maxHlc method

@override String maxHlc(String table)

The highest HLC seen in table as a string, or the empty string when the table is empty.

Implementation

@override
String maxHlc(String table) {
  if (_db == null) return '';
  final rows = _open.select(
    'SELECT hlc FROM crdt_records WHERE collection = ? '
    'ORDER BY hlc_key DESC LIMIT 1',
    [table],
  );
  return rows.isEmpty ? '' : rows.first['hlc'] as String;
}