Struct QueryId 

#[repr(transparent)]
pub struct QueryId(pub [u8; 16]);

Identifies one query execution.

Random 128-bit identifier drawn from the operating-system CSPRNG by new_random; never derived only from timestamps and never reused within a database. The all-zero value is reserved.

Canonical text form: strict lowercase hexadecimal, 32 characters. Parsing is lenient and additionally accepts the hyphenated UUID form (8-4-4-4-12) and uppercase hex digits.

Tuple Fields

0: [u8; 16]

Implementations

impl QueryId

pub const ZERO: Self

The all-zero identifier (reserved; never produced by Self::new_random in practice).

pub fn new_random() -> Self

Draws a fresh random identifier from the operating-system CSPRNG. Never derived only from timestamps; with 128 random bits the result is never reused within a database.

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

Wraps raw bytes without copying.

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

Borrows the raw 16 bytes.

pub fn to_hex(self) -> String

Canonical text form: strict lowercase hexadecimal (32 chars).

Trait Implementations

impl Clone for QueryId

fn clone(&self) -> QueryId

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for QueryId

impl Debug for QueryId

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for QueryId

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>

where D: Deserializer<'de>,

Human-readable deserializers accept any string spelling accepted by FromStr; binary deserializers expect the compact 16-byte newtype form.

impl Display for QueryId

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

Formats the value using the given formatter.

impl Eq for QueryId

impl FromStr for QueryId

fn from_str(text: &str) -> Result<Self, Self::Err>

Parses the canonical 32-character hex form. Lenient by contract: hyphens are ignored at any position (so the hyphenated UUID form 8-4-4-4-12 parses) and uppercase hex digits are accepted. The canonical lowercase form emitted by Display and to_hex is the only stable spelling for persistence.

type Err = IdParseError

The associated error which can be returned from parsing.

impl Hash for QueryId

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 QueryId

fn cmp(&self, other: &QueryId) -> 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 QueryId

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for QueryId

fn partial_cmp(&self, other: &QueryId) -> 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 QueryId

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>

where S: Serializer,

Human-readable serializers (e.g. JSON) receive the canonical hex string; binary serializers receive the compact 16-byte newtype form, byte-identical to a derived implementation.

impl StructuralPartialEq for QueryId