'Extract the data from the resource (default method, can be
overridden in report config)
@param resource: the resource
@param selectors: the field selectors
@returns: list of dicts {colname: value} including
raw data (_row)'

@staticmethod
def extract(resource, selectors, orderby):

    data = resource.select(selectors, limit=None, orderby=orderby, raw_data=True, represent=True)
    return data.rows
