Enum BoxedExpression 

pub enum BoxedExpression {
    Sync(Arc<dyn SyncExpression>),
    Async(Arc<dyn AsyncDynExpression>),
}

An owned dynamically typed expression.

Variants

Sync(Arc<dyn SyncExpression>)

Async(Arc<dyn AsyncDynExpression>)

Implementations

impl BoxedExpression

pub fn return_type(&self) -> DataType

Get the return data type.

pub fn input_ref_index(&self) -> Option<usize>

Get the index if the expression is an InputRef.

pub fn eval_const(&self) -> Result<Datum>

Evaluate if the expression is constant.

pub async fn eval(&self, input: &DataChunk) -> Result<ArrayRef>

Evaluate the expression in vectorized execution. Returns an array.

pub async fn eval_v2(&self, input: &DataChunk) -> Result<ValueImpl>

Evaluate the expression in vectorized execution. Returns a value that can be either an array, or a scalar if all values in the array are the same.

pub async fn eval_row(&self, input: &OwnedRow) -> Result<Datum>

Evaluate the expression in row-based execution. Returns a nullable scalar.

Trait Implementations

impl AsyncExpression for BoxedExpression

async fn eval(&self, input: &DataChunk) -> Result<ArrayRef>

Evaluate the expression in vectorized execution. Returns an array.

async fn eval_v2(&self, input: &DataChunk) -> Result<ValueImpl>

Evaluate the expression in vectorized execution. Returns a value that can be either an array, or a scalar if all values in the array are the same.

async fn eval_row(&self, input: &OwnedRow) -> Result<Datum>

Evaluate the expression in row-based execution. Returns a nullable scalar.

impl Clone for BoxedExpression

fn clone(&self) -> BoxedExpression

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BoxedExpression

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

Formats the value using the given formatter.

impl ExpressionInfo for BoxedExpression

fn return_type(&self) -> DataType

Get the return data type.

fn input_ref_index(&self) -> Option<usize>

Get the index if the expression is an InputRef.

impl<E> From<E> for BoxedExpression

where E: SyncExpression + 'static,

fn from(expr: E) -> Self

Converts to this type from the input type.