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use byteorder::LittleEndian;
use crate::io::Buf;
// https://dev.mysql.com/doc/dev/mysql-server/8.0.12/page_protocol_com_stmt_prepare.html#sect_protocol_com_stmt_prepare_response_ok
#[derive(Debug)]
pub(crate) struct ComStmtPrepareOk {
pub(crate) statement_id: u32,
/// Number of columns in the returned result set (or 0 if statement
/// does not return result set).
pub(crate) columns: u16,
/// Number of prepared statement parameters ('?' placeholders).
pub(crate) params: u16,
/// Number of warnings.
pub(crate) warnings: u16,
}
impl ComStmtPrepareOk {
pub(crate) fn read(mut buf: &[u8]) -> crate::Result<Self> {
let header = buf.get_u8()?;
if header != 0x00 {
return Err(protocol_err!(
"expected COM_STMT_PREPARE_OK (0x00); received 0x{:X}",
header
))?;
}
let statement_id = buf.get_u32::<LittleEndian>()?;
let columns = buf.get_u16::<LittleEndian>()?;
let params = buf.get_u16::<LittleEndian>()?;
// -not used- : string<1>
buf.advance(1);
let warnings = buf.get_u16::<LittleEndian>()?;
Ok(Self {
statement_id,
columns,
params,
warnings,
})
}
}