Struct SetWindowFieldsBuilder 

pub struct SetWindowFieldsBuilder { /* private fields */ }

Builder for $setWindowFields.

Implementations

impl SetWindowFieldsBuilder

pub fn partition_by(self, expr: impl Into<String>) -> Self

Set PARTITION BY.

pub fn partition_by_expr(self, expr: JsonValue) -> Self

Set PARTITION BY with object expression.

pub fn sort_by(self, field: impl Into<String>) -> Self

Set SORT BY (single field ascending).

pub fn sort_by_desc(self, field: impl Into<String>) -> Self

Set SORT BY with direction.

pub fn sort_by_fields(self, fields: Vec<(&str, i32)>) -> Self

Set SORT BY with multiple fields.

pub fn row_number(self, output_field: impl Into<String>) -> Self

Add $rowNumber output field.

pub fn rank(self, output_field: impl Into<String>) -> Self

Add $rank output field.

pub fn dense_rank(self, output_field: impl Into<String>) -> Self

Add $denseRank output field.

pub fn sum( self, output_field: impl Into<String>, input: impl Into<String>, window: Option<MongoWindow>, ) -> Self

Add $sum with window output field.

pub fn avg( self, output_field: impl Into<String>, input: impl Into<String>, window: Option<MongoWindow>, ) -> Self

Add $avg with window output field.

pub fn first( self, output_field: impl Into<String>, input: impl Into<String>, ) -> Self

Add $first output field.

pub fn last( self, output_field: impl Into<String>, input: impl Into<String>, ) -> Self

Add $last output field.

pub fn shift( self, output_field: impl Into<String>, output: impl Into<String>, by: i32, default: Option<JsonValue>, ) -> Self

Add $shift (LAG/LEAD equivalent) output field.

pub fn output(self, field: impl Into<String>, spec: JsonValue) -> Self

Add custom window function.

pub fn build(self) -> SetWindowFields

Build the stage.

Trait Implementations

impl Clone for SetWindowFieldsBuilder

fn clone(&self) -> SetWindowFieldsBuilder

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SetWindowFieldsBuilder

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

Formats the value using the given formatter.

impl Default for SetWindowFieldsBuilder

fn default() -> SetWindowFieldsBuilder

Returns the “default value” for a type.