Method SeekTo

pkg/parquetquery/iters.go:587–621

SeekTo moves this iterator to the next result that is greater than or equal to the given row number (and based on the given definition level)

(to RowNumber, definitionLevel int)

// SeekTo moves this iterator to the next result that is greater than
// or equal to the given row number (and based on the given definition level)
func (c *SyncIterator) SeekTo(to RowNumber, definitionLevel int) (*IteratorResult, error) {
	for {
		if done := c.seekRowGroup(to, definitionLevel); done {
			return nil, nil
		}

		done, err := c.seekPages(to, definitionLevel)
		if err != nil {
			return nil, err
		}
		if done {
			// This row group is exhausted try the next one.
			continue
		}

		c.seekWithinPage(to, definitionLevel)
		break
	}

	// The row group and page have been selected to where this value is possibly
	// located. Now scan through the page and look for it.
	for {
		rn, v, err := c.next()
		if err != nil {
			return nil, err
		}
		if !rn.Valid() {
			return nil, nil
		}

		if CompareRowNumbers(definitionLevel, rn, to) >= 0 {
			return c.makeResult(rn, v), nil
		}
	}
}

func (c *SyncIterator) popRowGroup() (pq.RowGroup, RowNumber, RowNumber) {
	if len(c.rgs) == 0 {