ReadPlan

parquet::arrow::arrow_reader::read_plan

Struct ReadPlan 

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pub struct ReadPlan {
    batch_size: usize,
    selection: Option<VecDeque<RowSelector>>,
}
Expand description

A plan reading specific rows from a Parquet Row Group.

See ReadPlanBuilder to create ReadPlans

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§batch_size: usize

The number of rows to read in each batch

§selection: Option<VecDeque<RowSelector>>

Row ranges to be selected from the data source

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impl ReadPlan

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pub fn selection_mut(&mut self) -> Option<&mut VecDeque<RowSelector>>

Returns a mutable reference to the selection, if any

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pub fn batch_size(&self) -> usize

Return the number of rows to read in each output batch

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impl Debug for ReadPlan

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

Formats the value using the given formatter. Read more

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