def deleteColumn(clasz, key, name):
'''Delete the property specified by @key'''
assert key.iscomplete(), "Your key must be complete before you can do writes"
pool = poolFor(key.namespace)
timestamp = time.time()
path = ColumnPath(column_family=key.kind, column=name)
with using(pool) as conn:
keyspace = keyspaceFor(key.namespace)
conn.client.set_keyspace(keyspace)
cosc = conn.client.remove(key.id, path, timestamp, clasz.consistency)
def readColumn(clasz, key, name):
'''Read a particular property to the column specified via @key'''
assert key.iscomplete(), "Your key must be complete, before you can do reads"
pool = poolFor(key.namespace)
path = ColumnPath(column_family=key.kind, column=name)
cosc = None
with using(pool) as conn:
keyspace = keyspaceFor(key.namespace)
conn.client.set_keyspace(keyspace)
cosc = conn.client.get(key.id, path, clasz.consistency)
column = cosc.column
return column.value
def saveColumn(clasz, key, name, value, ttl=None):
'''Write a particular property to the column specified via @key'''
assert key.iscomplete(), "Your key must be complete before you can do writes"
pool = poolFor(key.namespace)
timestamp = time.time()
parent = ColumnParent(column_family=key.kind)
column = Column(name=name, value=value, timestamp=timestamp)
if ttl:
column.ttl = ttl
cosc = None
with using(pool) as conn:
keyspace = keyspaceFor(key.namespace)
conn.client.set_keyspace(keyspace)
conn.client.insert(key.id, parent, column, clasz.consistency)
