Struct mz_storage_operators::persist_source::Subtime

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pub struct Subtime(/* private fields */);
Expand description

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.)

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impl Subtime

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pub const fn least_summary() -> Self

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

Trait Implementations§

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impl Clone for Subtime

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fn clone(&self) -> Subtime

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for Subtime

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

Formats the value using the given formatter. Read more
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impl Default for Subtime

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fn default() -> Subtime

Returns the “default value” for a type. Read more
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impl<'de> Deserialize<'de> for Subtime

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fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>
where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl Hash for Subtime

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

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl Ord for Subtime

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

This method returns an Ordering between self and other. Read more
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fn max(self, other: Self) -> Self
where Self: Sized,

Compares and returns the maximum of two values. Read more
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fn min(self, other: Self) -> Self
where Self: Sized,

Compares and returns the minimum of two values. Read more
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fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized + PartialOrd,

Restrict a value to a certain interval. Read more
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impl PartialEq for Subtime

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

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialOrd for Subtime

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

This method returns an ordering between self and other values if one exists. Read more
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fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator. Read more
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fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more
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fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator. Read more
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fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl PartialOrder for Subtime

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

Returns true iff one element is less than or equal to the other.
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fn less_than(&self, other: &Rhs) -> bool

Returns true iff one element is strictly less than the other.
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impl PathSummary<Subtime> for Subtime

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

Advances a timestamp according to the timestamp actions on the path. Read more
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fn followed_by(&self, other: &Self) -> Option<Self>

Composes this path summary with another path summary. Read more
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impl Serialize for Subtime

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

Serialize this value into the given Serde serializer. Read more
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impl Timestamp for Subtime

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type Summary = Subtime

A type summarizing action on a timestamp along a dataflow path.
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fn minimum() -> Self

A minimum value suitable as a default.
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impl Copy for Subtime

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impl Eq for Subtime

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impl StructuralPartialEq for Subtime

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impl TotalOrder for Subtime

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fn compare(&self, key: &K) -> Ordering

Compare self to key and return their ordering.
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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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fn equivalent(&self, key: &K) -> bool

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impl<T> PreferredContainer for T
where T: Ord + Clone + 'static,

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type Container = Vec<T>

The preferred container for the type.
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impl<T> ProgressEventTimestamp for T
where T: Data + Debug + Any,

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fn as_any(&self) -> &(dyn Any + 'static)

Upcasts this ProgressEventTimestamp to Any. Read more
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fn type_name(&self) -> &'static str

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impl<P, R> ProtoType<R> for P
where R: RustType<P>,

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impl<T> Refines<T> for T
where T: Timestamp,

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fn to_inner(other: T) -> T

Converts the outer timestamp to an inner timestamp.
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fn to_outer(self) -> T

Converts the inner timestamp to an outer timestamp.
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fn summarize(path: <T as Timestamp>::Summary) -> <T as Timestamp>::Summary

Summarizes an inner path summary as an outer path summary. Read more
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