Enum declarative_dataflow::InputSemantics

pub enum InputSemantics {
    Raw,
    CardinalityOne,
    CardinalityMany,
}

Attribute indices can have various operations applied to them, based on their semantics.

Variants

Raw

No special semantics enforced. Source is responsible for everything.

CardinalityOne

Only a single value per eid is allowed at any given timestamp.

CardinalityMany

Multiple different values for any given eid are allowed, but (e,v) pairs are enforced to be distinct.

Trait Implementations

impl PartialOrd<InputSemantics> for InputSemantics

fn partial_cmp(&self, other: &InputSemantics) -> 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 PartialEq<InputSemantics> for InputSemantics

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

fn clone(&self) -> InputSemantics

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Ord for InputSemantics

fn cmp(&self, other: &InputSemantics) -> 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)

Returns max if self is greater than max, and min if self is less than min. Otherwise this will return self. Panics if min > max.

impl Eq for InputSemantics

impl Debug for InputSemantics

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

Formats the value using the given formatter.

impl Hash for InputSemantics

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 InputSemantics

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 InputSemantics

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

Deserialize this value from the given Serde deserializer.