Struct mysql::Row

pub struct Row { /* fields omitted */ }

Client side representation of a MySql row.

It allows you to move column values out of a row with Row::take method but note that it makes row incomplete. Calls to from_row_opt on incomplete row will return Error::FromRowError and also numerical indexing on taken columns will panic.

Methods

impl Row

pub fn len(&self) -> usize

Returns length of a row.

pub fn as_ref(&self, index: usize) -> Option<&Value>

Returns reference to the value of a column with index index if it exists and wasn't taken by Row::take method.

Non panicking version of row[usize].

pub fn get<T, I>(&self, index: I) -> Option<T> where     I: ColumnIndex,     T: FromValue,

Will copy value at index index if it was not taken by Row::take earlier, then will convert it to T.

pub fn get_opt<T, I>(&self, index: I) -> Option<Result<T, FromValueError>> where     I: ColumnIndex,     T: FromValue,

Will copy value at index index if it was not taken by Row::take or Row::take_opt earlier, then will attempt convert it to T. Unlike Row::get, Row::get_opt will allow you to directly handle errors if the value could not be converted to T.

pub fn take<T, I>(&mut self, index: I) -> Option<T> where     I: ColumnIndex,     T: FromValue,

Will take value of a column with index index if it exists and wasn't taken earlier then will converts it to T.

pub fn take_opt<T, I>(&mut self, index: I) -> Option<Result<T, FromValueError>> where     I: ColumnIndex,     T: FromValue,

Will take value of a column with index index if it exists and wasn't taken earlier then will attempt to convert it to T. Unlike Row::take, Row::take_opt will allow you to directly handle errors if the value could not be converted to T.

Important traits for Vec<u8>

impl Write for Vec<u8>

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

Unwraps values of a row.

Panics

Panics if any of columns was taken by take method.

Trait Implementations

impl FromRow for Row

fn from_row(row: Row) -> Row

fn from_row_opt(row: Row) -> Result<Row, FromRowError> where     Row: Sized,

impl Clone for Row

fn clone(&self) -> Row

Returns a copy 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<(), Error>

Formats the value using the given formatter.

impl Index<usize> for Row

type Output = Value

The returned type after indexing.

fn index(&'a self, index: usize) -> &'a Value

Performs the indexing (container[index]) operation.

impl<'a> Index<&'a str> for Row

type Output = Value

The returned type after indexing.

fn index(&'r self, index: &'a str) -> &'r Value

Performs the indexing (container[index]) operation.

impl PartialEq<Row> for Row

fn eq(&self, other: &Row) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Row) -> bool

This method tests for !=.