Struct DiskProvider 

pub struct DiskProvider<Data>
where
    Data: GraphDataType<VectorIdType = u32>,
{ /* private fields */ }

The DiskProvider is a data provider that loads data from disk using the disk readers The data format for disk is different from that of the in-memory providers. The disk format stores both the vectors and the adjacency list next to each other for better locality for quicker access. Please refer to the RFC documentation at [docs\rfcs\cy2025\disk_provider_for_async_index.md] for design details.

Trait Implementations

impl<Data> DataProvider for DiskProvider<Data>

where Data: GraphDataType<VectorIdType = u32>,

fn to_internal_id( &self, _context: &DefaultContext, gid: &Self::ExternalId, ) -> Result<Self::InternalId, Self::Error>

Translate an external id to its corresponding internal id.

fn to_external_id( &self, _context: &DefaultContext, id: Self::InternalId, ) -> Result<Self::ExternalId, Self::Error>

Translate an internal id its corresponding external id.

type Context = DefaultContext

type InternalId = u32

type ExternalId = u32

type Guard = NoopGuard<u32>

The operation guard returned by SetElement::set_element to notify self if an operation fails.

type Error = ANNError

impl<'this, Data, ProviderFactory> DefaultPostProcessor<'this, DiskProvider<Data>, &'this [<Data as GraphDataType>::VectorDataType], (<DiskProvider<Data> as DataProvider>::InternalId, <Data as GraphDataType>::AssociatedDataType)> for DiskSearchStrategy<'this, Data, ProviderFactory>

where Data: GraphDataType<VectorIdType = u32>, ProviderFactory: VertexProviderFactory<Data>,

type Processor = RerankAndFilter<'this>

The default post-processor type.

fn default_post_processor(&'this self) -> Self::Processor

Create the default post-processor.

impl<Data> LoadWith<AsyncDiskLoadContext> for DiskProvider<Data>

where Data: GraphDataType<VectorIdType = u32>,

type Error = ANNError

The error type if deserialization is unsuccessful.

async fn load_with<P>( provider: &P, ctx: &AsyncDiskLoadContext, ) -> ANNResult<Self>

where P: StorageReadProvider,

Load self form disk using provider for IO-related needs. Argument auxiliary can be arbitrary metadata required for a successful operation, such as file paths.

impl<'this, Data, ProviderFactory> SearchStrategy<'this, DiskProvider<Data>, &'this [<Data as GraphDataType>::VectorDataType]> for DiskSearchStrategy<'this, Data, ProviderFactory>

where Data: GraphDataType<VectorIdType = u32>, ProviderFactory: VertexProviderFactory<Data>,

type SearchAccessor = DiskAccessor<'this, Data, <ProviderFactory as VertexProviderFactory<Data>>::VertexProviderType>

The concrete type of the accessor that is used to access Self during the greedy graph search. The query will be provided to the accessor exactly once during search to construct the query computer.

type SearchAccessorError = ANNError

An error that can occur when getting a search_accessor.

fn search_accessor( &'this self, provider: &'this DiskProvider<Data>, _context: &DefaultContext, query: &'this [Data::VectorDataType], ) -> Result<Self::SearchAccessor, Self::SearchAccessorError>

Construct and return the search accessor.