vortex_sequence

Function sequence_encode

Source 
pub fn sequence_encode(
    primitive_array: &PrimitiveArray,
) -> VortexResult<Option<ArrayRef>>
Expand description

Encodes a primitive array into a sequence array, this is possible if:

  1. The array is not empty, and contains no nulls
  2. The array is not a float array. (This is due to precision issues, how it will stack well with ALP).
  3. The array is representable as a sequence A[i] = base + i * multiplier for multiplier != 0.
  4. The sequence has no deviations from the equation, this could be fixed with patches. However, we might want a different array for that since sequence provide fast access.