Struct StatementFingerprint 

#[repr(transparent)]
pub struct StatementFingerprint(pub Hash128);

Stable identity for a query pattern, independent of literal values.

Two executions of FROM t FILTER {x == 1} and FROM t FILTER {x == 2} produce the same fingerprint.

Tuple Fields

0: Hash128

Implementations

impl StatementFingerprint

pub const fn new(value: u128) -> Self

pub const fn as_u128(&self) -> u128

pub const fn to_le_bytes(&self) -> [u8; 16]

pub const fn from_le_bytes(bytes: [u8; 16]) -> Self

pub fn to_hex(&self) -> String

Methods from Deref<Target = u128>

pub const MIN: u128 = 0

pub const MAX: u128

pub const BITS: u32

Trait Implementations

impl Clone for StatementFingerprint

fn clone(&self) -> StatementFingerprint

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StatementFingerprint

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

Formats the value using the given formatter.

impl Default for StatementFingerprint

fn default() -> StatementFingerprint

Returns the “default value” for a type.

impl Deref for StatementFingerprint

type Target = u128

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl<'de> Deserialize<'de> for StatementFingerprint

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl From<Hash128> for StatementFingerprint

fn from(hash: Hash128) -> Self

Converts to this type from the input type.

impl From<StatementFingerprint> for Hash128

fn from(fp: StatementFingerprint) -> Self

Converts to this type from the input type.

impl From<u128> for StatementFingerprint

fn from(value: u128) -> Self

Converts to this type from the input type.

impl Hash for StatementFingerprint

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for StatementFingerprint

fn cmp(&self, other: &StatementFingerprint) -> 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.

impl PartialEq for StatementFingerprint

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for StatementFingerprint

fn partial_cmp(&self, other: &StatementFingerprint) -> 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 Serialize for StatementFingerprint

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for StatementFingerprint

impl Eq for StatementFingerprint

impl StructuralPartialEq for StatementFingerprint