Trait DataChunkTestExt

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;
}

Test utilities for DataChunk.

Provided Associated Constants

const SEED: u64 = 18_403_958_415_801_939_711u64

SEED for generating data chunk.

Required Methods

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

fn with_invisible_holes(self) -> Self

where Self: Sized,

Insert one invisible hole after every record.

fn assert_valid(&self)

Panic if the chunk is invalid.

fn gen_data_chunk( chunk_offset: usize, chunk_size: usize, data_types: &[DataType], string_properties: &VarcharProperty, visibility_ratio: f64, ) -> Self

Generate data chunk when supplied with chunk_size and column data types.

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,

Generate data chunks when supplied with chunk_size and column data types.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl DataChunkTestExt for DataChunk