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import testbase, tables
import unittest, sys, datetime
from sqlalchemy.ext.sessioncontext import SessionContext
from sqlalchemy import *
class O2MCascadeTest(testbase.AssertMixin):
def tearDown(self):
ctx.current.clear()
tables.delete()
def tearDownAll(self):
clear_mappers()
tables.drop()
def setUpAll(self):
global ctx, data
ctx = SessionContext(lambda: create_session( ))
tables.create()
mapper(tables.User, tables.users, properties = dict(
address = relation(mapper(tables.Address, tables.addresses), lazy = False, uselist = False, private = True),
orders = relation(
mapper(tables.Order, tables.orders, properties = dict (
items = relation(mapper(tables.Item, tables.orderitems), lazy = False, uselist =True, private = True)
)),
lazy = True, uselist = True, private = True)
))
def setUp(self):
global data
data = [tables.User,
{'user_name' : 'ed',
'address' : (tables.Address, {'email_address' : 'foo@bar.com'}),
'orders' : (tables.Order, [
{'description' : 'eds 1st order', 'items' : (tables.Item, [{'item_name' : 'eds o1 item'}, {'item_name' : 'eds other o1 item'}])},
{'description' : 'eds 2nd order', 'items' : (tables.Item, [{'item_name' : 'eds o2 item'}, {'item_name' : 'eds other o2 item'}])}
])
},
{'user_name' : 'jack',
'address' : (tables.Address, {'email_address' : 'jack@jack.com'}),
'orders' : (tables.Order, [
{'description' : 'jacks 1st order', 'items' : (tables.Item, [{'item_name' : 'im a lumberjack'}, {'item_name' : 'and im ok'}])}
])
},
{'user_name' : 'foo',
'address' : (tables.Address, {'email_address': 'hi@lala.com'}),
'orders' : (tables.Order, [
{'description' : 'foo order', 'items' : (tables.Item, [])},
{'description' : 'foo order 2', 'items' : (tables.Item, [{'item_name' : 'hi'}])},
{'description' : 'foo order three', 'items' : (tables.Item, [{'item_name' : 'there'}])}
])
}
]
for elem in data[1:]:
u = tables.User()
ctx.current.save(u)
u.user_name = elem['user_name']
u.address = tables.Address()
u.address.email_address = elem['address'][1]['email_address']
u.orders = []
for order in elem['orders'][1]:
o = tables.Order()
o.isopen = None
o.description = order['description']
u.orders.append(o)
o.items = []
for item in order['items'][1]:
i = tables.Item()
i.item_name = item['item_name']
o.items.append(i)
ctx.current.flush()
ctx.current.clear()
def testdelete(self):
l = ctx.current.query(tables.User).select()
for u in l:
self.echo( repr(u.orders))
self.assert_result(l, data[0], *data[1:])
self.echo("\n\n\n")
ids = (l[0].user_id, l[2].user_id)
ctx.current.delete(l[0])
ctx.current.delete(l[2])
ctx.current.flush()
self.assert_(tables.orders.count(tables.orders.c.user_id.in_(*ids)).scalar() == 0)
self.assert_(tables.orderitems.count(tables.orders.c.user_id.in_(*ids) &(tables.orderitems.c.order_id==tables.orders.c.order_id)).scalar() == 0)
self.assert_(tables.addresses.count(tables.addresses.c.user_id.in_(*ids)).scalar() == 0)
self.assert_(tables.users.count(tables.users.c.user_id.in_(*ids)).scalar() == 0)
def testorphan(self):
l = ctx.current.query(tables.User).select()
jack = l[1]
jack.orders[:] = []
ids = [jack.user_id]
self.assert_(tables.orders.count(tables.orders.c.user_id.in_(*ids)).scalar() == 1)
self.assert_(tables.orderitems.count(tables.orders.c.user_id.in_(*ids) &(tables.orderitems.c.order_id==tables.orders.c.order_id)).scalar() == 2)
ctx.current.flush()
self.assert_(tables.orders.count(tables.orders.c.user_id.in_(*ids)).scalar() == 0)
self.assert_(tables.orderitems.count(tables.orders.c.user_id.in_(*ids) &(tables.orderitems.c.order_id==tables.orders.c.order_id)).scalar() == 0)
class M2OCascadeTest(testbase.AssertMixin):
def tearDown(self):
ctx.current.clear()
for t in metadata.table_iterator(reverse=True):
t.delete().execute()
def tearDownAll(self):
clear_mappers()
metadata.drop_all()
def setUpAll(self):
global ctx, data, metadata, User, Pref
ctx = SessionContext(create_session)
metadata = BoundMetaData(testbase.db)
prefs = Table('prefs', metadata,
Column('prefs_id', Integer, Sequence('prefs_id_seq', optional=True), primary_key=True),
Column('prefs_data', String(40)))
users = Table('users', metadata,
Column('user_id', Integer, Sequence('user_id_seq', optional=True), primary_key = True),
Column('user_name', String(40)),
Column('pref_id', Integer, ForeignKey('prefs.prefs_id'))
)
class User(object):
pass
class Pref(object):
pass
metadata.create_all()
mapper(User, users, properties = dict(
pref = relation(mapper(Pref, prefs), lazy=False, cascade="all, delete-orphan")
))
def setUp(self):
global data
data = [User,
{'user_name' : 'ed',
'pref' : (Pref, {'prefs_data' : 'pref 1'}),
},
{'user_name' : 'jack',
'pref' : (Pref, {'prefs_data' : 'pref 2'}),
},
{'user_name' : 'foo',
'pref' : (Pref, {'prefs_data' : 'pref 3'}),
}
]
for elem in data[1:]:
u = User()
ctx.current.save(u)
u.user_name = elem['user_name']
u.pref = Pref()
u.pref.prefs_data = elem['pref'][1]['prefs_data']
ctx.current.flush()
ctx.current.clear()
def testorphan(self):
l = ctx.current.query(User).select()
jack = l[1]
jack.pref = None
ctx.current.flush()
class M2MCascadeTest(testbase.AssertMixin):
def setUpAll(self):
global metadata, a, b, atob
metadata = BoundMetaData(testbase.db)
a = Table('a', metadata,
Column('id', Integer, primary_key=True),
Column('data', String(30))
)
b = Table('b', metadata,
Column('id', Integer, primary_key=True),
Column('data', String(30))
)
atob = Table('atob', metadata,
Column('aid', Integer, ForeignKey('a.id')),
Column('bid', Integer, ForeignKey('b.id'))
)
metadata.create_all()
def tearDownAll(self):
metadata.drop_all()
def testdeleteorphan(self):
class A(object):
def __init__(self, data):
self.data = data
class B(object):
def __init__(self, data):
self.data = data
mapper(A, a, properties={
# if no backref here, delete-orphan failed until [ticket:427] was fixed
'bs':relation(B, secondary=atob, cascade="all, delete-orphan")
})
mapper(B, b)
sess = create_session()
a1 = A('a1')
b1 = B('b1')
a1.bs.append(b1)
sess.save(a1)
sess.flush()
a1.bs.remove(b1)
sess.flush()
assert atob.count().scalar() ==0
assert b.count().scalar() == 0
assert a.count().scalar() == 1
def testcascadedelete(self):
class A(object):
def __init__(self, data):
self.data = data
class B(object):
def __init__(self, data):
self.data = data
mapper(A, a, properties={
'bs':relation(B, secondary=atob, cascade="all, delete-orphan")
})
mapper(B, b)
sess = create_session()
a1 = A('a1')
b1 = B('b1')
a1.bs.append(b1)
sess.save(a1)
sess.flush()
sess.delete(a1)
sess.flush()
assert atob.count().scalar() ==0
assert b.count().scalar() == 0
assert a.count().scalar() == 0
if __name__ == "__main__":
testbase.main()
|
