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Do not panic by default

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Replace `Row::get` by `Row::get_checked`,
And rename original `Row::get` to `Row::get_unwrap`.
`Stmt::query_map`, `Stmt::query_map_named`, `Stmt::query_row`,
`Conn::query_row` and `Conn::query_row_named` callback parameter must return a `Result`.
This commit is contained in:
gwenn
2019-02-21 20:48:09 +01:00
parent 915c10c5bf
commit 6d9ae896b5
14 changed files with 169 additions and 162 deletions
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22
src/statement.rs
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@@ -176,7 +176,7 @@ impl Statement<'_> {
/// let mut names = Vec::new();
/// while let Some(result_row) = rows.next() {
/// let row = result_row?;
/// names.push(row.get(0));
/// names.push(row.get(0)?);
/// }
///
/// Ok(names)
@@ -267,7 +267,7 @@ impl Statement<'_> {
where
P: IntoIterator,
P::Item: ToSql,
F: FnMut(&Row<'_, '_>) -> T,
F: FnMut(&Row<'_, '_>) -> Result<T>,
{
let rows = self.query(params)?;
Ok(MappedRows::new(rows, f))
@@ -306,7 +306,7 @@ impl Statement<'_> {
f: F,
) -> Result<MappedRows<'_, F>>
where
F: FnMut(&Row<'_, '_>) -> T,
F: FnMut(&Row<'_, '_>) -> Result<T>,
{
let rows = self.query_named(params)?;
Ok(MappedRows::new(rows, f))
@@ -354,7 +354,7 @@ impl Statement<'_> {
/// fn get_names(conn: &Connection) -> Result<Vec<Person>> {
/// let mut stmt = conn.prepare("SELECT name FROM people WHERE id = :id")?;
/// let rows =
/// stmt.query_and_then_named(&[(":id", &"one")], |row| name_to_person(row.get(0)))?;
/// stmt.query_and_then_named(&[(":id", &"one")], |row| name_to_person(row.get(0)?))?;
///
/// let mut persons = Vec::new();
/// for person_result in rows {
@@ -410,11 +410,11 @@ impl Statement<'_> {
where
P: IntoIterator,
P::Item: ToSql,
F: FnOnce(&Row<'_, '_>) -> T,
F: FnOnce(&Row<'_, '_>) -> Result<T>,
{
let mut rows = self.query(params)?;
rows.get_expected_row().map(|r| f(&r))
rows.get_expected_row().and_then(|r| f(&r))
}
/// Consumes the statement.
@@ -798,8 +798,8 @@ mod test {
.unwrap();
let mut rows = stmt.query_named(&[(":name", &"one")]).unwrap();
let id: i32 = rows.next().unwrap().unwrap().get(0);
assert_eq!(1, id);
let id: Result<i32> = rows.next().unwrap().and_then(|row| row.get(0));
assert_eq!(Ok(1), id);
}
#[test]
@@ -816,8 +816,8 @@ mod test {
.unwrap();
let mut rows = stmt
.query_map_named(&[(":name", &"one")], |row| {
let id: i32 = row.get(0);
2 * id
let id: Result<i32> = row.get(0);
id.map(|i| 2 * i)
})
.unwrap();
@@ -840,7 +840,7 @@ mod test {
.unwrap();
let mut rows = stmt
.query_and_then_named(&[(":name", &"one")], |row| {
let id: i32 = row.get(0);
let id: i32 = row.get(0)?;
if id == 1 {
Ok(id)
} else {