Struct spark_connect_rs::spark::expression::SortOrder

pub struct SortOrder {
    pub child: Option<Box<Expression>>,
    pub direction: i32,
    pub null_ordering: i32,
}

SortOrder is used to specify the data ordering, it is normally used in Sort and Window. It is an unevaluable expression and cannot be evaluated, so can not be used in Projection.

Fields

child: Option<Box<Expression>>

(Required) The expression to be sorted.

direction: i32

(Required) The sort direction, should be ASCENDING or DESCENDING.

null_ordering: i32

(Required) How to deal with NULLs, should be NULLS_FIRST or NULLS_LAST.

Implementations

impl SortOrder

pub fn direction(&self) -> SortDirection

Returns the enum value of direction, or the default if the field is set to an invalid enum value.

pub fn set_direction(&mut self, value: SortDirection)

Sets direction to the provided enum value.

pub fn null_ordering(&self) -> NullOrdering

Returns the enum value of null_ordering, or the default if the field is set to an invalid enum value.

pub fn set_null_ordering(&mut self, value: NullOrdering)

Sets null_ordering to the provided enum value.

Trait Implementations

impl Clone for SortOrder

fn clone(&self) -> SortOrder

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for SortOrder

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

Formats the value using the given formatter.

impl Default for SortOrder

fn default() -> SortOrder

Returns the “default value” for a type.

impl Message for SortOrder

fn encoded_len(&self) -> usize

Returns the encoded length of the message without a length delimiter.

fn clear(&mut self)

Clears the message, resetting all fields to their default.

fn encode<B>(&self, buf: &mut B) -> Result<(), EncodeError>

where B: BufMut, Self: Sized,

Encodes the message to a buffer.

fn encode_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message to a newly allocated buffer.

fn encode_length_delimited<B>(&self, buf: &mut B) -> Result<(), EncodeError>

where B: BufMut, Self: Sized,

Encodes the message with a length-delimiter to a buffer.

fn encode_length_delimited_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message with a length-delimiter to a newly allocated buffer.

fn decode<B>(buf: B) -> Result<Self, DecodeError>

where B: Buf, Self: Default,

Decodes an instance of the message from a buffer.

fn decode_length_delimited<B>(buf: B) -> Result<Self, DecodeError>

where B: Buf, Self: Default,

Decodes a length-delimited instance of the message from the buffer.

fn merge<B>(&mut self, buf: B) -> Result<(), DecodeError>

where B: Buf, Self: Sized,

Decodes an instance of the message from a buffer, and merges it into self.

fn merge_length_delimited<B>(&mut self, buf: B) -> Result<(), DecodeError>

where B: Buf, Self: Sized,

Decodes a length-delimited instance of the message from buffer, and merges it into self.

impl PartialEq for SortOrder

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

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

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

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

impl StructuralPartialEq for SortOrder