749             if rollback:

   749             if rollback:

   750                 try:

   750                 try:

   751                     session.cnxset.connection(self.uri).rollback()

   751                     session.cnxset.connection(self.uri).rollback()

   752                     if self.repo.config.mode != 'test':

   752                     if self.repo.config.mode != 'test':

   753                         self.critical('transaction has been rollbacked')

   753                         self.critical('transaction has been rollbacked')

   755                     pass

   755                     pass

   756             if ex.__class__.__name__ == 'IntegrityError':

   756             if ex.__class__.__name__ == 'IntegrityError':

   757                 # need string comparison because of various backends

   757                 # need string comparison because of various backends

   758                 for arg in ex.args:

   758                 for arg in ex.args:

   759                     mo = re.search('unique_cw_[^ ]+_idx', arg)

   759                     mo = re.search('unique_cw_[^ ]+_idx', arg)

  1625     * the table name

  1625     * the table name

  1626     * a tuple of column names

  1626     * a tuple of column names

  1627     * a list of rows (as tuples with one element per column)

  1627     * a list of rows (as tuples with one element per column)

  1628 

  1628 

  1629     Tables are saved in chunks in different files in order to prevent

  1629     Tables are saved in chunks in different files in order to prevent

  1631     """

  1631     """

  1632     def __init__(self, source):

  1632     def __init__(self, source):

  1633         """

  1633         """

  1634         :param: source an instance of the system source

  1634         :param: source an instance of the system source

  1635         """

  1635         """