Enum BackendMessage 

#[non_exhaustive]
pub enum BackendMessage {
    Authentication(AuthenticationMessage),
    BackendKeyData {
        process_id: i32,
        secret_key: i32,
    },
    CommandComplete(String),
    DataRow(Vec<Option<Bytes>>),
    ErrorResponse(ErrorFields),
    NoticeResponse(ErrorFields),
    ParameterStatus {
        name: String,
        value: String,
    },
    ReadyForQuery {
        status: u8,
    },
    RowDescription(Vec<FieldDescription>),
}

Backend message (server → client)

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Authentication(AuthenticationMessage)

Authentication request

BackendKeyData

Backend key data (for cancellation)

Fields

process_id: i32

Process ID

secret_key: i32

Secret key

CommandComplete(String)

Command complete

DataRow(Vec<Option<Bytes>>)

Data row

ErrorResponse(ErrorFields)

Error response

NoticeResponse(ErrorFields)

Notice response

ParameterStatus

Parameter status

Fields

name: String

Parameter name

value: String

Parameter value

ReadyForQuery

Ready for query

Fields

status: u8

Transaction status

RowDescription(Vec<FieldDescription>)

Row description

Trait Implementations

impl Clone for BackendMessage

fn clone(&self) -> BackendMessage

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BackendMessage

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

Formats the value using the given formatter.