Struct ProtocolVersion 

pub struct ProtocolVersion {
    pub major: u16,
    pub minor: u16,
}

Fields

major: u16

minor: u16

Implementations

impl ProtocolVersion

pub const V3_0: Self

pub const V3_2: Self

pub const LATEST: Self = Self::V3_2

pub fn from_raw(raw: i32) -> Self

pub const fn raw(self) -> i32

pub fn negotiate(self) -> Result<Self, PgWireError>

Select the newest protocol version this crate supports without negotiating to a version newer than the frontend requested.

pub fn negotiate_with_max( self, newest_supported: Self, ) -> Result<Self, PgWireError>

Select a protocol version no newer than either the frontend request or the newest version implemented by the embedding server.

pub const fn is_supported_server_max(self) -> bool

Versions an embedding server may configure as its implementation maximum. PostgreSQL 18 has implementations for 3.0 and 3.2; a 3.1 frontend request can remain selected, but 3.1 is not a server maximum.

Trait Implementations

impl Clone for ProtocolVersion

fn clone(&self) -> ProtocolVersion

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ProtocolVersion

impl Debug for ProtocolVersion

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

Formats the value using the given formatter.

impl Eq for ProtocolVersion

impl Ord for ProtocolVersion

fn cmp(&self, other: &ProtocolVersion) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)

Restrict a value to a certain range.

impl PartialEq for ProtocolVersion

fn eq(&self, other: &ProtocolVersion) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl PartialOrd for ProtocolVersion

fn partial_cmp(&self, other: &ProtocolVersion) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for ProtocolVersion