Struct QueryId 

pub struct QueryId(pub u64);

A caller-supplied opaque tag for a registered query, echoed back via Query::id. The engine never interprets it — it does no id generation, hashing, de-duplication, or refcounting. Identity and de-dup of “the same query” are the caller’s concern: a layer that materializes/keeps each query’s state can map its own ids to Query handles and reuse them, which is exactly the place that owns the per-subscriber hydration the engine’s raw change stream deliberately does not. Pass any scheme that suits you (a content hash, a uuid, a counter).

Tuple Fields

0: u64

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 Debug for QueryId

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

Formats the value using the given formatter.

impl Hash for QueryId

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

where __H: Hasher,

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

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 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 Copy for QueryId

impl Eq for QueryId

impl StructuralPartialEq for QueryId