def alter_keyspace(self, keyspace, replication_factor=None,
replication_strategy=None,
strategy_options=None):
"""
Alters an existing keyspace.
.. warning:: Don't use this unless you know what you are doing.
Parameters are the same as for :meth:`create_keyspace()`.
"""
old_ksdef = self._conn.describe_keyspace(keyspace)
ksdef = KsDef(name=old_ksdef.name,
strategy_class=old_ksdef.strategy_class,
strategy_options=old_ksdef.strategy_options,
replication_factor=old_ksdef.replication_factor,
cf_defs=[])
if replication_strategy is not None:
if replication_strategy.find('.') == -1:
ksdef.strategy_class = 'org.apache.cassandra.locator.%s' % replication_strategy
else:
ksdef.strategy_class = replication_strategy
if strategy_options is not None:
ksdef.strategy_options = strategy_options
if replication_factor is not None:
ksdef.replication_factor = replication_factor
if self._conn.version == CASSANDRA_08:
ksdef = ksdef.to08()
else:
ksdef = ksdef.to07()
self._system_update_keyspace(ksdef)
def alter_keyspace(self, keyspace, replication_factor=None,
replication_strategy=None,
strategy_options=None):
"""
Alters an existing keyspace.
.. warning:: Don't use this unless you know what you are doing.
Parameters are the same as for :meth:`create_keyspace()`.
"""
old_ksdef = self._conn.describe_keyspace(keyspace)
ksdef = KsDef(name=old_ksdef.name,
strategy_class=old_ksdef.strategy_class,
strategy_options=old_ksdef.strategy_options,
replication_factor=old_ksdef.replication_factor,
cf_defs=[])
if replication_strategy is not None:
if replication_strategy.find('.') == -1:
ksdef.strategy_class = 'org.apache.cassandra.locator.%s' % replication_strategy
else:
ksdef.strategy_class = replication_strategy
if strategy_options is not None:
ksdef.strategy_options = strategy_options
if replication_factor is not None:
ksdef.replication_factor = replication_factor
if self._conn.version == CASSANDRA_08:
ksdef = ksdef.to08()
else:
ksdef = ksdef.to07()
self._system_update_keyspace(ksdef)
