Struct InMemoryFetcher 

pub struct InMemoryFetcher { /* private fields */ }

In-memory NodeFetcher backed by a contiguous Vec<Vec<f32>>.

Used on all targets (including WASM) and in unit tests. In production an mmap-backed variant may wrap this type with the same interface.

Implementations

impl InMemoryFetcher

pub fn new(dim: usize, vectors: Vec<Vec<f32>>) -> Self

Create from an owned vector slice. All entries must have length dim.

pub fn from_slice(dim: usize, vectors: &[Vec<f32>]) -> Self

Create from a borrowed slice, cloning each vector.

pub fn len(&self) -> usize

Number of nodes stored.

pub fn is_empty(&self) -> bool

Returns true if no vectors are stored.

Trait Implementations

impl NodeFetcher for InMemoryFetcher

fn prefetch_batch(&mut self, _indices: &[u32])

No-op: all data is already in RAM.

fn dim(&self) -> usize

Vector dimensionality.

fn fetch_fp32(&mut self, idx: u32) -> Option<Vec<f32>>

Retrieve the full-precision FP32 vector for node idx.