Struct Zoned 

pub struct Zoned;

Reads data alongside the zone statistics summarising it.

Its zone table has the aggregate schema of vortex.zoned layouts; legacy vortex.stats layouts reach it through LegacyStats, which converts their tables. An expression containing abstract statistic functions can rewrite it into a pruning plan that retains only the zone-statistics child.

Trait Implementations

impl Clone for Zoned

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 Zoned

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

Formats the value using the given formatter.

impl PlanVTable for Zoned

fn compile( plan: &Plan<Self>, rows: Range<u64>, mask: &Mask, compiler: &mut Compiler<'_>, ) -> VortexResult<Option<Chain>>

A data plan compiles as its data child. A pruning plan whose zones an earlier execution proved emits the expanded result; otherwise it collects the whole zone table, proves the expression over it, keeps the result, and emits it expanded to the selected rows.

type PlanData = ZonedData

Operator-specific data, excluding children.

type Metadata = EmptyMetadata

Serialized form of PlanData.

fn id(&self) -> PlanId

Returns the globally unique operator ID.

fn fmt(plan: &Plan<Self>, formatter: &mut Formatter<'_>) -> Result

Writes operator-specific fields after the plan’s standard display summary.

fn metadata(_plan: &Plan<Self>) -> Option<Self::Metadata>

Returns the serializable metadata for this operator.

fn with_children( plan: &Plan<Self>, children: &PlanChildren, data: &mut Self::PlanData, ) -> VortexResult<()>

Refreshes cloned operator data after the common child container is replaced.

fn child_name(plan: &Plan<Self>, index: usize) -> Cow<'_, str>

Returns the display name of the child at index.

fn reach( plan: &Plan<Self>, rows: Range<u64>, at: &Reach, visit: &mut dyn FnMut(SegmentId, Range<u64>), ) -> VortexResult<()>

Visits every segment compiling this plan over rows could read, under any mask, with the rows of the scanned plan it is read for, so a segment more than one reader reads is decoded once. at maps this plan’s rows to the scanned plan’s.