/usr/lib/python3/dist-packages/sqlalchemy/testing/entities.py is in python3-sqlalchemy 1.0.15+ds1-1.
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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 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 | # testing/entities.py
# Copyright (C) 2005-2016 the SQLAlchemy authors and contributors
# <see AUTHORS file>
#
# This module is part of SQLAlchemy and is released under
# the MIT License: http://www.opensource.org/licenses/mit-license.php
import sqlalchemy as sa
from sqlalchemy import exc as sa_exc
_repr_stack = set()
class BasicEntity(object):
def __init__(self, **kw):
for key, value in kw.items():
setattr(self, key, value)
def __repr__(self):
if id(self) in _repr_stack:
return object.__repr__(self)
_repr_stack.add(id(self))
try:
return "%s(%s)" % (
(self.__class__.__name__),
', '.join(["%s=%r" % (key, getattr(self, key))
for key in sorted(self.__dict__.keys())
if not key.startswith('_')]))
finally:
_repr_stack.remove(id(self))
_recursion_stack = set()
class ComparableEntity(BasicEntity):
def __hash__(self):
return hash(self.__class__)
def __ne__(self, other):
return not self.__eq__(other)
def __eq__(self, other):
"""'Deep, sparse compare.
Deeply compare two entities, following the non-None attributes of the
non-persisted object, if possible.
"""
if other is self:
return True
elif not self.__class__ == other.__class__:
return False
if id(self) in _recursion_stack:
return True
_recursion_stack.add(id(self))
try:
# pick the entity that's not SA persisted as the source
try:
self_key = sa.orm.attributes.instance_state(self).key
except sa.orm.exc.NO_STATE:
self_key = None
if other is None:
a = self
b = other
elif self_key is not None:
a = other
b = self
else:
a = self
b = other
for attr in list(a.__dict__):
if attr.startswith('_'):
continue
value = getattr(a, attr)
try:
# handle lazy loader errors
battr = getattr(b, attr)
except (AttributeError, sa_exc.UnboundExecutionError):
return False
if hasattr(value, '__iter__'):
if hasattr(value, '__getitem__') and not hasattr(
value, 'keys'):
if list(value) != list(battr):
return False
else:
if set(value) != set(battr):
return False
else:
if value is not None and value != battr:
return False
return True
finally:
_recursion_stack.remove(id(self))
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