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|
pub fn select(
dbconn: &rusqlite::Connection,
table_name: &str,
record_id: &str,
) -> yaml_rust::Yaml {
use crate::yaml::Yaml;
let mut stmt = dbconn.prepare(
&format!(
r#"
SELECT
*
FROM {}
WHERE :pk_column = :pk;
"#,
table_name,
),
).unwrap();
let column_count = stmt.column_count();
let rows = stmt.query_map(
rusqlite::named_params! {
":pk_column": "id",
":pk": record_id,
},
|row| {
// let data: [dyn rusqlite::types::FromSql; column_count] = [rusqlite::types::Null; column_count];
// let data: Vec<dyn rusqlite::types::FromSql>
// = Vec::with_capacity(column_count);
// let data = Vec::with_capacity(column_count);
let data: Vec<Yaml> = Vec::with_capacity(column_count);
// for i in 0..=column_count {
// data.push(row.get(i));
// }
// TODO: column values must be converted to yaml_rust::Yaml in this
// closure.
for i in 0..=column_count {
data.push(row.get(i)?);
}
Ok(data)
},
).unwrap();
// sqlite3 -header test.db '
// SELECT "name"
// FROM pragma_table_info("test")
// WHERE "pk" != 0;'
todo!();
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn select_extracts_a_database_record_as_yaml() {
struct TestRecord {
count: i16,
description: String,
}
let record = TestRecord {
count: 99,
description: "This is a test.
With multiple paragraphs.".to_owned(),
};
let conn = rusqlite::Connection::open_in_memory().unwrap();
conn.execute(
r#"
CREATE TABLE "test" (
id INTEGER PRIMARY KEY,
count INTEGER,
description TEXT
);
"#,
[]
).unwrap();
{
let mut stmt = conn.prepare(r#"
INSERT INTO "test"
(count, description)
VALUES
(?, ?);
"#).unwrap();
stmt.insert(
rusqlite::params![record.count, record.description],
).unwrap();
let got = select(&conn, "test", "1");
dbg!(&got);
}
conn.close().unwrap();
}
}
|
