Struct FlatIndex 

pub struct FlatIndex {
    pub dimensions: usize,
    pub distance: DistanceMetric,
    /* private fields */
}

Brute-force flat index backed by a RwLock<Vec<(id, vector)>>.

Fields

dimensions: usize

Expected vector dimensionality.

distance: DistanceMetric

Distance metric for similarity comparisons.

Implementations

impl FlatIndex

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

Create a new, empty flat index.

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

Insert a single vector, validating its dimensionality.

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

Insert multiple vectors.

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

Score all stored vectors in parallel and return the top_k closest.

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

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

pub fn len(&self) -> usize

Return the number of stored vectors.

pub fn is_empty(&self) -> bool

Return true if no vectors are stored.

pub fn all_vectors(&self) -> VectorResult<Vec<(usize, Vec<f32>)>>

Return all stored (id, vector) pairs (used for persistence and migration).

pub fn to_hnsw(&self, config: &VectorConfig) -> VectorResult<HnswIndex>

Migrate all vectors into a fresh HnswIndex.