Enum IndexSelector 

pub enum IndexSelector {
    Flat(FlatIndex),
    Hnsw(Box<HnswIndex>),
}

Transparently routes between a FlatIndex and a HnswIndex.

Variants

Flat(FlatIndex)

Brute-force index for small collections.

Hnsw(Box<HnswIndex>)

Approximate NN index for larger collections.

Implementations

impl IndexSelector

pub fn new( dimensions: usize, distance: DistanceMetric, _config: &VectorConfig, ) -> Self

Create a new selector (always starts as Flat).

pub fn insert( &mut self, id: usize, vector: Vec<f32>, config: &VectorConfig, ) -> VectorResult<()>

Insert a single vector, migrating to HNSW if the threshold is crossed.

pub fn insert_batch( &mut self, items: Vec<(usize, Vec<f32>)>, config: &VectorConfig, ) -> VectorResult<()>

Insert a batch of vectors, migrating to HNSW if the threshold is crossed.

pub fn search( &self, query: &[f32], top_k: usize, ef_search: usize, ) -> VectorResult<Vec<(usize, f32)>>

Search for top_k nearest neighbours of query.

pub fn delete(&mut self, id: usize) -> VectorResult<bool>

Delete a vector by id. Returns true if the id was present.

pub fn len(&self) -> usize

Return the number of live elements.

pub fn is_empty(&self) -> bool

Return true if the selector contains no live elements.

pub fn is_hnsw(&self) -> bool

Return true if the selector is backed by HNSW.

pub fn migrate_to_hnsw(&mut self, config: &VectorConfig) -> VectorResult<()>

Migrate from FlatIndex to HnswIndex, replacing self.

pub fn save( &self, dir: &Path, workspace_id: &str, collection: &str, ) -> VectorResult<()>

Persist the index under <dir>/<collection>/.

pub fn load( dir: &Path, workspace_id: &str, collection: &str, config: &VectorConfig, distance: DistanceMetric, dimensions: usize, ) -> VectorResult<Self>

Reload a previously saved index from <dir>/<collection>/.