################################################################################

#

#  Rattail -- Retail Software Framework

#  Copyright © 2010-2017 Lance Edgar

#

#  This file is part of Rattail.

        (Try to) Add the given row to the given batch.  This assumes it is a

        *new* row, perhaps along with other assumptions?

        """

        session = orm.object_session(batch)

        with session.no_autoflush:

            batch.data_rows.append(row)

        if not row.removed:

            batch.rowcount += 1

    @property

    def root_datadir(self):

        """

        Generally speaking this refresh is meant to use queries etc. to obtain

        "fresh" data for the batch (header) and all its rows.  In most cases

        certain data is expected to be "core" to the batch and/or rows, and

        such data will be left intact, with all *other* data values being

        re-calculated and/or reset etc.

        """

        self.setup_refresh(batch, progress=progress)

        batch.rowcount = 0

        def refresh(row, i):

            if not row.removed:

                batch.rowcount += 1

        success = self.progress_loop(refresh, batch.active_rows(), progress,

                                     message="Refreshing batch data rows")

        self.refresh_batch_status(batch)

        parser.vendor = api.get_vendor(session, parser.vendor_key)

        assert batch.vendor is parser.vendor

        batch.invoice_date = parser.parse_invoice_date(path)

        self.setup_populate(batch, progress=progress)

        def append(row, i):

            if i % 250 == 0:

                session.flush()

        data = list(parser.parse_rows(path))

        assert self.progress_loop(append, data, progress,

                                  message="Adding initial rows to batch")