Struct redshift::writer::ColumnDefinition

pub struct ColumnDefinition<'a, T> {
    pub name: &'a str,
    pub extract_column: Box<Fn(&T) -> String>,
}

Structure to define column name and and column value

Example

extern crate redshift;
use std::str;

struct TestItem<'a> {
    pub A: &'a str,
    pub B: &'a str,
    pub C: &'a str,
}

fn main() {
    let test_column_definitions = vec![
        redshift::writer::ColumnDefinition::<TestItem> {
            name:  "Acolumn",
            extract_column: Box::new(move |i: &TestItem| i.A.to_string().clone()),
        },
        redshift::writer::ColumnDefinition::<TestItem> {
            name: "Bcolumn",
            extract_column: Box::new(move |i: &TestItem| i.B.to_string().clone()),
        },
        redshift::writer::ColumnDefinition::<TestItem> {
            name: "Ccolumn",
            extract_column: Box::new(move |i: &TestItem| i.C.to_string().clone()),
        },
    ];
}

Fields

name: &'a str

Column name

extract_column: Box<Fn(&T) -> String>

Method to extract the column value from item T