pub struct Partitioned<P, T>(/* private fields */);
Expand description

A partially ordered timestamp that is partitioned by an arbitrary number of partitions identified by P. The construction allows for efficient representation of frontiers with Antichains.

A Partitioned<P, T> timestamp is internally the product order of an Interval<P> and a bare timestamp T. An Interval<P> represents an inclusive range of values from the type P and its partial order corresponds to the subset order.

Effectively, the minimum Partitioned timestamp will start out with the maximum possible Interval<P> on one side and the minimum timestamp T on the other side. Users of this timestamp can selectively downgrade the timestamp by advancing T, shrinking the interval, or both.

Antichains of this type are efficient in storage. In the worst case, where all chosen partitions have gaps between them, the produced antichain has twice as many elements as partitions. This is because the “dead space” between the selected partitions must have a representative timestamp in order for that space to be useable in the future.

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impl<P: Clone + PartialOrd, T> Partitioned<P, T>

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pub fn new_singleton(partition: P, timestamp: T) -> Self

Constructs a new timestamp for a specific partition.

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pub fn new_range(lower: P, upper: P, timestamp: T) -> Self

Constructs a new timestamp for a partition range.

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pub fn interval(&self) -> &Interval<P>

Returns the interval component of this partitioned timestamp.

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pub fn timestamp(&self) -> &T

Returns the timestamp component of this partitioned timestamp.

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pub fn timestamp_mut(&mut self) -> &mut T

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impl<P: Clone + PartialOrd + Step, T: Clone> Partitioned<P, T>

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pub fn split(&self, point: &P) -> (Option<Self>, Option<Self>)

Returns up to two partitions that contain the interval before and/or after given partition point, neither of which contain the point.

Trait Implementations§

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impl<P: Clone, T: Clone> Clone for Partitioned<P, T>

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fn clone(&self) -> Partitioned<P, T>

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<P: Debug, T: Debug> Debug for Partitioned<P, T>

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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<'de, P, T> Deserialize<'de> for Partitioned<P, T>
where P: Deserialize<'de>, T: Deserialize<'de>,

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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<P: Display, T: Display> Display for Partitioned<P, T>

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

Formats the value using the given formatter. Read more
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impl<P: Hash, T: Hash> Hash for Partitioned<P, T>

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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<P: Ord, T: Ord> Ord for Partitioned<P, T>

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fn cmp(&self, other: &Partitioned<P, T>) -> 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<P: PartialEq, T: PartialEq> PartialEq for Partitioned<P, T>

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fn eq(&self, other: &Partitioned<P, T>) -> 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<P: PartialOrd, T: PartialOrd> PartialOrd for Partitioned<P, T>

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fn partial_cmp(&self, other: &Partitioned<P, T>) -> 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<P: Ord + Eq, T: PartialOrder> PartialOrder for Partitioned<P, T>

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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: &Self) -> bool

Returns true iff one element is strictly less than the other.
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impl<P: Clone, T: Timestamp> PathSummary<Partitioned<P, T>> for ()

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fn results_in(&self, src: &Partitioned<P, T>) -> Option<Partitioned<P, T>>

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<P, T: Timestamp> Refines<()> for Partitioned<P, T>
where P: Extrema + Clone + Debug + Data + Hash + Ord,

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fn to_inner(_other: ()) -> Self

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

Converts the inner timestamp to an outer timestamp.
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fn summarize(_path: Self::Summary)

Summarizes an inner path summary as an outer path summary. Read more
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impl<P, T> Serialize for Partitioned<P, T>
where P: Serialize, T: Serialize,

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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<P, T: Timestamp> Timestamp for Partitioned<P, T>
where P: Extrema + Clone + Debug + Data + Hash + Ord,

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type Summary = ()

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<P: Eq, T: Eq> Eq for Partitioned<P, T>

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impl<P, T> StructuralEq for Partitioned<P, T>

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impl<P, T> StructuralPartialEq for Partitioned<P, T>

Auto Trait Implementations§

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impl<P, T> RefUnwindSafe for Partitioned<P, T>

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impl<P, T> Send for Partitioned<P, T>
where P: Send, T: Send,

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impl<P, T> Sync for Partitioned<P, T>
where P: Sync, T: Sync,

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impl<P, T> Unpin for Partitioned<P, T>
where P: Unpin, T: Unpin,

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impl<P, T> UnwindSafe for Partitioned<P, T>
where P: UnwindSafe, T: UnwindSafe,

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T, U> CastInto<U> for T
where U: CastFrom<T>,

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fn cast_into(self) -> U

Performs the cast.
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impl<Q, K> Comparable<K> for Q
where Q: Ord + ?Sized, K: Borrow<Q> + ?Sized,

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

Compare self to key and return their ordering.
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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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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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> FromRef<T> for T
where T: Clone,

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fn from_ref(input: &T) -> T

Converts to this type from a reference to the input type.
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impl<T> FutureExt for T

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fn with_context(self, otel_cx: Context) -> WithContext<Self>

Attaches the provided Context to this type, returning a WithContext wrapper. Read more
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fn with_current_context(self) -> WithContext<Self>

Attaches the current Context to this type, returning a WithContext wrapper. Read more
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impl<T> Hashable for T
where T: Hash,

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type Output = u64

The type of the output value.
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fn hashed(&self) -> u64

A well-distributed integer derived from the data.
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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoRequest<T> for T

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fn into_request(self) -> Request<T>

Wrap the input message T in a tonic::Request
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impl<T> Pointable for T

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const ALIGN: usize = _

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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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

Returns the name of the concrete type of this object. Read more
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impl<T> PushInto<Vec<T>> for T

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fn push_into(self, target: &mut Vec<T>)

Push self into the target container.
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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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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> ToString for T
where T: Display + ?Sized,

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default fn to_string(&self) -> String

Converts the given value to a String. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
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impl<T> Data for T
where T: Clone + 'static,

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impl<T> Data for T
where T: Send + Sync + Any + Serialize + for<'a> Deserialize<'a> + 'static,

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impl<T> Data for T
where T: Data + Ord + Debug,

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impl<T> DeserializeOwned for T
where T: for<'de> Deserialize<'de>,

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impl<T> ExchangeData for T
where T: Data + Data,

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impl<T> ExchangeData for T
where T: ExchangeData + Ord + Debug,

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impl<T> Sequence for T
where T: Eq + Hash,