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DaftScalarFunction

daft_ext::function

Trait DaftScalarFunction 

Source 
pub trait DaftScalarFunction {
    // Required methods
    fn name(&self) -> &CStr;
    fn return_field(&self, args: &[ArrowSchema]) -> DaftResult<ArrowSchema>;
    fn call(&self, args: Vec<ArrowData>) -> DaftResult<ArrowData>;
}
Expand description

Trait that extension authors implement to define a scalar function.

Required Methods§

Source

fn name(&self) -> &CStr

Source

fn return_field(&self, args: &[ArrowSchema]) -> DaftResult<ArrowSchema>

Source

fn call(&self, args: Vec<ArrowData>) -> DaftResult<ArrowData>

Implementors§