Struct convergence::protocol_ext::DataRowBatch

pub struct DataRowBatch { /* private fields */ }

Supports batched rows for e.g. returning portal result sets.

NB: this struct only performs limited validation of column consistency across rows.

Implementations

impl DataRowBatch

pub fn new(format_code: FormatCode, num_cols: usize) -> Self

Creates a new row batch using the given format code, requiring a certain number of columns per row.

pub fn from_row_desc(desc: &RowDescription) -> Self

Creates a DataRowBatch from the given RowDescription.

pub fn create_row(&mut self) -> DataRowWriter<'_>

Starts writing a new row.

Returns a DataRowWriter that is responsible for the actual value encoding.

pub fn num_rows(&self) -> usize

Returns the number of rows currently written to this batch.

Trait Implementations

impl Encoder<DataRowBatch> for ConnectionCodec

type Error = ProtocolError

The type of encoding errors.

fn encode( &mut self, item: DataRowBatch, dst: &mut BytesMut ) -> Result<(), Self::Error>

Encodes a frame into the buffer provided.