Method Preceding

pkg/parquetquery/iters.go:158–171

Preceding returns the largest representable row number that is immediately prior to this one. Think of it like math.NextAfter but for segmented row numbers. Examples: RowNumber 1000.0.0 (defined at 3 levels) is preceded by 999.max.max RowNumber 1000.-1.-1 (defined at 1 level) is preceded by

()

//		RowNumber 1000.0.0 (defined at 3 levels) is preceded by 999.max.max
//	    RowNumber 1000.-1.-1 (defined at 1 level) is preceded by 999.-1.-1
func (t RowNumber) Preceding() RowNumber {
	for i := len(t) - 1; i >= 0; i-- {
		switch t[i] {
		case -1:
			continue
		case 0:
			t[i] = math.MaxInt32
		default:
			t[i]--
			return t
		}
	}
	return t
}

// Releaser can be implemented by types stored in OtherEntries. If the entry
// implements Releaser, iterators will call it when discarding unused values when Seeking.