Trait DataChunkTestExt

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pub trait DataChunkTestExt {
    const SEED: u64 = 18_403_958_415_801_939_711u64;

    // Required methods
    fn from_pretty(s: &str) -> Self;
    fn with_invisible_holes(self) -> Self
       where Self: Sized;
    fn assert_valid(&self);
    fn gen_data_chunk(
        chunk_offset: usize,
        chunk_size: usize,
        data_types: &[DataType],
        string_properties: &VarcharProperty,
        visibility_ratio: f64,
    ) -> Self;
    fn gen_data_chunks(
        num_of_chunks: usize,
        chunk_size: usize,
        data_types: &[DataType],
        string_properties: &VarcharProperty,
        visibility_ratio: f64,
    ) -> Vec<Self>
       where Self: Sized;
}

Expand description

Test utilities for DataChunk.

Provided Associated Constants§

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const SEED: u64 = 18_403_958_415_801_939_711u64

SEED for generating data chunk.

Required Methods§

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fn from_pretty(s: &str) -> Self

Parse a chunk from string.

§Format

The first line is a header indicating the column types. The following lines indicate rows within the chunk. Each line starts with an operation followed by values. NULL values are represented as ..

§Example

use risingwave_common::array::{DataChunk, DataChunkTestExt};
let chunk = DataChunk::from_pretty(
    "I I I I      // type chars
     2 5 . .      // '.' means NULL
     2 5 2 6 D    // 'D' means deleted in visibility
     . . 4 8      // ^ comments are ignored
     . . 3 4",
);

// type chars:
//     B: bool
//     I: i64
//     i: i32
//     F: f64
//     f: f32
//     T: str
//    TS: Timestamp
//   SRL: Serial
// <i,f>: struct

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