def _make_txn_selector(self): """Helper for :meth:`read`.""" if self._transaction_id is not None: return TransactionSelector(id=self._transaction_id) if self._read_timestamp: key = 'read_timestamp' value = _datetime_to_pb_timestamp(self._read_timestamp) elif self._min_read_timestamp: key = 'min_read_timestamp' value = _datetime_to_pb_timestamp(self._min_read_timestamp) elif self._max_staleness: key = 'max_staleness' value = _timedelta_to_duration_pb(self._max_staleness) elif self._exact_staleness: key = 'exact_staleness' value = _timedelta_to_duration_pb(self._exact_staleness) else: key = 'strong' value = True options = TransactionOptions( read_only=TransactionOptions.ReadOnly(**{key: value})) if self._multi_use: return TransactionSelector(begin=options) else: return TransactionSelector(single_use=options)
def _make_txn_selector(self): from google.cloud.proto.spanner.v1.transaction_pb2 import ( TransactionOptions, TransactionSelector) if self._transaction_id: return TransactionSelector(id=self._transaction_id) options = TransactionOptions( read_only=TransactionOptions.ReadOnly(strong=True)) if self._multi_use: return TransactionSelector(begin=options) return TransactionSelector(single_use=options)
def _make_txn_selector(self): from google.cloud.proto.spanner.v1.transaction_pb2 import ( TransactionOptions, TransactionSelector) options = TransactionOptions( read_only=TransactionOptions.ReadOnly(strong=True)) return TransactionSelector(single_use=options)
def _make_txn_selector(self): """Helper for :meth:`read`. :rtype: :class:`~.transaction_pb2.TransactionSelector` :returns: a selector configured for read-write transaction semantics. """ self._check_state() return TransactionSelector(id=self._id)