Wikipedia:Database reports/Unbelievable life spans/Configuration
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Source code
[edit]/*
Copyright 2012, 2013 bjweeks, MZMcBride, Tim Landscheidt
Copyright 2021 Kunal Mehta <legoktm@debian.org>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
use anyhow::Result;
use dbreps2::{linker, str_vec, Frequency, Report};
use mysql_async::prelude::*;
use mysql_async::Conn;
use time::OffsetDateTime;
pub struct Row {
page_namespace: u32,
page_title: String,
birth_year: i32,
death_year: i32,
}
pub struct UnbelievableLifeSpans {}
impl Report<Row> for UnbelievableLifeSpans {
fn title(&self) -> &'static str {
"Unbelievable life spans"
}
fn frequency(&self) -> Frequency {
Frequency::Weekly
}
fn query(&self) -> &'static str {
r#"
/* unbelievablelifespans.rs SLOW_OK */
SELECT
page_namespace,
page_title,
deathyear
FROM
(
SELECT
page_namespace,
page_title AS page_title,
CAST(SUBSTRING_INDEX(cl3.cl_to, '_', 1) AS UNSIGNED) AS deathyear
FROM
categorylinks AS cl1
LEFT JOIN categorylinks AS cl2 ON cl1.cl_from = cl2.cl_from
AND cl2.cl_to IN ('Longevity_traditions', 'Longevity_claims')
JOIN categorylinks AS cl3 ON cl1.cl_from = cl3.cl_from
AND cl3.cl_to REGEXP '^[0-9]+_deaths$'
JOIN page ON page_id = cl1.cl_from
WHERE
cl1.cl_to = CONCAT(?, '_births')
AND cl2.cl_from IS NULL
) AS BornAndDeads
WHERE
? > deathyear
OR deathyear - ? > 122;
"#
}
async fn run_query(&self, conn: &mut Conn) -> Result<Vec<Row>> {
let current_year = OffsetDateTime::now_utc().year();
let mut rows = vec![];
for birth_year in 1..=current_year {
let year_rows = conn
.exec_map(
self.query(),
(birth_year, birth_year, birth_year),
|(page_namespace, page_title, death_year)| Row {
page_namespace,
page_title,
birth_year,
death_year,
},
)
.await?;
rows.extend(year_rows);
}
Ok(rows)
}
fn headings(&self) -> Vec<&'static str> {
vec!["Page", "Birth year", "Death year", "Life span"]
}
fn format_row(&self, row: &Row) -> Vec<String> {
str_vec![
linker(row.page_namespace, &row.page_title),
row.birth_year,
row.death_year,
row.death_year - row.birth_year
]
}
fn code(&self) -> &'static str {
include_str!("unbelievablelifespans.rs")
}
}