Struct StatisticalDataStorage 

pub struct StatisticalDataStorage { /* private fields */ }

Statistical data storage using ZNS for efficient data management

Implementations

impl StatisticalDataStorage

pub fn new() -> Self

pub fn initialize(&mut self) -> Result<(), StatisticalError>

pub fn store_dataset( &mut self, dataset: Dataset, ) -> Result<(), StatisticalError>

pub fn get_dataset(&self, dataset_id: &str) -> Result<Dataset, StatisticalError>

pub fn get_dataset_metadata(&self, dataset_id: &str) -> Option<DatasetMetadata>

pub fn list_datasets(&self) -> Vec<String>

pub fn store_dataset_data( &mut self, dataset: &Dataset, ) -> Result<(), StatisticalError>

Persist a dataset through the storage layer.

The dataset is serialised (so the byte representation that would be written to a ZNS zone is materialised) and cached in the in-memory dataset_cache. When a real ZnsZoneManager device handle is available the serialised bytes would be written to the selected zone; the cache acts as the always-available fallback persistence layer.

pub fn retrieve_dataset_data(&self, dataset_id: &str) -> Option<&Dataset>

Retrieve a cached dataset by id without consuming the cache entry.

pub fn store_dataset_to_zone( &mut self, dataset_id: &str, zone_id: &str, ) -> Result<(), StatisticalError>

Explicitly store a cached dataset’s metadata into a named zone.

The dataset must already have been persisted via store_dataset_data (so it is present in the in-memory cache). Its metadata is then registered with the requested zone, mirroring what a ZNS write into that zone would record.

pub fn attach_zns_manager(&mut self, manager: Arc<Mutex<ZnsZoneManager>>)

Attach a real ZNS zone manager so dataset persistence can delegate to the hardware-backed zone device. When unset, the in-memory cache is used.

pub fn sample_dataset(&self) -> Result<Dataset, StatisticalError>

Returns a small built-in sample dataset (3 rows × 5 columns) useful for demos, tests, and as a fallback when no real dataset is registered. This is backed by get_dataset_data_legacy.