Struct Row 

pub struct Row<'a> {
    pub table_index: i64,
    pub row_index: Option<i64>,
    pub range_index: Option<i64>,
    /* private fields */
}

A single input row, borrowed from the reader’s buffer.

The row is not decoded until you ask for it, so a job that only forwards rows never pays to parse them — see Row::raw.

Fields

table_index: i64

Index of the input table this row came from.

Stays 0 unless the operation enables control_attributes.enable_table_index.

row_index: Option<i64>

Index of this row within its input table, if enable_row_index is set.

range_index: Option<i64>

Index of the requested range this row came from, if enable_range_index is set.

Implementations

impl<'a> Row<'a>

pub fn raw(&self) -> &'a [u8]

The row’s raw YSON bytes, exactly as they arrived.

Writing these straight to an output table reproduces the row byte-for-byte, which decoding and re-encoding does not guarantee (map keys come back sorted). This is what an identity job should use.

pub fn offset(&self) -> u64

Offset of this row from the start of the input stream, for diagnostics.

pub fn parse<T: Deserialize<'a>>(&self) -> Result<T>

Decodes the row into T.

T may borrow from the row (&str, &[u8]), which avoids copying string columns; such a T cannot outlive this row.

Errors

Returns JobError::Yson if the row does not match T’s shape.

pub fn value(&self) -> Result<YsonValue>

Decodes the row into the dynamic YsonValue representation.

Errors

Returns JobError::Yson if the row is not valid YSON.

Trait Implementations

impl<'a> Clone for Row<'a>

fn clone(&self) -> Row<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Copy for Row<'a>

impl<'a> Debug for Row<'a>

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

Formats the value using the given formatter.