Enum mz_compute_client::plan::threshold::ThresholdPlan

pub enum ThresholdPlan {
    Basic(BasicThresholdPlan),
    Retractions(RetractionsThresholdPlan),
}

A plan describing how to compute a threshold operation.

Variants

Basic(BasicThresholdPlan)

Basic threshold maintains all positive inputs.

Retractions(RetractionsThresholdPlan)

Retractions threshold maintains all negative inputs.

Implementations

impl ThresholdPlan

pub fn keys(&self) -> AvailableCollections

Reports all keys of produced arrangements.

This is likely either an empty vector, for no arrangement, or a singleton vector containing the list of expressions that key a single arrangement.

impl ThresholdPlan

pub fn create_from(
    arity: usize,
    maintain_retractions: bool
) -> (Self, (Vec<MirScalarExpr>, BTreeMap<usize, usize>, Vec<usize>))

Construct the plan from the number of columns (arity). maintain_retractions allows to switch between an implementation that maintains rows with negative counts (true), or rows with positive counts (false).

Also returns the arrangement and thinning required for the input.

Trait Implementations

impl Arbitrary for ThresholdPlan

type Parameters = (<BasicThresholdPlan as Arbitrary>::Parameters, <RetractionsThresholdPlan as Arbitrary>::Parameters)

The type of parameters that arbitrary_with accepts for configuration of the generated Strategy. Parameters must implement Default.

type Strategy = Union<BoxedStrategy<ThresholdPlan>>

The type of Strategy used to generate values of type Self.

fn arbitrary_with(_top: Self::Parameters) -> Self::Strategy

Generates a Strategy for producing arbitrary values of type the implementing type (Self). The strategy is passed the arguments given in args.

fn arbitrary() -> Self::Strategy

Generates a Strategy for producing arbitrary values of type the implementing type (Self).

impl Clone for ThresholdPlan

fn clone(&self) -> ThresholdPlan

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ThresholdPlan

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ThresholdPlan

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

Deserialize this value from the given Serde deserializer.

impl PartialEq<ThresholdPlan> for ThresholdPlan

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

This method tests for self and other values to be equal, and is used by ==.

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.

impl RustType<ProtoThresholdPlan> for ThresholdPlan

fn into_proto(&self) -> ProtoThresholdPlan

Convert a Self into a Proto value.

fn from_proto(proto: ProtoThresholdPlan) -> Result<Self, TryFromProtoError>

Consume and convert a Proto back into a Self value.

impl Serialize for ThresholdPlan

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

Serialize this value into the given Serde serializer.

impl Eq for ThresholdPlan

impl StructuralEq for ThresholdPlan

impl StructuralPartialEq for ThresholdPlan