).

pub fn save_to_buffer(&self) -> Result<Vec<u8>, IndexError>

Serialize the index to a byte buffer.

pub fn load_from_buffer(&self, buf: &[u8]) -> Result<(), IndexError>

Load index state from a byte buffer. Replaces current index contents.