datafusion_expr::function

Type Alias AccumulatorFactoryFunction

Source
pub type AccumulatorFactoryFunction = Arc<dyn Fn(AccumulatorArgs<'_>) -> Result<Box<dyn Accumulator>, DataFusionError> + Send + Sync>;
Expand description

Factory that returns an accumulator for the given aggregate function.

Aliased Typeยง

struct AccumulatorFactoryFunction { /* private fields */ }