vortex_layout::layouts::chunked::stats_table

Struct StatsTable

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

A table of statistics for a column. Each row of the stats table corresponds to a chunk of the column.

Note that it’s possible for the stats table to have no statistics.

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impl StatsTable

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pub fn try_new( column_dtype: DType, array: ArrayData, stats: Arc<[Stat]>, ) -> VortexResult<Self>

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pub fn dtype_for_stats_table( column_dtype: &DType, present_stats: &[Stat], ) -> DType

Returns the DType of the statistics table given a set of statistics and column DType.

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pub fn column_dtype(&self) -> &DType

The DType of the column for which these stats are computed.

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pub fn array(&self) -> &ArrayData

The struct array backing the stats table

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pub fn present_stats(&self) -> &[Stat]

The statistics that are included in the table.

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pub fn to_stats_set(&self, stats: &[Stat]) -> VortexResult<StatsSet>

Return an aggregated stats set for the table.

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pub fn get_stat(&self, stat: Stat) -> VortexResult<Option<ArrayData>>

Return the array for a given stat.

Trait Implementations§

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impl Clone for StatsTable

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fn clone(&self) -> StatsTable

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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fn borrow_mut(&mut self) -> &mut T

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impl<T> CloneToUninit for T
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unsafe fn clone_to_uninit(&self, dst: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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type Owned = T

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type Error = Infallible

The type returned in the event of a conversion error.
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Performs the conversion.
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type Error = <U as TryFrom<T>>::Error

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