Enum declarative_dataflow::QuerySupport

pub enum QuerySupport {
    Basic,
    Delta,
    AdaptiveWCO,
}

Attributes might only appear in certain classes of queries. If that is the case, indexing overhead can be reduced.

Variants

Basic

Simple pull queries and star-joins require only a single index.

Delta

Delta queries require an additional index for validation of proposals.

AdaptiveWCO

Adaptive, worst-case optimal queries require three indices per direction, one for proposals, one for validation, and one for per-key statistics.

Trait Implementations

impl PartialEq<QuerySupport> for QuerySupport

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

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

#[must_use] fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl Clone for QuerySupport

fn clone(&self) -> QuerySupport

Returns a copy of the value.

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

Performs copy-assignment from source.

impl PartialOrd<QuerySupport> for QuerySupport

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

This method returns an ordering between self and other values if one exists.

#[must_use] fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

#[must_use] fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

#[must_use] fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

#[must_use] fn ge(&self, other: &Rhs) -> bool

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

impl Eq for QuerySupport

impl Ord for QuerySupport

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

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

🔬 This is a nightly-only experimental API. (clamp)

Restrict a value to a certain interval.

impl Debug for QuerySupport

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

Formats the value using the given formatter.

impl Hash for QuerySupport

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, 

Feeds a slice of this type into the given [Hasher].

impl Serialize for QuerySupport

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

Serialize this value into the given Serde serializer.

impl<'de> Deserialize<'de> for QuerySupport

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

Deserialize this value from the given Serde deserializer.