Enum brane_ast::MergeStrategy

pub enum MergeStrategy {
    First,
    FirstBlocking,
    Last,
    Sum,
    Product,
    Max,
    Min,
    All,
    None,
}

Defines merge strategies for the parallel statements.

Variants

First

Take the value that arrived first. The statement will already return as soon as this statement is in, not the rest.

FirstBlocking

Take the value that arrived first. The statement will still block until all values returned.

Last

Take the value that arrived last.

Sum

Add all the resulting values together. This means that they must all be numeric.

Product

Multiple all the resulting values together. This means that they must all be numeric.

Max

Take the largest value. Use on booleans to get an ‘OR’-effect (i.e., it returns true iff there is at least one true).

Min

Take the smallest value. Use on booleans to get an ‘AND’-effect (i.e., it returns false iff there is at least one false).

All

Returns all values as an Array.

None

No merge strategy needed

Trait Implementations

impl Clone for MergeStrategy

fn clone(&self) -> MergeStrategy

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for MergeStrategy

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for MergeStrategy

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl From<&String> for MergeStrategy

fn from(value: &String) -> MergeStrategy

Converts to this type from the input type.

impl From<&str> for MergeStrategy

fn from(value: &str) -> MergeStrategy

Converts to this type from the input type.

impl From<String> for MergeStrategy

fn from(value: String) -> MergeStrategy

Converts to this type from the input type.

impl Hash for MergeStrategy

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

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 PartialEq for MergeStrategy

fn eq(&self, other: &MergeStrategy) -> 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 Serialize for MergeStrategy

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for MergeStrategy

impl Eq for MergeStrategy

impl StructuralPartialEq for MergeStrategy