Struct ColumnMap 

pub struct ColumnMap { /* private fields */ }

Column name to index lookup built from a single row’s column metadata.

Construct one inside your FromRow implementation to access columns by name instead of positional index.

Implementations

impl ColumnMap

pub fn from_row(row: &Row) -> Self

Build lookup from a row’s column metadata.

pub fn index(&self, name: &str) -> Result<i32>

Look up the column index by name.

Returns the zero-based column index, or an error if the column is not found.

Errors

Returns an error if the column name does not exist in the row.

pub fn get<T: FromValue>(&self, row: &Row, name: &str) -> Result<T>

Get a typed value by column name.

Looks up the column index by name and extracts the raw libsql::Value, then converts it via the FromValue trait. Supported types: String, i32, i64, u32, u64, f64, bool, Vec<u8>, Option<T>, and libsql::Value.

Errors

Returns an error if the column is not found or the value cannot be converted to T.