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from sqlalchemy.testing import eq_, assert_raises
from sqlalchemy.ext import declarative as decl
from sqlalchemy import testing
from sqlalchemy import Integer, String, ForeignKey
from sqlalchemy.testing.schema import Table, Column
from sqlalchemy.orm import relationship, create_session, \
clear_mappers, \
Session
from sqlalchemy.testing import fixtures
from sqlalchemy.testing.util import gc_collect
from sqlalchemy.ext.declarative.base import _DeferredMapperConfig
class DeclarativeReflectionBase(fixtures.TablesTest):
__requires__ = 'reflectable_autoincrement',
def setup(self):
global Base
Base = decl.declarative_base(testing.db)
def teardown(self):
super(DeclarativeReflectionBase, self).teardown()
clear_mappers()
class DeclarativeReflectionTest(DeclarativeReflectionBase):
@classmethod
def define_tables(cls, metadata):
Table('users', metadata,
Column('id', Integer,
primary_key=True, test_needs_autoincrement=True),
Column('name', String(50)), test_needs_fk=True)
Table(
'addresses',
metadata,
Column('id', Integer, primary_key=True,
test_needs_autoincrement=True),
Column('email', String(50)),
Column('user_id', Integer, ForeignKey('users.id')),
test_needs_fk=True,
)
Table(
'imhandles',
metadata,
Column('id', Integer, primary_key=True,
test_needs_autoincrement=True),
Column('user_id', Integer),
Column('network', String(50)),
Column('handle', String(50)),
test_needs_fk=True,
)
def test_basic(self):
class User(Base, fixtures.ComparableEntity):
__tablename__ = 'users'
__autoload__ = True
if testing.against('oracle', 'firebird'):
id = Column('id', Integer, primary_key=True,
test_needs_autoincrement=True)
addresses = relationship('Address', backref='user')
class Address(Base, fixtures.ComparableEntity):
__tablename__ = 'addresses'
__autoload__ = True
if testing.against('oracle', 'firebird'):
id = Column('id', Integer, primary_key=True,
test_needs_autoincrement=True)
u1 = User(name='u1', addresses=[Address(email='one'),
Address(email='two')])
sess = create_session()
sess.add(u1)
sess.flush()
sess.expunge_all()
eq_(sess.query(User).all(), [
User(name='u1',
addresses=[Address(email='one'), Address(email='two')])])
a1 = sess.query(Address).filter(Address.email == 'two').one()
eq_(a1, Address(email='two'))
eq_(a1.user, User(name='u1'))
def test_rekey(self):
class User(Base, fixtures.ComparableEntity):
__tablename__ = 'users'
__autoload__ = True
if testing.against('oracle', 'firebird'):
id = Column('id', Integer, primary_key=True,
test_needs_autoincrement=True)
nom = Column('name', String(50), key='nom')
addresses = relationship('Address', backref='user')
class Address(Base, fixtures.ComparableEntity):
__tablename__ = 'addresses'
__autoload__ = True
if testing.against('oracle', 'firebird'):
id = Column('id', Integer, primary_key=True,
test_needs_autoincrement=True)
u1 = User(nom='u1', addresses=[Address(email='one'),
Address(email='two')])
sess = create_session()
sess.add(u1)
sess.flush()
sess.expunge_all()
eq_(sess.query(User).all(), [
User(nom='u1',
addresses=[Address(email='one'), Address(email='two')])])
a1 = sess.query(Address).filter(Address.email == 'two').one()
eq_(a1, Address(email='two'))
eq_(a1.user, User(nom='u1'))
assert_raises(TypeError, User, name='u3')
def test_supplied_fk(self):
class IMHandle(Base, fixtures.ComparableEntity):
__tablename__ = 'imhandles'
__autoload__ = True
if testing.against('oracle', 'firebird'):
id = Column('id', Integer, primary_key=True,
test_needs_autoincrement=True)
user_id = Column('user_id', Integer, ForeignKey('users.id'))
class User(Base, fixtures.ComparableEntity):
__tablename__ = 'users'
__autoload__ = True
if testing.against('oracle', 'firebird'):
id = Column('id', Integer, primary_key=True,
test_needs_autoincrement=True)
handles = relationship('IMHandle', backref='user')
u1 = User(name='u1', handles=[
IMHandle(network='blabber', handle='foo'),
IMHandle(network='lol', handle='zomg')])
sess = create_session()
sess.add(u1)
sess.flush()
sess.expunge_all()
eq_(sess.query(User).all(), [
User(name='u1', handles=[IMHandle(network='blabber', handle='foo'),
IMHandle(network='lol', handle='zomg')])])
a1 = sess.query(IMHandle).filter(IMHandle.handle == 'zomg'
).one()
eq_(a1, IMHandle(network='lol', handle='zomg'))
eq_(a1.user, User(name='u1'))
class DeferredReflectBase(DeclarativeReflectionBase):
def teardown(self):
super(DeferredReflectBase, self).teardown()
_DeferredMapperConfig._configs.clear()
Base = None
class DeferredReflectPKFKTest(DeferredReflectBase):
@classmethod
def define_tables(cls, metadata):
Table("a", metadata,
Column('id', Integer,
primary_key=True, test_needs_autoincrement=True),
)
Table("b", metadata,
Column('id', Integer,
ForeignKey('a.id'),
primary_key=True),
Column('x', Integer, primary_key=True)
)
def test_pk_fk(self):
class B(decl.DeferredReflection, fixtures.ComparableEntity,
Base):
__tablename__ = 'b'
a = relationship("A")
class A(decl.DeferredReflection, fixtures.ComparableEntity,
Base):
__tablename__ = 'a'
decl.DeferredReflection.prepare(testing.db)
class DeferredReflectionTest(DeferredReflectBase):
@classmethod
def define_tables(cls, metadata):
Table('users', metadata,
Column('id', Integer,
primary_key=True, test_needs_autoincrement=True),
Column('name', String(50)), test_needs_fk=True)
Table(
'addresses',
metadata,
Column('id', Integer, primary_key=True,
test_needs_autoincrement=True),
Column('email', String(50)),
Column('user_id', Integer, ForeignKey('users.id')),
test_needs_fk=True,
)
def _roundtrip(self):
User = Base._decl_class_registry['User']
Address = Base._decl_class_registry['Address']
u1 = User(name='u1', addresses=[Address(email='one'),
Address(email='two')])
sess = create_session()
sess.add(u1)
sess.flush()
sess.expunge_all()
eq_(sess.query(User).all(), [
User(name='u1',
addresses=[Address(email='one'), Address(email='two')])])
a1 = sess.query(Address).filter(Address.email == 'two').one()
eq_(a1, Address(email='two'))
eq_(a1.user, User(name='u1'))
def test_basic_deferred(self):
class User(decl.DeferredReflection, fixtures.ComparableEntity,
Base):
__tablename__ = 'users'
addresses = relationship("Address", backref="user")
class Address(decl.DeferredReflection, fixtures.ComparableEntity,
Base):
__tablename__ = 'addresses'
decl.DeferredReflection.prepare(testing.db)
self._roundtrip()
def test_abstract_base(self):
class DefBase(decl.DeferredReflection, Base):
__abstract__ = True
class OtherDefBase(decl.DeferredReflection, Base):
__abstract__ = True
class User(fixtures.ComparableEntity, DefBase):
__tablename__ = 'users'
addresses = relationship("Address", backref="user")
class Address(fixtures.ComparableEntity, DefBase):
__tablename__ = 'addresses'
class Fake(OtherDefBase):
__tablename__ = 'nonexistent'
DefBase.prepare(testing.db)
self._roundtrip()
def test_redefine_fk_double(self):
class User(decl.DeferredReflection, fixtures.ComparableEntity,
Base):
__tablename__ = 'users'
addresses = relationship("Address", backref="user")
class Address(decl.DeferredReflection, fixtures.ComparableEntity,
Base):
__tablename__ = 'addresses'
user_id = Column(Integer, ForeignKey('users.id'))
decl.DeferredReflection.prepare(testing.db)
self._roundtrip()
def test_mapper_args_deferred(self):
"""test that __mapper_args__ is not called until *after*
table reflection"""
class User(decl.DeferredReflection, fixtures.ComparableEntity,
Base):
__tablename__ = 'users'
@decl.declared_attr
def __mapper_args__(cls):
return {
"order_by": cls.__table__.c.name
}
decl.DeferredReflection.prepare(testing.db)
sess = Session()
sess.add_all([
User(name='G'),
User(name='Q'),
User(name='A'),
User(name='C'),
])
sess.commit()
eq_(
sess.query(User).all(),
[
User(name='A'),
User(name='C'),
User(name='G'),
User(name='Q'),
]
)
@testing.requires.predictable_gc
def test_cls_not_strong_ref(self):
class User(decl.DeferredReflection, fixtures.ComparableEntity,
Base):
__tablename__ = 'users'
class Address(decl.DeferredReflection, fixtures.ComparableEntity,
Base):
__tablename__ = 'addresses'
eq_(len(_DeferredMapperConfig._configs), 2)
del Address
gc_collect()
eq_(len(_DeferredMapperConfig._configs), 1)
decl.DeferredReflection.prepare(testing.db)
assert not _DeferredMapperConfig._configs
class DeferredSecondaryReflectionTest(DeferredReflectBase):
@classmethod
def define_tables(cls, metadata):
Table('users', metadata,
Column('id', Integer,
primary_key=True, test_needs_autoincrement=True),
Column('name', String(50)), test_needs_fk=True)
Table('user_items', metadata,
Column('user_id', ForeignKey('users.id'), primary_key=True),
Column('item_id', ForeignKey('items.id'), primary_key=True),
test_needs_fk=True
)
Table('items', metadata,
Column('id', Integer, primary_key=True,
test_needs_autoincrement=True),
Column('name', String(50)),
test_needs_fk=True
)
def _roundtrip(self):
User = Base._decl_class_registry['User']
Item = Base._decl_class_registry['Item']
u1 = User(name='u1', items=[Item(name='i1'), Item(name='i2')])
sess = Session()
sess.add(u1)
sess.commit()
eq_(sess.query(User).all(), [
User(name='u1', items=[Item(name='i1'), Item(name='i2')])])
def test_string_resolution(self):
class User(decl.DeferredReflection, fixtures.ComparableEntity, Base):
__tablename__ = 'users'
items = relationship("Item", secondary="user_items")
class Item(decl.DeferredReflection, fixtures.ComparableEntity, Base):
__tablename__ = 'items'
decl.DeferredReflection.prepare(testing.db)
self._roundtrip()
def test_table_resolution(self):
class User(decl.DeferredReflection, fixtures.ComparableEntity, Base):
__tablename__ = 'users'
items = relationship("Item",
secondary=Table("user_items", Base.metadata))
class Item(decl.DeferredReflection, fixtures.ComparableEntity, Base):
__tablename__ = 'items'
decl.DeferredReflection.prepare(testing.db)
self._roundtrip()
class DeferredInhReflectBase(DeferredReflectBase):
def _roundtrip(self):
Foo = Base._decl_class_registry['Foo']
Bar = Base._decl_class_registry['Bar']
s = Session(testing.db)
s.add_all([
Bar(data='d1', bar_data='b1'),
Bar(data='d2', bar_data='b2'),
Bar(data='d3', bar_data='b3'),
Foo(data='d4')
])
s.commit()
eq_(
s.query(Foo).order_by(Foo.id).all(),
[
Bar(data='d1', bar_data='b1'),
Bar(data='d2', bar_data='b2'),
Bar(data='d3', bar_data='b3'),
Foo(data='d4')
]
)
class DeferredSingleInhReflectionTest(DeferredInhReflectBase):
@classmethod
def define_tables(cls, metadata):
Table("foo", metadata,
Column('id', Integer, primary_key=True,
test_needs_autoincrement=True),
Column('type', String(32)),
Column('data', String(30)),
Column('bar_data', String(30))
)
def test_basic(self):
class Foo(decl.DeferredReflection, fixtures.ComparableEntity,
Base):
__tablename__ = 'foo'
__mapper_args__ = {"polymorphic_on": "type",
"polymorphic_identity": "foo"}
class Bar(Foo):
__mapper_args__ = {"polymorphic_identity": "bar"}
decl.DeferredReflection.prepare(testing.db)
self._roundtrip()
def test_add_subclass_column(self):
class Foo(decl.DeferredReflection, fixtures.ComparableEntity,
Base):
__tablename__ = 'foo'
__mapper_args__ = {"polymorphic_on": "type",
"polymorphic_identity": "foo"}
class Bar(Foo):
__mapper_args__ = {"polymorphic_identity": "bar"}
bar_data = Column(String(30))
decl.DeferredReflection.prepare(testing.db)
self._roundtrip()
def test_add_pk_column(self):
class Foo(decl.DeferredReflection, fixtures.ComparableEntity,
Base):
__tablename__ = 'foo'
__mapper_args__ = {"polymorphic_on": "type",
"polymorphic_identity": "foo"}
id = Column(Integer, primary_key=True)
class Bar(Foo):
__mapper_args__ = {"polymorphic_identity": "bar"}
decl.DeferredReflection.prepare(testing.db)
self._roundtrip()
class DeferredJoinedInhReflectionTest(DeferredInhReflectBase):
@classmethod
def define_tables(cls, metadata):
Table("foo", metadata,
Column('id', Integer, primary_key=True,
test_needs_autoincrement=True),
Column('type', String(32)),
Column('data', String(30)),
test_needs_fk=True,
)
Table('bar', metadata,
Column('id', Integer, ForeignKey('foo.id'), primary_key=True),
Column('bar_data', String(30)),
test_needs_fk=True,
)
def test_basic(self):
class Foo(decl.DeferredReflection, fixtures.ComparableEntity,
Base):
__tablename__ = 'foo'
__mapper_args__ = {"polymorphic_on": "type",
"polymorphic_identity": "foo"}
class Bar(Foo):
__tablename__ = 'bar'
__mapper_args__ = {"polymorphic_identity": "bar"}
decl.DeferredReflection.prepare(testing.db)
self._roundtrip()
def test_add_subclass_column(self):
class Foo(decl.DeferredReflection, fixtures.ComparableEntity,
Base):
__tablename__ = 'foo'
__mapper_args__ = {"polymorphic_on": "type",
"polymorphic_identity": "foo"}
class Bar(Foo):
__tablename__ = 'bar'
__mapper_args__ = {"polymorphic_identity": "bar"}
bar_data = Column(String(30))
decl.DeferredReflection.prepare(testing.db)
self._roundtrip()
def test_add_pk_column(self):
class Foo(decl.DeferredReflection, fixtures.ComparableEntity,
Base):
__tablename__ = 'foo'
__mapper_args__ = {"polymorphic_on": "type",
"polymorphic_identity": "foo"}
id = Column(Integer, primary_key=True)
class Bar(Foo):
__tablename__ = 'bar'
__mapper_args__ = {"polymorphic_identity": "bar"}
decl.DeferredReflection.prepare(testing.db)
self._roundtrip()
def test_add_fk_pk_column(self):
class Foo(decl.DeferredReflection, fixtures.ComparableEntity,
Base):
__tablename__ = 'foo'
__mapper_args__ = {"polymorphic_on": "type",
"polymorphic_identity": "foo"}
class Bar(Foo):
__tablename__ = 'bar'
__mapper_args__ = {"polymorphic_identity": "bar"}
id = Column(Integer, ForeignKey('foo.id'), primary_key=True)
decl.DeferredReflection.prepare(testing.db)
self._roundtrip()
|
