Struct LseExport 

pub struct LseExport { /* private fields */ }

A downloaded export artifact, with the provenance needed to decode it safely.

Why this is not a bare PathBuf

An export job targets exactly one dataset, and LseDataset::exchange_id is total, so one file has exactly one ExchangeId. Carrying the dataset makes that derivable rather than re-accepted as an unchecked argument at decode time — which is what turns “rows from a futures export tagged onto an equities-registered instrument” from a silent misattribution into a construction-time error.

A caller holding a file obtained out of band constructs one explicitly with new, which puts the obligation in the type rather than in prose.

Implementations

impl LseExport

pub fn new( path: impl Into<PathBuf>, dataset: LseDataset, symbol: impl Into<String>, timeframe: LseExportTimeframe, range: LseExportRange, ) -> Self

Describe an export artifact already on disk.

Prefer LseVaultClient::download_export, which fills this in from the job it downloaded. Use this for a file obtained out of band — and note that the dataset you name here is what every decoded event’s ExchangeId will be derived from, while symbol is what the decoder checks every row against.

timeframe is taken on the caller’s word, because nothing in a Parquet artifact records the resolution it was written at. The decoder measures bar spacing against it and rejects a file finer than declared — 1-minute bars declared Day1, where every derived close_time would stretch over the next 1,439 bars. The opposite mistake is undetectable and the worse of the two: daily bars declared Min1 are spaced far wider than 60 seconds, so they pass, and each bar then enters the timeline a minute after its day opened rather than at the end of it — a full day of lookahead. See parquet::read_export, whose rustdoc states the reach of the check in full. (Not linked: that module is behind its own feature, so the link would be dead in a build without it.)

pub fn path(&self) -> &Path

The artifact’s location on disk.

pub fn dataset(&self) -> LseDataset

The dataset the artifact was exported from.

pub fn symbol(&self) -> &str

The vault display symbol the artifact was exported for.

Every export is single-symbol — the provider offers no multi-symbol spelling — so this is the value every row’s symbol column must carry.

pub fn timeframe(&self) -> LseExportTimeframe

The timeframe the artifact contains.

pub fn range(&self) -> LseExportRange

The date range the artifact covers.

pub fn exchange_id(&self) -> ExchangeId

The venue every event decoded from this artifact is stamped with.

Trait Implementations

impl Clone for LseExport

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 LseExport

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

Formats the value using the given formatter.

impl Eq for LseExport

impl PartialEq for LseExport

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for LseExport