Struct SavedSample 

pub struct SavedSample {
    pub scope: String,
    pub method: String,
    pub per: Option<String>,
    pub rows: usize,
    pub seed: u64,
    pub path: Option<DrawPath>,
    pub through: Option<Box<ViewSettings>>,
}

A view’s sample as a view keeps it: which rows, how they are picked, how many, and the seed that draws the same ones again.

Fields

scope: String

Which rows, as the Sample form’s scope command says them: view, source, rows 1..5000, files 1,3, partition year=2024, time date=2024-01..2024-02.

method: String

random, per value, first rows or every row.

per: Option<String>

The column an equal-per-value sample splits by.

rows: usize

Rows to keep: in all, or per value.

seed: u64

path: Option<DrawPath>

How a random sample of a stream was drawn: a reservoir, or row by row with chance rows / of. Drawn the same way again, the same seed keeps the same rows, whatever is counted by then.

through: Option<Box<ViewSettings>>

The view the sample was drawn through, when it was drawn from a view’s rows rather than the source: its query, filters, sort, column types and reshape, replayed before the sample is drawn.

Implementations

impl SavedSample

pub fn of( sample: &Sample, path: Option<DrawPath>, through: Option<ViewSettings>, ) -> Self

sample as a view keeps it, drawn through the view given, the way path says.

pub fn sample(&self) -> Result<Sample>

The sample this draws, or why it cannot be read.

Trait Implementations

impl Clone for SavedSample

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 SavedSample

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for SavedSample

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for SavedSample

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.