Struct mz_storage_operators::persist_source::Subtime

pub struct Subtime(u64);

This opaque token represents progress within a timestamp, allowing finer-grained frontier progress than would otherwise be possible.

This is “opaque” since we’d like to reserve the right to change the definition in the future without downstreams being able to rely on the precise representation. (At the moment, this is a simple batch counter, though we may change it to eg. reflect progress through the keyspace in the future.)

Tuple Fields

0: u64

Implementations

impl Subtime

pub const fn least_summary() -> Self

The smallest non-zero summary for the opaque timestamp type.

Trait Implementations

impl Clone for Subtime

fn clone(&self) -> Subtime

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Subtime

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

Formats the value using the given formatter.

impl Default for Subtime

fn default() -> Subtime

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Subtime

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Hash for Subtime

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 Subtime

fn cmp(&self, other: &Subtime) -> 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 + PartialOrd,

Restrict a value to a certain interval.

impl PartialEq for Subtime

fn eq(&self, other: &Subtime) -> 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 Subtime

fn partial_cmp(&self, other: &Subtime) -> 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 PartialOrder for Subtime

fn less_equal(&self, other: &Self) -> bool

Returns true iff one element is less than or equal to the other.

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

Returns true iff one element is strictly less than the other.

impl PathSummary<Subtime> for Subtime

fn results_in(&self, src: &Subtime) -> Option<Subtime>

Advances a timestamp according to the timestamp actions on the path.

fn followed_by(&self, other: &Self) -> Option<Self>

Composes this path summary with another path summary.

impl Serialize for Subtime

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Timestamp for Subtime

type Summary = Subtime

A type summarizing action on a timestamp along a dataflow path.

fn minimum() -> Self

A minimum value suitable as a default.

impl Copy for Subtime

impl Eq for Subtime

impl StructuralPartialEq for Subtime

impl TotalOrder for Subtime