def test_one_to_many_delete_all(self):
mapper(User, users, properties={
'addresses': relationship(Address),
})
mapper(Address, addresses)
sess = create_session()
a1, a2 = Address(email_address='a1'), Address(email_address='a2')
u1 = User(name='u1', addresses=[a1, a2])
sess.add(u1)
sess.flush()
sess.delete(u1)
sess.delete(a1)
sess.delete(a2)
self.assert_sql_execution(
testing.db,
sess.flush,
CompiledSQL("DELETE FROM addresses WHERE addresses.id = :id",
[{
'id': a1.id
}, {
'id': a2.id
}]),
CompiledSQL("DELETE FROM users WHERE users.id = :id",
{'id': u1.id}),
)
def test_one_to_many_delete_parent(self):
mapper(User, users, properties={
'addresses': relationship(Address),
})
mapper(Address, addresses)
sess = create_session()
a1, a2 = Address(email_address='a1'), Address(email_address='a2')
u1 = User(name='u1', addresses=[a1, a2])
sess.add(u1)
sess.flush()
sess.delete(u1)
self.assert_sql_execution(
testing.db,
sess.flush,
CompiledSQL(
"UPDATE addresses SET user_id=:user_id WHERE "
"addresses.id = :addresses_id",
lambda ctx: [{
u'addresses_id': a1.id,
'user_id': None
}]),
CompiledSQL(
"UPDATE addresses SET user_id=:user_id WHERE "
"addresses.id = :addresses_id",
lambda ctx: [{
u'addresses_id': a2.id,
'user_id': None
}]),
CompiledSQL("DELETE FROM users WHERE users.id = :id",
{'id': u1.id}),
)
def test_many_to_one_delete_target(self):
mapper(User, users)
mapper(Address, addresses, properties={'user': relationship(User)})
sess = create_session()
u1 = User(name='u1')
a1, a2 = Address(email_address='a1', user=u1), \
Address(email_address='a2', user=u1)
sess.add_all([a1, a2])
sess.flush()
sess.delete(u1)
a1.user = a2.user = None
self.assert_sql_execution(
testing.db,
sess.flush,
CompiledSQL(
"UPDATE addresses SET user_id=:user_id WHERE "
"addresses.id = :addresses_id",
lambda ctx: [{
u'addresses_id': a1.id,
'user_id': None
}]),
CompiledSQL(
"UPDATE addresses SET user_id=:user_id WHERE "
"addresses.id = :addresses_id",
lambda ctx: [{
u'addresses_id': a2.id,
'user_id': None
}]),
CompiledSQL("DELETE FROM users WHERE users.id = :id",
{'id': u1.id}),
)
def test_one_to_many_save(self):
mapper(User, users, properties={
'addresses': relationship(Address),
})
mapper(Address, addresses)
sess = create_session()
a1, a2 = Address(email_address='a1'), Address(email_address='a2')
u1 = User(name='u1', addresses=[a1, a2])
sess.add(u1)
self.assert_sql_execution(
testing.db,
sess.flush,
CompiledSQL("INSERT INTO users (name) VALUES (:name)",
{'name': 'u1'}),
CompiledSQL(
"INSERT INTO addresses (user_id, email_address) "
"VALUES (:user_id, :email_address)", lambda ctx: {
'email_address': 'a1',
'user_id': u1.id
}),
CompiledSQL(
"INSERT INTO addresses (user_id, email_address) "
"VALUES (:user_id, :email_address)", lambda ctx: {
'email_address': 'a2',
'user_id': u1.id
}),
)
def test_many_to_one_delete_unloaded(self):
mapper(User, users)
mapper(Address, addresses, properties={'parent': relationship(User)})
parent = User(name='p1')
c1, c2 = Address(email_address='c1', parent=parent), \
Address(email_address='c2', parent=parent)
session = Session()
session.add_all([c1, c2])
session.add(parent)
session.flush()
pid = parent.id
c1id = c1.id
c2id = c2.id
session.expire(parent)
session.expire(c1)
session.expire(c2)
session.delete(c1)
session.delete(c2)
session.delete(parent)
# testing that relationships
# are loaded even if all ids/references are
# expired
self.assert_sql_execution(
testing.db,
session.flush,
AllOf(
# ensure all three m2os are loaded.
# the selects here are in fact unexpiring
# each row - the m2o comes from the identity map.
CompiledSQL(
"SELECT addresses.id AS addresses_id, addresses.user_id AS "
"addresses_user_id, addresses.email_address AS "
"addresses_email_address FROM addresses WHERE addresses.id = "
":param_1", lambda ctx: {'param_1': c1id}),
CompiledSQL(
"SELECT addresses.id AS addresses_id, addresses.user_id AS "
"addresses_user_id, addresses.email_address AS "
"addresses_email_address FROM addresses WHERE addresses.id = "
":param_1", lambda ctx: {'param_1': c2id}),
CompiledSQL(
"SELECT users.id AS users_id, users.name AS users_name "
"FROM users WHERE users.id = :param_1",
lambda ctx: {'param_1': pid}),
),
CompiledSQL("DELETE FROM addresses WHERE addresses.id = :id",
lambda ctx: [{
'id': c1id
}, {
'id': c2id
}]),
CompiledSQL("DELETE FROM users WHERE users.id = :id",
lambda ctx: {'id': pid}),
)
def test_pk_violation(self):
s = self.session()
a1 = Address(email_address='foo')
u1 = User(id=1, name='ed', addresses=[a1])
s.add(u1)
s.commit()
a2 = Address(email_address='bar')
u2 = User(id=1, name='jack', addresses=[a2])
u1.name = 'edward'
a1.email_address = 'foober'
s.add(u2)
assert_raises(sa_exc.FlushError, s.commit)
assert_raises(sa_exc.InvalidRequestError, s.commit)
s.rollback()
assert u2 not in s
assert a2 not in s
assert u1 in s
assert a1 in s
assert u1.name == 'ed'
assert a1.email_address == 'foo'
u1.name = 'edward'
a1.email_address = 'foober'
s.commit()
eq_(
s.query(User).all(),
[User(id=1, name='edward', addresses=[Address(email_address='foober')])]
)
def test_pk_violation_with_savepoint(self):
s = self.session()
a1 = Address(email_address='foo')
u1 = User(id=1, name='ed', addresses=[a1])
s.add(u1)
s.commit()
a2 = Address(email_address='bar')
u2 = User(id=1, name='jack', addresses=[a2])
u1.name = 'edward'
a1.email_address = 'foober'
s.begin_nested()
s.add(u2)
assert_raises(sa_exc.FlushError, s.commit)
assert_raises(sa_exc.InvalidRequestError, s.commit)
s.rollback()
assert u2 not in s
assert a2 not in s
assert u1 in s
assert a1 in s
s.commit()
assert s.query(User).all() == [
User(id=1,
name='edward',
addresses=[Address(email_address='foober')])
]
def test_savepoint_rollback_collections(self):
s = self.session()
u1 = User(name='ed', addresses=[Address(email_address='foo')])
s.add(u1)
s.commit()
u1.name='edward'
u1.addresses.append(Address(email_address='bar'))
s.begin_nested()
u2 = User(name='jack', addresses=[Address(email_address='bat')])
s.add(u2)
eq_(s.query(User).order_by(User.id).all(),
[
User(name='edward', addresses=[Address(email_address='foo'), Address(email_address='bar')]),
User(name='jack', addresses=[Address(email_address='bat')])
]
)
s.rollback()
eq_(s.query(User).order_by(User.id).all(),
[
User(name='edward', addresses=[Address(email_address='foo'), Address(email_address='bar')]),
]
)
s.commit()
eq_(s.query(User).order_by(User.id).all(),
[
User(name='edward', addresses=[Address(email_address='foo'), Address(email_address='bar')]),
]
)
def test_o2m_flush_size(self):
mapper(User, users, properties={
'addresses': relationship(Address),
})
mapper(Address, addresses)
sess = create_session()
u1 = User(name='ed')
sess.add(u1)
self._assert_uow_size(sess, 2)
sess.flush()
u1.name = 'jack'
self._assert_uow_size(sess, 2)
sess.flush()
a1 = Address(email_address='foo')
sess.add(a1)
sess.flush()
u1.addresses.append(a1)
self._assert_uow_size(sess, 6)
sess.flush()
sess = create_session()
u1 = sess.query(User).first()
u1.name = 'ed'
self._assert_uow_size(sess, 2)
u1.addresses
self._assert_uow_size(sess, 6)
def test_update_deleted_on_rollback_cascade(self):
s = self.session()
u1 = User(name='ed', addresses=[Address(email_address='foo')])
s.add(u1)
s.commit()
s.delete(u1)
assert u1 in s.deleted
assert u1.addresses[0] in s.deleted
s.rollback()
assert u1 in s
assert u1 not in s.deleted
assert u1.addresses[0] not in s.deleted
def test_update_deleted_on_rollback_orphan(self):
s = self.session()
u1 = User(name='ed', addresses=[Address(email_address='foo')])
s.add(u1)
s.commit()
a1 = u1.addresses[0]
u1.addresses.remove(a1)
s.flush()
eq_(s.query(Address).filter(Address.email_address == 'foo').all(), [])
s.rollback()
assert a1 not in s.deleted
assert u1.addresses == [a1]
