Struct csv_diff::csv_diff::CsvByteDiffLocalBuilder

pub struct CsvByteDiffLocalBuilder<'tp, T: CsvHashTaskSpawnerLocal> { /* private fields */ }

Create a CsvByteDiffLocal with configuration options.

Example: create a CsvByteDiffLocal, where column 1 and column 3 are treated as a compound primary key.

use csv_diff::{csv_diff::{CsvByteDiffLocal, CsvByteDiffLocalBuilder}, csv::Csv};
use csv_diff::diff_row::{ByteRecordLineInfo, DiffByteRecord};
use std::collections::HashSet;
use std::iter::FromIterator;
// some csv data with a header, where the first column and third column represent a compound key
let csv_data_left = "\
                    id,name,commit_sha\n\
                    1,lemon,efae52\n\
                    2,strawberry,a33411"; // this csv line is seen as "Deleted" and not "Modified"
                                          // because "id" and "commit_sha" are different and both columns
                                          // _together_ represent the primary key
let csv_data_right = "\
                    id,name,commit_sha\n\
                    1,lemon,efae52\n\
                    2,strawberry,ddef23"; // this csv line is seen as "Added" and not "Modified",
                                          // because "id" and "commit_sha" are different and both columns
                                          // _together_ represent the primary key

let csv_byte_diff = CsvByteDiffLocalBuilder::new()
    .primary_key_columns(vec![0usize, 2])
    .build()?;

let mut diff_byte_records = csv_byte_diff.diff(
    Csv::with_reader_seek(csv_data_left.as_bytes()),
    Csv::with_reader_seek(csv_data_right.as_bytes()),
)?;

diff_byte_records.sort_by_line();

let diff_byte_rows = diff_byte_records.as_slice();

assert_eq!(
    diff_byte_rows,
    &[
        DiffByteRecord::Delete(ByteRecordLineInfo::new(
            csv::ByteRecord::from(vec!["2", "strawberry", "a33411"]),
            3
        ),),
        DiffByteRecord::Add(ByteRecordLineInfo::new(
            csv::ByteRecord::from(vec!["2", "strawberry", "ddef23"]),
            3
        ),)
    ]
);
Ok(())

Implementations

impl<'tp, T> CsvByteDiffLocalBuilder<'tp, T>where T: CsvHashTaskSpawnerLocal,

pub fn primary_key_columns( self, columns: impl IntoIterator<Item = usize> ) -> Self

impl<'tp> CsvByteDiffLocalBuilder<'tp, CsvHashTaskSpawnerLocalRayon<'tp>>

pub fn new() -> Self

pub fn rayon_thread_pool(self, thread_pool: &'tp ThreadPool) -> Self

pub fn build( self ) -> Result<CsvByteDiffLocal<CsvHashTaskSpawnerLocalRayon<'tp>>, CsvByteDiffBuilderError>

Trait Implementations

impl<'tp, T: Debug + CsvHashTaskSpawnerLocal> Debug for CsvByteDiffLocalBuilder<'tp, T>

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

Formats the value using the given formatter.

impl<'tp, T: Default + CsvHashTaskSpawnerLocal> Default for CsvByteDiffLocalBuilder<'tp, T>

fn default() -> CsvByteDiffLocalBuilder<'tp, T>

Returns the “default value” for a type.