1 # Copyright (C) 2021-2022 Wind River Systems, Inc.
3 # Licensed under the Apache License, Version 2.0 (the "License");
4 # you may not use this file except in compliance with the License.
5 # You may obtain a copy of the License at
7 # http://www.apache.org/licenses/LICENSE-2.0
9 # Unless required by applicable law or agreed to in writing, software
10 # distributed under the License is distributed on an "AS IS" BASIS,
11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 # See the License for the specific language governing permissions and
13 # limitations under the License.
15 from sqlalchemy.sql.elements import ColumnElement
16 from sqlalchemy import or_
18 from o2common.helper import o2logging
19 logger = o2logging.get_logger(__name__)
22 def gen_orm_filter(obj: ColumnElement, filter_str: str):
25 # filter_without_space = filter_str.replace(" ", "")
26 filter_without_space = filter_str.strip(' ()')
27 items = filter_without_space.split(';')
32 # i = i.replace("(", "")
34 # i = i.replace(")", "")
35 filter_expr = i.split(',')
36 if len(filter_expr) < 3:
38 filter_op = filter_expr[0].strip()
39 filter_key = filter_expr[1].strip()
40 filter_vals = filter_expr[2:]
41 filter_list.extend(toFilterArgs(
42 filter_op, obj, filter_key, filter_vals))
43 logger.debug('Filter list length: %d' % len(filter_list))
47 def toFilterArgs(operation: str, obj: ColumnElement, key: str, values: list):
48 # if not hasattr(obj, key):
49 # logger.warning('Filter attrName %s not in Object %s' %
52 # 'Filter attrName {} not in the Object'.format(key))
54 # if operation in ['eq', 'neq', 'gt', 'lt', 'gte', 'lte']:
55 # if len(values) != 1:
57 # 'Filter operation one {} is only support one value'.
59 # elif operation in ['in', 'nin', 'cont', 'ncont']:
60 # if len(values) == 0:
61 # raise KeyError('Filter operation {} value is needed'.
64 # raise KeyError('Filter operation {} not support'.format(operation))
69 if val.lower() == 'null':
71 ll.append(getattr(obj, key) == val)
72 elif operation == 'neq':
74 if val.lower() == 'null':
76 ll.append(getattr(obj, key) != val)
77 elif operation == 'gt':
79 ll.append(getattr(obj, key) > val)
80 elif operation == 'lt':
82 ll.append(getattr(obj, key) < val)
83 elif operation == 'gte':
85 ll.append(getattr(obj, key) >= val)
86 elif operation == 'lte':
88 ll.append(getattr(obj, key) <= val)
89 elif operation == 'in':
90 ll.append(getattr(obj, key).in_(values))
91 elif operation == 'nin':
92 ll.append(~getattr(obj, key).in_(values))
93 elif operation == 'cont':
96 val_list.append(getattr(obj, key).contains(val))
97 ll.append(or_(*val_list))
98 elif operation == 'ncont':
101 val_list.append(getattr(obj, key).contains(val))
102 ll.append(~or_(*val_list))