Struct Row 

pub struct Row { /* private fields */ }

A single row returned from a query, with named columns.

Implementations

impl Row

pub fn new(columns: Vec<String>, values: Vec<Value>) -> Self

Construct a Row from parallel column-name and value vectors.

Panics

Does not panic; callers are responsible for ensuring columns and values have the same length.

pub fn get(&self, col: &str) -> Option<&Value>

Look up a value by column name. Returns None if the column does not exist in this row.

pub fn get_by_index(&self, i: usize) -> Option<&Value>

Look up a value by zero-based column index.

pub fn try_get<T: FromValue>(&self, col: &str) -> Result<T, OxiSqlError>

Type-safe extraction by column name.

Looks up the column and converts via FromValue. Returns OxiSqlError::Other if the column does not exist, or OxiSqlError::TypeMismatch if the value cannot be converted.

Example

let row = Row::new(vec!["id".into()], vec![Value::I64(42)]);
let id: i64 = row.try_get("id").unwrap();
assert_eq!(id, 42);

pub fn try_get_by_index<T: FromValue>(&self, i: usize) -> Result<T, OxiSqlError>

Type-safe extraction by column index.

Like try_get but uses a zero-based index.

pub fn columns(&self) -> &[String]

Return the ordered column names for this row.

pub fn values(&self) -> &[Value]

Return the ordered values for this row.

pub fn column_count(&self) -> usize

Return the number of columns in this row.

pub fn is_null(&self, col: &str) -> bool

Check whether a column value is NULL.

Returns true if the column exists and its value is Value::Null. Returns false if the column does not exist or has a non-null value.

pub fn into_values(self) -> Vec<Value>

Consume the row and return its values, discarding column names.

Trait Implementations

impl Clone for Row

fn clone(&self) -> Row

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Row

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

Formats the value using the given formatter.

impl Display for Row

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

Formats the value using the given formatter.