Enum mz_adapter::coord::timeline::TimelineContext

pub enum TimelineContext {
    TimelineDependent(Timeline),
    TimestampDependent,
    TimestampIndependent,
}

An enum describing whether or not a query belongs to a timeline and whether the query can be affected by the timestamp at which it executes.

Variants

TimelineDependent(Timeline)

Can only ever belong to a single specific timeline. The answer will depend on a timestamp chosen from that specific timeline.

TimestampDependent

Can belong to any timeline. The answer will depend on a timestamp chosen from some timeline.

TimestampIndependent

The answer does not depend on a chosen timestamp.

Implementations

impl TimelineContext

pub fn contains_timeline(&self) -> bool

Whether or not the context contains a timeline.

pub fn timeline(&self) -> Option<&Timeline>

The timeline belonging to this context, if one exists.

Trait Implementations

impl Clone for TimelineContext

fn clone(&self) -> TimelineContext

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for TimelineContext

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

Formats the value using the given formatter.

impl Hash for TimelineContext

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, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for TimelineContext

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

This method returns an Ordering between self and other.

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

where Self: Sized,

Compares and returns the maximum of two values.

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

where Self: Sized,

Compares and returns the minimum of two values.

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

where Self: Sized + PartialOrd,

Restrict a value to a certain interval.

impl PartialEq for TimelineContext

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

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for TimelineContext

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

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

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

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

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

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

impl Eq for TimelineContext

impl StructuralPartialEq for TimelineContext