Skip to main content

AsyncDynExpression

risingwave_expr::expr

Trait AsyncDynExpression 

Source 
pub trait AsyncDynExpression: ExpressionInfo {
    // Required methods
    fn eval<'life0, 'life1, 'async_trait>(
        &'life0 self,
        input: &'life1 DataChunk,
    ) -> Pin<Box<dyn Future<Output = Result<ArrayRef>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait,
             'life1: 'async_trait;
    fn eval_v2<'life0, 'life1, 'async_trait>(
        &'life0 self,
        input: &'life1 DataChunk,
    ) -> Pin<Box<dyn Future<Output = Result<ValueImpl>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait,
             'life1: 'async_trait;
    fn eval_row<'life0, 'life1, 'async_trait>(
        &'life0 self,
        input: &'life1 OwnedRow,
    ) -> Pin<Box<dyn Future<Output = Result<Datum>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait,
             'life1: 'async_trait;
}
Expand description

Object-safe adapter for asynchronous expressions.

Required Methods§

Source

fn eval<'life0, 'life1, 'async_trait>( &'life0 self, input: &'life1 DataChunk, ) -> Pin<Box<dyn Future<Output = Result<ArrayRef>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Evaluate the expression in vectorized execution. Returns an array.

Source

fn eval_v2<'life0, 'life1, 'async_trait>( &'life0 self, input: &'life1 DataChunk, ) -> Pin<Box<dyn Future<Output = Result<ValueImpl>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

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.

Source

fn eval_row<'life0, 'life1, 'async_trait>( &'life0 self, input: &'life1 OwnedRow, ) -> Pin<Box<dyn Future<Output = Result<Datum>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

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

Dyn Compatibility§

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors§