Struct VectorIndexTable 

pub struct VectorIndexTable {
    pub index_id: u64,
    pub name: String,
    pub table_name: String,
    pub column_name: String,
    pub dimensions: u32,
    pub hnsw: HnswIndex,
    /* private fields */
}

A persisted vector index that wraps HnswIndex with BufferManager-backed storage.

Persistence

• save() serializes the in-memory HNSW index to disk pages
• load() reads disk pages back into memory
• flush() writes dirty pages back to the BufferManager

Fields

index_id: u64

name: String

table_name: String

column_name: String

dimensions: u32

hnsw: HnswIndex

Implementations

impl VectorIndexTable

pub fn new( index_id: u64, name: String, table_name: String, column_name: String, metric: DistanceMetric, dimensions: u32, ) -> Self

Create a new vector index table with the given parameters.

pub fn hnsw(&self) -> &HnswIndex

Get a reference to the underlying HNSW index.

pub fn hnsw_mut(&mut self) -> &mut HnswIndex

Get a mutable reference to the underlying HNSW index.

pub fn metric(&self) -> DistanceMetric

Get the distance metric.

pub fn save(&mut self, bm: &mut BufferManager) -> Result<(), StorageError>

Save the in-memory HNSW index to BufferManager-backed pages.

Writes the header page (page 0) and all data pages. Every vector is stored whole on a single page; a vector that does not fit in one page is an error rather than a silent drop (P52.17).

pub fn load(&mut self, bm: &mut BufferManager) -> Result<(), StorageError>

Load the HNSW index from BufferManager-backed pages.

Reads the header page and exactly num_vectors entries from the data pages, rebuilding the in-memory index. Zeroed page tails (which the page padding leaves behind) are ignored instead of being reconstructed as phantom empty vectors (P52.17). After loading, the index is fully searchable.

pub fn flush(&mut self, bm: &mut BufferManager) -> Result<(), StorageError>

Flush dirty pages to disk via the BufferManager.

pub fn register_file(&self, bm: &mut BufferManager, db_path: &Path)

Register the vector index file with the BufferManager.

pub fn is_dirty(&self) -> bool

Check whether the in-memory state differs from disk.

Trait Implementations

impl Clone for VectorIndexTable

fn clone(&self) -> VectorIndexTable

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for VectorIndexTable

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

Formats the value using the given formatter.