Struct HnswMemoryIndex 

pub struct HnswMemoryIndex { /* private fields */ }

HNSW index manager for memory entries.

Maintains a mapping from u64 keys to String IDs, and the HNSW index itself. Thread-safe via RwLock.

Implementations

impl HnswMemoryIndex

pub fn new( dimensions: usize, capacity: usize, persist_path: Option<PathBuf>, ) -> Result<HnswMemoryIndex, Error>

Create a new HNSW memory index.

Arguments

• dimensions — Embedding vector dimensions.
• capacity — Initial capacity hint.
• persist_path — Optional directory for index file persistence.

pub fn restore_or_new( dimensions: usize, capacity: usize, persist_path: Option<PathBuf>, ) -> Result<HnswMemoryIndex, Error>

Try to restore from disk, fall back to new index.

pub fn add_entry(&self, id: &str, vector: &[f32]) -> Result<(), Error>

Add an entry to the HNSW index.

pub fn remove_entry(&self, id: &str) -> Result<(), Error>

Remove an entry from the index.

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

Search for k nearest neighbors.

Returns (String ID, distance) pairs.

pub fn len(&self) -> usize

Number of entries in the index.

pub fn is_empty(&self) -> bool

Whether the index is empty.

pub fn persist(&self) -> Result<(), Error>

Save the index and key mappings to disk.

Trait Implementations

impl Debug for HnswMemoryIndex

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.