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.
16 from sqlalchemy.sql.elements import ColumnElement
18 from o2common.views.route_exception import BadRequestException
19 from o2common.domain.filter import gen_orm_filter
21 from o2common.helper import o2logging
22 logger = o2logging.get_logger(__name__)
25 def gen_filter(obj: ColumnElement, filter_str: str):
26 check_filter(obj, filter_str)
28 filter_list = gen_orm_filter(obj, filter_str)
30 raise BadRequestException(e.args[0])
34 # The regular expressions testing example put on here
35 # (neq,testkey,value-1)
36 # (neq,testkey,value-1,value-2)
41 # (gt,hello,1);(ncont,world,val1,val-2)
42 # (eq,wrong,60cba7be-e2cd-3b8c-a7ff-16e0f10573f9)
43 # (eq,description,value key)
44 def check_filter(obj: ColumnElement, filter_str: str):
47 pattern = r'^(\((eq|neq|gt|lt|gte|lte){1},\w+,[\w -]+\)\;?|' +\
48 r'\((in|nin|cont|ncont){1},\w*(,[\w -]*)*\)\;?)+'
49 result = re.match(pattern, filter_str)
50 logger.warning('filter: {} match result is {}'.format(filter_str, result))
52 raise BadRequestException(
53 'filter value formater not correct.')
54 check_filter_attribute(obj, filter_str)
57 def check_filter_attribute(obj: ColumnElement, filter_str: str):
58 filter_without_space = filter_str.replace(" ", "")
59 items = filter_without_space.split(';')
63 i = i.replace("(", "")
65 i = i.replace(")", "")
66 filter_expr = i.split(',')
67 if len(filter_expr) < 3:
68 raise BadRequestException(
69 'Filter {} formater not correct.'.format(i))
71 # filter_op = filter_expr[0]
72 filter_key = filter_expr[1]
73 # filter_vals = filter_expr[2:]
74 if not hasattr(obj, filter_key):
75 raise BadRequestException(
76 'Filter attrName {} not in the Object'.format(filter_key))