sqlx_postgres/message/flush.rs
use crate::message::{FrontendMessage, FrontendMessageFormat};
use sqlx_core::Error;
use std::num::Saturating;
/// The Flush message does not cause any specific output to be generated,
/// but forces the backend to deliver any data pending in its output buffers.
///
/// A Flush must be sent after any extended-query command except Sync, if the
/// frontend wishes to examine the results of that command before issuing more commands.
#[derive(Debug)]
pub struct Flush;
impl FrontendMessage for Flush {
const FORMAT: FrontendMessageFormat = FrontendMessageFormat::Flush;
#[inline(always)]
fn body_size_hint(&self) -> Saturating<usize> {
Saturating(0)
}
#[inline(always)]
fn encode_body(&self, _buf: &mut Vec<u8>) -> Result<(), Error> {
Ok(())
}
}