code: @Override
  	public String getString(int columnIndex) {
  		String value;
  		try {
  			value = resultSet
  					.getString(resultIndexToResultSetIndex(columnIndex));
  		} catch (SQLException e) {
  			throw new GeoPackageException(
  					"Failed to get String value for column index: "
  							+ columnIndex, e);
  		}
  		return value;
  	}
docs: {@inheritDoc}