Trait FilterKernel

Source

pub trait FilterKernel: VTable {
    // Required method
    fn filter(
        &self,
        array: &Self::Array,
        selection_mask: &Mask,
    ) -> VortexResult<ArrayRef>;
}

Required Methods§

Source

fn filter( &self, array: &Self::Array, selection_mask: &Mask, ) -> VortexResult<ArrayRef>

Filter an array by the provided predicate.

§Preconditions

The entrypoint filter functions will handle Mask::AllTrue and Mask::AllFalse on the selection mask, leaving only Mask::Values to be handled by this function.

Additionally, the array length is guaranteed to have the same length as the selection mask.

Finally, the array validity mask is guaranteed not to have a true count of 0 (all nulls).