1 # Licensed to the Apache Software Foundation (ASF) under one or more
2 # contributor license agreements. See the NOTICE file distributed with
3 # this work for additional information regarding copyright ownership.
4 # The ASF licenses this file to You under the Apache License, Version 2.0
5 # (the "License"); you may not use this file except in compliance with
6 # the License. You may obtain a copy of the License at
8 # http://www.apache.org/licenses/LICENSE-2.0
10 # Unless required by applicable law or agreed to in writing, software
11 # distributed under the License is distributed on an "AS IS" BASIS,
12 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 # See the License for the specific language governing permissions and
14 # limitations under the License.
16 from ...utils.collections import deepcopy_with_locators
21 Represents an explicit null value provided by the user, which is different from
22 not supplying a value at all.
34 def none_to_null(value):
36 Convert ``None`` to ``NULL``, recursively.
41 if isinstance(value, list):
42 value = deepcopy_with_locators(value)
43 for i, _ in enumerate(value):
44 value[i] = none_to_null(value[i])
45 elif isinstance(value, dict):
46 value = deepcopy_with_locators(value)
47 for k, v in value.iteritems():
48 value[k] = none_to_null(v)
52 def null_to_none(value):
54 Convert ``NULL`` to ``None``, recursively.
59 if isinstance(value, list):
60 value = deepcopy_with_locators(value)
61 for i, _ in enumerate(value):
62 value[i] = none_to_null(value[i])
63 elif isinstance(value, dict):
64 value = deepcopy_with_locators(value)
65 for k, v in value.iteritems():
66 value[k] = none_to_null(v)