Struct proof_of_sql::sql::transform::CompositionExpr

pub struct CompositionExpr { /* private fields */ }

A node representing a list of transformations to be applied to a LazyFrame.

Implementations

impl CompositionExpr

pub fn new(transformation: Box<dyn RecordBatchExpr>) -> Self

Create a new CompositionExpr node.

pub fn is_empty(&self) -> bool

Verify if the CompositionExpr node is empty.

pub fn add(&mut self, transformation: Box<dyn RecordBatchExpr>)

Append a new transformation to the end of the current CompositionExpr node.

Trait Implementations

impl Debug for CompositionExpr

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

Formats the value using the given formatter.

impl Default for CompositionExpr

fn default() -> CompositionExpr

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for CompositionExpr

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl DynPartialEq for CompositionExpr

fn as_any(&self) -> &dyn Any

fn box_eq(&self, other: &dyn Any) -> bool

impl PartialEq for CompositionExpr

fn eq(&self, other: &CompositionExpr) -> 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 RecordBatchExpr for CompositionExpr

fn apply_transformation(&self, record_batch: RecordBatch) -> Option<RecordBatch>

Apply the transformations to the RecordBatch.

impl Serialize for CompositionExpr

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for CompositionExpr