Struct MemoryVectorIndex 

pub struct MemoryVectorIndex { /* private fields */ }

Implementations

impl MemoryVectorIndex

pub fn new(dimensions: u32) -> Self

pub fn vectors(&self) -> &BTreeMap<DocId, Vec<Vec<f32>>>

Trait Implementations

impl Clone for MemoryVectorIndex

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for MemoryVectorIndex

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

Formats the value using the given formatter.

impl VectorIndex for MemoryVectorIndex

fn search_knn( &self, query: &[f32], k: usize, ) -> StorageBackendResult<PostingList>

Brute-force top-k by cosine similarity, descending.

fn search_threshold( &self, query: &[f32], threshold: f32, ) -> StorageBackendResult<PostingList>

Brute-force threshold scan: keep all docs with cosine >= threshold.

fn contains_document(&self, doc_id: DocId) -> StorageBackendResult<bool>

Test canonical membership at this handle’s visibility boundary without searching or materializing the corpus. Empty tensor replacements have no membership. This is a maintenance probe, not a logical query observation.

fn dimensions(&self) -> u32

fn index_kind(&self) -> &'static str

fn add(&mut self, doc_id: DocId, vector: Vec<f32>) -> StorageBackendResult<()>

fn add_many( &mut self, doc_id: DocId, vectors: Vec<Vec<f32>>, ) -> StorageBackendResult<()>

fn delete(&mut self, doc_id: DocId) -> StorageBackendResult<()>

fn clear(&mut self) -> StorageBackendResult<()>

fn count(&self) -> StorageBackendResult<usize>

fn snapshot(&self) -> StorageBackendResult<Arc<dyn VectorIndex>>

Read-only handle suitable for an ExecutionContext.

fn snapshot_with_control( &self, control: &StorageReadControl, ) -> StorageBackendResult<Arc<dyn VectorIndex>>

Capture using the caller’s retention allowance and cancellation. Owners that copy index data override this method to reserve construction before allocation. The default preserves the provider’s existing snapshot and its independently retained control.

fn writable_snapshot(&self) -> StorageBackendResult<Box<dyn VectorIndex>>

Independent writable copy used by in-memory engine rollback. The default keeps third-party and persistent implementations source compatible; only indexes hosted by a memory engine need to support it.

fn diskann_query_metadata( &self, control: &StorageReadControl, ) -> StorageBackendResult<Option<DiskANNQueryMetadata>>

Metadata from the actual selected physical/canonical view, without executing a logical vector query. Unsupported methods return None.

fn search_knn_with_control( &self, query: &[f32], k: usize, control: &StorageReadControl, ) -> StorageBackendResult<PostingList>

Request a controlled search. The default checks cancellation and delegates to the provider’s existing read boundary; in-memory physical algorithms override it to charge query workspace to the supplied allowance.

fn search_threshold_with_control( &self, query: &[f32], threshold: f32, control: &StorageReadControl, ) -> StorageBackendResult<PostingList>

Controlled threshold search keeps the same result and caller-owned posting boundary as ordinary search.

fn search_knn_with_statistics( &self, query: &[f32], k: usize, control: Option<&StorageReadControl>, ) -> StorageBackendResult<VectorQueryResult>

Run one KNN invocation and retain its measured work when supported. An optional invoking control preserves the existing controlled-search boundary; absence preserves ordinary provider dispatch. Unsupported providers execute once and return no report.

fn search_threshold_with_statistics( &self, query: &[f32], threshold: f32, control: Option<&StorageReadControl>, ) -> StorageBackendResult<VectorQueryResult>

Return exact threshold results and optional work from their one invocation. Report support must not introduce an additional scan or weaken the original provider’s controls.

fn initialize(&mut self) -> StorageBackendResult<()>

Build any auxiliary physical metadata required by this index from its current vector contents. Brute-force indexes need no extra work; persistent IVF and HNSW implementations use this during explicit index creation, while restore paths deliberately skip it.

fn diskann_read_snapshot( &self, control: &StorageReadControl, ) -> StorageBackendResult<Option<DiskANNReadSnapshot>>

Borrow an opaque retained DiskANN canonical source for evaluated document replacements. Capturing metadata does not execute or observe a vector query; other physical methods leave this capability absent.

fn vector_read_snapshot( &self, control: &StorageReadControl, ) -> StorageBackendResult<Option<VectorReadSnapshot>>

Retain the actual canonical values independently of physical mutation provenance. Capturing this source is metadata access, not a logical vector query.

fn matches_document_vectors( &self, document: DocId, vectors: &[Vec<f32>], control: &StorageReadControl, ) -> StorageBackendResult<bool>

Check whether a SQL replacement can retain this document’s canonical vectors. Unsupported providers return false and keep the normal replacement path. Live memory indexes override this to borrow their canonical data without cloning the entire index.

fn snapshot_with_vector_read( &self, _source: VectorReadSnapshot, control: &StorageReadControl, ) -> StorageBackendResult<Option<Arc<dyn VectorIndex>>>

Keep this selected physical DiskANN generation while reading a different fixed canonical field view. The query owner verifies raw coverage without inventing mutation origins.

fn snapshot_with_diskann_changes( &self, _changes: &DiskANNReadChanges, control: &StorageReadControl, ) -> StorageBackendResult<Option<Arc<dyn VectorIndex>>>

Retain this physical DiskANN generation with the selected actual canonical replacements. Wrappers preserve their original read observation and retention boundary on the returned index. Unsupported methods return None without changing physical selection.