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MultiLayerNodeManager

sqlitegraph::hnsw::multilayer

Struct MultiLayerNodeManager 

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pub struct MultiLayerNodeManager { /* private fields */ }
Expand description

Multi-layer node manager that orchestrates layer operations

Provides high-level interface for multi-layer HNSW functionality, coordinating between vector storage, layer management, and search operations. Wraps existing single-layer components to provide multi-layer capabilities.

§Key Responsibilities

  • Coordinate insertions across multiple layers
  • Manage bidirectional ID mappings
  • Orchestrate multi-layer search operations
  • Provide feature flag for safe migration

Implementations§

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impl MultiLayerNodeManager

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pub fn new(config: HnswConfig) -> Result<Self, HnswError>

Create new multi-layer node manager

§Arguments
  • config - HNSW configuration
§Returns

New MultiLayerNodeManager instance

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pub fn insert_vector( &mut self, vector_id: u64, ) -> Result<(usize, Vec<(usize, u64)>), HnswError>

Insert vector into appropriate layers

§Arguments
  • vector_id - Global vector ID from storage
§Returns

Tuple of (highest_level, layer_assignments) where layer_assignments is a vector of (layer_id, local_id) pairs

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pub fn remove_vector(&mut self, vector_id: u64) -> Result<(), HnswError>

Remove vector from all layers

§Arguments
  • vector_id - Global vector ID to remove
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pub fn get_local_id(&self, vector_id: u64, layer_id: usize) -> Option<u64>

Get local ID for global ID in specific layer

§Arguments
  • vector_id - Global vector ID
  • layer_id - Layer ID
§Returns

Local node ID if mapping exists

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pub fn get_global_id(&self, layer_id: usize, local_id: u64) -> Option<u64>

Get global ID for local ID in specific layer

§Arguments
  • layer_id - Layer ID
  • local_id - Local node ID
§Returns

Global vector ID if mapping exists

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pub fn get_layer_vectors(&self, layer_id: usize) -> Vec<u64>

Get vectors assigned to specific layer

§Arguments
  • layer_id - Layer ID
§Returns

Iterator over global IDs in the layer

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pub fn get_vector_level(&self, vector_id: u64) -> Option<usize>

Get highest level assignment for a vector

§Arguments
  • vector_id - Global vector ID
§Returns

Highest layer where vector exists, or None if not inserted

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pub fn get_statistics(&self) -> (usize, Vec<usize>, usize)

Get statistics about layer distribution

§Returns

Tuple of (total_vectors, layer_counts, memory_usage)

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pub fn validate_consistency(&self) -> Result<(), HnswError>

Validate all mappings and consistency

§Returns

Ok(()) if all mappings are consistent

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pub fn clear(&mut self) -> Result<(), HnswError>

Clear all mappings and start fresh

Trait Implementations§

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impl Debug for MultiLayerNodeManager

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

Formats the value using the given formatter. Read more

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fn vzip(self) -> V