124 lines
3.1 KiB
Python
124 lines
3.1 KiB
Python
import logging
|
|
log = logging.getLogger(__name__)
|
|
|
|
from binascii import hexlify
|
|
import calendar
|
|
import datetime
|
|
import sys
|
|
import types
|
|
from uuid import UUID
|
|
import six
|
|
|
|
from cassandra.util import OrderedDict
|
|
|
|
if six.PY3:
|
|
long = int
|
|
|
|
|
|
def cql_quote(term):
|
|
# The ordering of this method is important for the result of this method to
|
|
# be a native str type (for both Python 2 and 3)
|
|
|
|
# Handle quoting of native str and bool types
|
|
if isinstance(term, (str, bool)):
|
|
return "'%s'" % str(term).replace("'", "''")
|
|
# This branch of the if statement will only be used by Python 2 to catch
|
|
# unicode strings, text_type is used to prevent type errors with Python 3.
|
|
elif isinstance(term, six.text_type):
|
|
return "'%s'" % term.encode('utf8').replace("'", "''")
|
|
else:
|
|
return str(term)
|
|
|
|
|
|
def cql_encode_none(val):
|
|
return 'NULL'
|
|
|
|
|
|
def cql_encode_unicode(val):
|
|
return cql_quote(val.encode('utf-8'))
|
|
|
|
|
|
def cql_encode_str(val):
|
|
return cql_quote(val)
|
|
|
|
|
|
if six.PY3:
|
|
def cql_encode_bytes(val):
|
|
return (b'0x' + hexlify(val)).decode('utf-8')
|
|
elif sys.version_info >= (2, 7):
|
|
def cql_encode_bytes(val): # noqa
|
|
return b'0x' + hexlify(val)
|
|
else:
|
|
# python 2.6 requires string or read-only buffer for hexlify
|
|
def cql_encode_bytes(val): # noqa
|
|
return b'0x' + hexlify(buffer(val))
|
|
|
|
|
|
def cql_encode_object(val):
|
|
return str(val)
|
|
|
|
|
|
def cql_encode_datetime(val):
|
|
timestamp = calendar.timegm(val.utctimetuple())
|
|
return str(long(timestamp * 1e3 + getattr(val, 'microsecond', 0) / 1e3))
|
|
|
|
|
|
def cql_encode_date(val):
|
|
return "'%s'" % val.strftime('%Y-%m-%d-0000')
|
|
|
|
|
|
def cql_encode_sequence(val):
|
|
return '( %s )' % ' , '.join(cql_encoders.get(type(v), cql_encode_object)(v)
|
|
for v in val)
|
|
|
|
|
|
def cql_encode_map_collection(val):
|
|
return '{ %s }' % ' , '.join('%s : %s' % (
|
|
cql_encode_all_types(k),
|
|
cql_encode_all_types(v)
|
|
) for k, v in six.iteritems(val))
|
|
|
|
|
|
def cql_encode_list_collection(val):
|
|
return '[ %s ]' % ' , '.join(map(cql_encode_all_types, val))
|
|
|
|
|
|
def cql_encode_set_collection(val):
|
|
return '{ %s }' % ' , '.join(map(cql_encode_all_types, val))
|
|
|
|
|
|
def cql_encode_all_types(val):
|
|
return cql_encoders.get(type(val), cql_encode_object)(val)
|
|
|
|
|
|
cql_encoders = {
|
|
float: cql_encode_object,
|
|
bytearray: cql_encode_bytes,
|
|
str: cql_encode_str,
|
|
int: cql_encode_object,
|
|
UUID: cql_encode_object,
|
|
datetime.datetime: cql_encode_datetime,
|
|
datetime.date: cql_encode_date,
|
|
dict: cql_encode_map_collection,
|
|
OrderedDict: cql_encode_map_collection,
|
|
list: cql_encode_list_collection,
|
|
tuple: cql_encode_list_collection,
|
|
set: cql_encode_set_collection,
|
|
frozenset: cql_encode_set_collection,
|
|
types.GeneratorType: cql_encode_list_collection
|
|
}
|
|
|
|
if six.PY2:
|
|
cql_encoders.update({
|
|
unicode: cql_encode_unicode,
|
|
buffer: cql_encode_bytes,
|
|
long: cql_encode_object,
|
|
types.NoneType: cql_encode_none,
|
|
})
|
|
else:
|
|
cql_encoders.update({
|
|
memoryview: cql_encode_bytes,
|
|
bytes: cql_encode_bytes,
|
|
type(None): cql_encode_none,
|
|
})
|