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import testenv; testenv.configure_for_tests()
from testlib import sa, testing
from testlib.sa import Table, Column, Integer, String, ForeignKey
from testlib.sa.orm import mapper, relation, backref, create_session
from testlib.testing import eq_
from orm import _base
class EntityTest(_base.MappedTest):
"""Mappers scoped to an entity_name"""
def define_tables(self, metadata):
Table('user1', metadata,
Column('user_id', Integer, primary_key=True,
test_needs_autoincrement=True),
Column('name', String(60), nullable=False))
Table('user2', metadata,
Column('user_id', Integer, primary_key=True,
test_needs_autoincrement=True),
Column('name', String(60), nullable=False))
Table('address1', metadata,
Column('address_id', Integer, primary_key=True,
test_needs_autoincrement=True),
Column('user_id', Integer, ForeignKey('user1.user_id'),
nullable=False),
Column('email', String(100), nullable=False))
Table('address2', metadata,
Column('address_id', Integer, primary_key=True,
test_needs_autoincrement=True),
Column('user_id', Integer, ForeignKey('user2.user_id'),
nullable=False),
Column('email', String(100), nullable=False))
def setup_classes(self):
class User(_base.BasicEntity):
pass
class Address(_base.BasicEntity):
pass
class Address1(_base.BasicEntity):
pass
class Address2(_base.BasicEntity):
pass
@testing.resolve_artifact_names
def test_entity_name_assignment_by_extension(self):
"""
Tests a pair of one-to-many mapper structures, establishing that both
parent and child objects honor the "entity_name" attribute attached to
the object instances.
"""
ctx = sa.orm.scoped_session(create_session)
ma1 = mapper(Address, address1, entity_name='address1',
extension=ctx.extension)
ma2 = mapper(Address, address2, entity_name='address2',
extension=ctx.extension)
mapper(User, user1, entity_name='user1',
extension=ctx.extension,
properties=dict(addresses=relation(ma1)))
mapper(User, user2, entity_name='user2',
extension=ctx.extension,
properties=dict(addresses=relation(ma2)))
u1 = User(name='this is user 1', _sa_entity_name='user1')
a1 = Address(email='a1@foo.com', _sa_entity_name='address1')
u1.addresses.append(a1)
u2 = User(name='this is user 2', _sa_entity_name='user2')
a2 = Address(email='a2@foo.com', _sa_entity_name='address2')
u2.addresses.append(a2)
ctx.flush()
eq_(user1.select().execute().fetchall(), [(u1.user_id, u1.name)])
eq_(user2.select().execute().fetchall(), [(u2.user_id, u2.name)])
eq_(address1.select().execute().fetchall(),
[(a1.address_id, u1.user_id, 'a1@foo.com')])
eq_(address2.select().execute().fetchall(),
[(a1.address_id, u2.user_id, 'a2@foo.com')])
ctx.clear()
u1list = ctx.query(User, entity_name='user1').all()
u2list = ctx.query(User, entity_name='user2').all()
eq_(len(u1list), 1)
eq_(len(u2list), 1)
assert u1list[0] is not u2list[0]
eq_(len(u1list[0].addresses), 1)
eq_(len(u2list[0].addresses), 1)
u1 = ctx.query(User, entity_name='user1').first()
ctx.refresh(u1)
ctx.expire(u1)
@testing.resolve_artifact_names
def test_cascade(self):
ma1 = mapper(Address, address1, entity_name='address1')
ma2 = mapper(Address, address2, entity_name='address2')
mapper(User, user1, entity_name='user1', properties=dict(
addresses=relation(ma1)))
mapper(User, user2, entity_name='user2', properties=dict(
addresses=relation(ma2)))
sess = create_session()
u1 = User(name='this is user 1')
sess.add(u1, entity_name='user1')
a1 = Address(email='a1@foo.com')
u1.addresses.append(a1)
u2 = User(name='this is user 2')
a2 = Address(email='a2@foo.com')
u2.addresses.append(a2)
sess.add(u2, entity_name='user2')
sess.flush()
eq_(user1.select().execute().fetchall(), [(u1.user_id, u1.name)])
eq_(user2.select().execute().fetchall(), [(u2.user_id, u2.name)])
eq_(address1.select().execute().fetchall(),
[(a1.address_id, u1.user_id, 'a1@foo.com')])
eq_(address2.select().execute().fetchall(),
[(a1.address_id, u2.user_id, 'a2@foo.com')])
sess.clear()
u1list = sess.query(User, entity_name='user1').all()
u2list = sess.query(User, entity_name='user2').all()
eq_(len(u1list), 1)
eq_(len(u2list), 1)
assert u1list[0] is not u2list[0]
eq_(len(u1list[0].addresses), 1)
eq_(len(u2list[0].addresses), 1)
@testing.resolve_artifact_names
def test_polymorphic(self):
"""entity_name can be used to have two kinds of relations on the same class."""
ctx = sa.orm.scoped_session(create_session)
ma1 = mapper(Address1, address1, extension=ctx.extension)
ma2 = mapper(Address2, address2, extension=ctx.extension)
mapper(User, user1, entity_name='user1', extension=ctx.extension,
properties=dict(
addresses=relation(ma1)))
mapper(User, user2, entity_name='user2', extension=ctx.extension,
properties=dict(
addresses=relation(ma2)))
u1 = User(name='this is user 1', _sa_entity_name='user1')
a1 = Address1(email='a1@foo.com')
u1.addresses.append(a1)
u2 = User(name='this is user 2', _sa_entity_name='user2')
a2 = Address2(email='a2@foo.com')
u2.addresses.append(a2)
ctx.flush()
eq_(user1.select().execute().fetchall(), [(u1.user_id, u1.name)])
eq_(user2.select().execute().fetchall(), [(u2.user_id, u2.name)])
eq_(address1.select().execute().fetchall(),
[(a1.address_id, u1.user_id, 'a1@foo.com')])
eq_(address2.select().execute().fetchall(),
[(a1.address_id, u2.user_id, 'a2@foo.com')])
ctx.clear()
u1list = ctx.query(User, entity_name='user1').all()
u2list = ctx.query(User, entity_name='user2').all()
eq_(len(u1list), 1)
eq_(len(u2list), 1)
assert u1list[0] is not u2list[0]
eq_(len(u1list[0].addresses), 1)
eq_(len(u2list[0].addresses), 1)
# the lazy load requires that setup_loader() check that the correct
# LazyLoader is setting up for each load
assert isinstance(u1list[0].addresses[0], Address1)
assert isinstance(u2list[0].addresses[0], Address2)
@testing.resolve_artifact_names
def testpolymorphic_deferred(self):
"""Deferred columns load properly using entity names"""
mapper(User, user1, entity_name='user1', properties=dict(
name=sa.orm.deferred(user1.c.name)))
mapper(User, user2, entity_name='user2', properties=dict(
name=sa.orm.deferred(user2.c.name)))
u1 = User(name='this is user 1')
u2 = User(name='this is user 2')
session = create_session()
session.add(u1, entity_name='user1')
session.add(u2, entity_name='user2')
session.flush()
eq_(user1.select().execute().fetchall(), [(u1.user_id, u1.name)])
eq_(user2.select().execute().fetchall(), [(u2.user_id, u2.name)])
session.clear()
u1list = session.query(User, entity_name='user1').all()
u2list = session.query(User, entity_name='user2').all()
eq_(len(u1list), 1)
eq_(len(u2list), 1)
assert u1list[0] is not u2list[0]
# the deferred column load requires that setup_loader() check that the
# correct DeferredColumnLoader is setting up for each load
eq_(u1list[0].name, 'this is user 1')
eq_(u2list[0].name, 'this is user 2')
class SelfReferentialTest(_base.MappedTest):
def define_tables(self, metadata):
Table('nodes', metadata,
Column('id', Integer, primary_key=True),
Column('parent_id', Integer, ForeignKey('nodes.id')),
Column('data', String(50)),
Column('type', String(50)))
def setup_classes(self):
class Node(_base.ComparableEntity):
pass
# fails inconsistently. entity name needs deterministic instrumentation.
@testing.resolve_artifact_names
def FIXME_test_relation(self):
foonodes = nodes.select().where(nodes.c.type=='foo').alias()
barnodes = nodes.select().where(nodes.c.type=='bar').alias()
# TODO: the order of instrumentation here is not deterministic;
# therefore the test fails sporadically since "Node.data" references
# different mappers at different times
m1 = mapper(Node, nodes)
m2 = mapper(Node, foonodes, entity_name='foo')
m3 = mapper(Node, barnodes, entity_name='bar')
m1.add_property('foonodes', relation(
m2,
primaryjoin=nodes.c.id == foonodes.c.parent_id,
backref=backref('foo_parent',
remote_side=nodes.c.id,
primaryjoin=nodes.c.id==foonodes.c.parent_id)))
m1.add_property('barnodes', relation(
m3,
primaryjoin=nodes.c.id==barnodes.c.parent_id,
backref=backref('bar_parent',
remote_side=nodes.c.id,
primaryjoin=nodes.c.id==barnodes.c.parent_id)))
sess = create_session()
n1 = Node(data='n1', type='bat')
n1.foonodes.append(Node(data='n2', type='foo'))
Node(data='n3', type='bar', bar_parent=n1)
sess.add(n1)
sess.flush()
sess.clear()
eq_(sess.query(Node, entity_name="bar").one(),
Node(data='n3'))
eq_(sess.query(Node).filter(Node.data=='n1').one(),
Node(data='n1',
foonodes=[Node(data='n2')],
barnodes=[Node(data='n3')]))
if __name__ == "__main__":
testenv.main()
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