Enum VariableEvaluationMode 

#[repr(i32)]
pub enum VariableEvaluationMode {
    Unspecified = 0,
    PerPlan = 1,
    PerRecord = 2,
}

VariableEvaluationMode specifies the frequency and scope of execution context variable evaluation.

Variants

Unspecified = 0

PerPlan = 1

Variables are evaluated once per Substrait plan execution.

PerRecord = 2

Variables are evaluated once per record during execution.

Implementations

impl VariableEvaluationMode

pub const fn is_valid(value: i32) -> bool

Returns true if value is a variant of VariableEvaluationMode.

pub fn from_i32(value: i32) -> Option<VariableEvaluationMode>

👎Deprecated:

Use the TryFrom<i32> implementation instead

Converts an i32 to a VariableEvaluationMode, or None if value is not a valid variant.

impl VariableEvaluationMode

pub fn as_str_name(&self) -> &'static str

String value of the enum field names used in the ProtoBuf definition.

The values are not transformed in any way and thus are considered stable (if the ProtoBuf definition does not change) and safe for programmatic use.

pub fn from_str_name(value: &str) -> Option<VariableEvaluationMode>

Creates an enum from field names used in the ProtoBuf definition.

Trait Implementations

impl Clone for VariableEvaluationMode

fn clone(&self) -> VariableEvaluationMode

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for VariableEvaluationMode

impl Debug for VariableEvaluationMode

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

Formats the value using the given formatter.

impl Default for VariableEvaluationMode

fn default() -> VariableEvaluationMode

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for VariableEvaluationMode

fn deserialize<D>( deserializer: D, ) -> Result<VariableEvaluationMode, <D as Deserializer<'de>>::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for VariableEvaluationMode

impl Hash for VariableEvaluationMode

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 Ord for VariableEvaluationMode

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

Restrict a value to a certain interval.

impl PartialEq for VariableEvaluationMode

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for VariableEvaluationMode

fn partial_cmp(&self, other: &VariableEvaluationMode) -> 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 Serialize for VariableEvaluationMode

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 StructuralPartialEq for VariableEvaluationMode

impl TryFrom<i32> for VariableEvaluationMode

type Error = UnknownEnumValue

The type returned in the event of a conversion error.

fn try_from(value: i32) -> Result<VariableEvaluationMode, UnknownEnumValue>

Performs the conversion.