def _make_mutations_insert(self, column_family, columns, timestamp, ttl):
_pack_name = column_family._pack_name
_pack_value = column_family._pack_value
_get_type = column_family._get_data_type_for_col
if column_family.super:
for c, v in columns.iteritems():
cos = ColumnOrSuperColumn()
dtype = _get_type(c)
if dtype == 'CounterColumnType':
subc = [CounterColumn(_pack_name(subname), subvalue)
for subname, subvalue in v.iteritems()]
cos.counter_super_column = CounterSuperColumn(name=_pack_name(c, True),
columns=subc)
else:
subc = [Column(name=_pack_name(subname),
value=_pack_value(subvalue, subname),
timestamp=timestamp, ttl=ttl)
for subname, subvalue in v.iteritems()]
cos.super_column = SuperColumn(name=_pack_name(c, True),
columns=subc)
yield Mutation(column_or_supercolumn=cos)
else:
for c, v in columns.iteritems():
cos = ColumnOrSuperColumn()
dtype = _get_type(c)
if dtype == 'CounterColumnType':
cos.counter_column = CounterColumn(_pack_name(c), v)
else:
cos.column = Column(name=_pack_name(c), value=_pack_value(v, c),
timestamp=timestamp, ttl=ttl)
yield Mutation(column_or_supercolumn=cos)
def add(self,
key,
column,
value=1,
super_column=None,
write_consistency_level=None):
"""
Increment or decrement a counter.
`value` should be an integer, either positive or negative, to be added
to a counter column. By default, `value` is 1.
.. versionadded:: 1.1.0
Available in Cassandra 0.8.0 and later.
"""
packed_key = self._pack_key(key)
cp = self._column_parent(super_column)
column = self._pack_name(column)
self.pool.execute('add',
packed_key,
cp,
CounterColumn(column, value),
write_consistency_level
or self.write_consistency_level,
allow_retries=self._allow_retries)
def add(self,
key,
column,
value=1,
super_column=None,
write_consistency_level=None):
"""
Increment or decrement a counter.
`value` should be an integer, either positive or negative, to be added
to a counter column. By default, `value` is 1.
.. note:: This method is not idempotent. Retrying a failed add may result
in a double count. You should consider using a separate
ConnectionPool with retries disabled for column families
with counters.
.. versionadded:: 1.1.0
Available in Cassandra 0.8.0 and later.
"""
packed_key = self._pack_key(key)
cp = self._column_parent(super_column)
column = self._pack_name(column)
self.pool.execute(
'add', packed_key, cp, CounterColumn(column, value),
write_consistency_level or self.write_consistency_level)
def _make_column(name, value, timestamp, ttl):
return CounterColumn(name, value)
def _make_counter_cosc(name, value, timestamp, ttl):
return ColumnOrSuperColumn(counter_column=CounterColumn(name, value))
