1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
|
from sqlalchemy import util, exceptions
import types
from sqlalchemy.orm import mapper
def _monkeypatch_session_method(name, ctx, class_):
def do(self, *args, **kwargs):
session = ctx.current
return getattr(session, name)(self, *args, **kwargs)
try:
do.__name__ = name
except:
pass
if not hasattr(class_, name):
setattr(class_, name, do)
def assign_mapper(ctx, class_, *args, **kwargs):
extension = kwargs.pop('extension', None)
if extension is not None:
extension = util.to_list(extension)
extension.append(ctx.mapper_extension)
else:
extension = ctx.mapper_extension
validate = kwargs.pop('validate', False)
if not isinstance(getattr(class_, '__init__'), types.MethodType):
def __init__(self, **kwargs):
for key, value in kwargs.items():
if validate:
if not self.mapper.get_property(key, resolve_synonyms=False, raiseerr=False):
raise exceptions.ArgumentError("Invalid __init__ argument: '%s'" % key)
setattr(self, key, value)
class_.__init__ = __init__
class query(object):
def __getattr__(self, key):
return getattr(ctx.current.query(class_), key)
def __call__(self):
return ctx.current.query(class_)
if not hasattr(class_, 'query'):
class_.query = query()
for name in ['refresh', 'expire', 'delete', 'expunge', 'update']:
_monkeypatch_session_method(name, ctx, class_)
m = mapper(class_, extension=extension, *args, **kwargs)
class_.mapper = m
return m
|
