mirror of
https://github.com/sqlalchemy/sqlalchemy.git
synced 2026-06-04 06:48:27 -04:00
Mike Bayer
d371637af0
within a mapper's deferred load of inherited attributes. - declarative initialization of Columns adjusted so that non-renamed columns initialize in the same way as a non declarative mapper. This allows an inheriting mapper to set up its same-named "id" columns in particular such that the parent "id" column is favored over the child column, reducing database round trips when this value is requested.
947 lines
32 KiB
Python
947 lines
32 KiB
Python
import testenv; testenv.configure_for_tests()
|
|
|
|
from sqlalchemy.ext import declarative as decl
|
|
from sqlalchemy import exc
|
|
from testlib import sa, testing
|
|
from testlib.sa import MetaData, Table, Column, Integer, String, ForeignKey, ForeignKeyConstraint, asc
|
|
from testlib.sa.orm import relation, create_session, class_mapper, eagerload, compile_mappers
|
|
from testlib.testing import eq_
|
|
from orm._base import ComparableEntity
|
|
|
|
|
|
class DeclarativeTest(testing.TestBase, testing.AssertsExecutionResults):
|
|
def setUp(self):
|
|
global Base
|
|
Base = decl.declarative_base(testing.db)
|
|
|
|
def tearDown(self):
|
|
Base.metadata.drop_all()
|
|
|
|
def test_basic(self):
|
|
class User(Base, ComparableEntity):
|
|
__tablename__ = 'users'
|
|
|
|
id = Column('id', Integer, primary_key=True)
|
|
name = Column('name', String(50))
|
|
addresses = relation("Address", backref="user")
|
|
|
|
class Address(Base, ComparableEntity):
|
|
__tablename__ = 'addresses'
|
|
|
|
id = Column(Integer, primary_key=True)
|
|
email = Column(String(50), key='_email')
|
|
user_id = Column('user_id', Integer, ForeignKey('users.id'),
|
|
key='_user_id')
|
|
|
|
Base.metadata.create_all()
|
|
|
|
eq_(Address.__table__.c['id'].name, 'id')
|
|
eq_(Address.__table__.c['_email'].name, 'email')
|
|
eq_(Address.__table__.c['_user_id'].name, 'user_id')
|
|
|
|
u1 = User(name='u1', addresses=[
|
|
Address(email='one'),
|
|
Address(email='two'),
|
|
])
|
|
sess = create_session()
|
|
sess.save(u1)
|
|
sess.flush()
|
|
sess.clear()
|
|
|
|
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_recompile_on_othermapper(self):
|
|
"""declarative version of the same test in mappers.py"""
|
|
|
|
from sqlalchemy.orm import mapperlib
|
|
|
|
class User(Base):
|
|
__tablename__ = 'users'
|
|
|
|
id = Column('id', Integer, primary_key=True)
|
|
name = Column('name', String(50))
|
|
|
|
class Address(Base):
|
|
__tablename__ = 'addresses'
|
|
|
|
id = Column('id', Integer, primary_key=True)
|
|
email = Column('email', String(50))
|
|
user_id = Column('user_id', Integer, ForeignKey('users.id'))
|
|
user = relation("User", primaryjoin=user_id == User.id,
|
|
backref="addresses")
|
|
|
|
assert mapperlib._new_mappers is True
|
|
u = User()
|
|
assert User.addresses
|
|
assert mapperlib._new_mappers is False
|
|
|
|
def test_string_dependency_resolution(self):
|
|
from sqlalchemy.sql import desc
|
|
|
|
class User(Base, ComparableEntity):
|
|
__tablename__ = 'users'
|
|
id = Column(Integer, primary_key=True)
|
|
name = Column(String(50))
|
|
addresses = relation("Address", order_by="desc(Address.email)",
|
|
primaryjoin="User.id==Address.user_id", foreign_keys="[Address.user_id]")
|
|
|
|
class Address(Base, ComparableEntity):
|
|
__tablename__ = 'addresses'
|
|
id = Column(Integer, primary_key=True)
|
|
email = Column(String(50))
|
|
user_id = Column(Integer) # note no foreign key
|
|
|
|
Base.metadata.create_all()
|
|
|
|
sess = create_session()
|
|
u1 = User(name='ed', addresses=[Address(email='abc'), Address(email='def'), Address(email='xyz')])
|
|
sess.add(u1)
|
|
sess.flush()
|
|
sess.clear()
|
|
self.assertEquals(sess.query(User).filter(User.name == 'ed').one(),
|
|
User(name='ed', addresses=[Address(email='xyz'), Address(email='def'), Address(email='abc')])
|
|
)
|
|
|
|
class Foo(Base, ComparableEntity):
|
|
__tablename__ = 'foo'
|
|
id = Column(Integer, primary_key=True)
|
|
rel = relation("User", primaryjoin="User.addresses==Foo.id")
|
|
self.assertRaisesMessage(exc.InvalidRequestError, "'addresses' is not an instance of ColumnProperty", compile_mappers)
|
|
|
|
def test_uncompiled_attributes_in_relation(self):
|
|
class Address(Base, ComparableEntity):
|
|
__tablename__ = 'addresses'
|
|
id = Column(Integer, primary_key=True)
|
|
email = Column(String(50))
|
|
user_id = Column(Integer, ForeignKey('users.id'))
|
|
|
|
class User(Base, ComparableEntity):
|
|
__tablename__ = 'users'
|
|
id = Column(Integer, primary_key=True)
|
|
name = Column(String(50))
|
|
addresses = relation("Address", order_by=Address.email,
|
|
foreign_keys=Address.user_id,
|
|
remote_side=Address.user_id,
|
|
)
|
|
|
|
# get the mapper for User. User mapper will compile,
|
|
# "addresses" relation will call upon Address.user_id for
|
|
# its clause element. Address.user_id is a _CompileOnAttr,
|
|
# which then calls class_mapper(Address). But ! We're already
|
|
# "in compilation", but class_mapper(Address) needs to initialize
|
|
# regardless, or COA's assertion fails
|
|
# and things generally go downhill from there.
|
|
class_mapper(User)
|
|
|
|
Base.metadata.create_all()
|
|
|
|
sess = create_session()
|
|
u1 = User(name='ed', addresses=[Address(email='abc'), Address(email='xyz'), Address(email='def')])
|
|
sess.add(u1)
|
|
sess.flush()
|
|
sess.clear()
|
|
self.assertEquals(sess.query(User).filter(User.name == 'ed').one(),
|
|
User(name='ed', addresses=[Address(email='abc'), Address(email='def'), Address(email='xyz')])
|
|
)
|
|
|
|
def test_nice_dependency_error(self):
|
|
class User(Base):
|
|
__tablename__ = 'users'
|
|
id = Column('id', Integer, primary_key=True)
|
|
addresses = relation("Address")
|
|
|
|
def go():
|
|
class Address(Base):
|
|
__tablename__ = 'addresses'
|
|
|
|
id = Column(Integer, primary_key=True)
|
|
foo = sa.orm.column_property(User.id == 5)
|
|
self.assertRaises(sa.exc.InvalidRequestError, go)
|
|
|
|
def test_custom_base(self):
|
|
class MyBase(object):
|
|
def foobar(self):
|
|
return "foobar"
|
|
Base = decl.declarative_base(cls=MyBase)
|
|
assert hasattr(Base, 'metadata')
|
|
assert Base().foobar() == "foobar"
|
|
|
|
def test_add_prop(self):
|
|
class User(Base, ComparableEntity):
|
|
__tablename__ = 'users'
|
|
|
|
id = Column('id', Integer, primary_key=True)
|
|
User.name = Column('name', String(50))
|
|
User.addresses = relation("Address", backref="user")
|
|
|
|
class Address(Base, ComparableEntity):
|
|
__tablename__ = 'addresses'
|
|
|
|
id = Column(Integer, primary_key=True)
|
|
Address.email = Column(String(50), key='_email')
|
|
Address.user_id = Column('user_id', Integer, ForeignKey('users.id'),
|
|
key='_user_id')
|
|
|
|
Base.metadata.create_all()
|
|
|
|
eq_(Address.__table__.c['id'].name, 'id')
|
|
eq_(Address.__table__.c['_email'].name, 'email')
|
|
eq_(Address.__table__.c['_user_id'].name, 'user_id')
|
|
|
|
u1 = User(name='u1', addresses=[
|
|
Address(email='one'),
|
|
Address(email='two'),
|
|
])
|
|
sess = create_session()
|
|
sess.save(u1)
|
|
sess.flush()
|
|
sess.clear()
|
|
|
|
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_eager_order_by(self):
|
|
class Address(Base, ComparableEntity):
|
|
__tablename__ = 'addresses'
|
|
|
|
id = Column('id', Integer, primary_key=True)
|
|
email = Column('email', String(50))
|
|
user_id = Column('user_id', Integer, ForeignKey('users.id'))
|
|
|
|
class User(Base, ComparableEntity):
|
|
__tablename__ = 'users'
|
|
|
|
id = Column('id', Integer, primary_key=True)
|
|
name = Column('name', String(50))
|
|
addresses = relation("Address", order_by=Address.email)
|
|
|
|
Base.metadata.create_all()
|
|
u1 = User(name='u1', addresses=[
|
|
Address(email='two'),
|
|
Address(email='one'),
|
|
])
|
|
sess = create_session()
|
|
sess.save(u1)
|
|
sess.flush()
|
|
sess.clear()
|
|
eq_(sess.query(User).options(eagerload(User.addresses)).all(), [User(name='u1', addresses=[
|
|
Address(email='one'),
|
|
Address(email='two'),
|
|
])])
|
|
|
|
|
|
def test_as_declarative(self):
|
|
class User(ComparableEntity):
|
|
__tablename__ = 'users'
|
|
|
|
id = Column('id', Integer, primary_key=True)
|
|
name = Column('name', String(50))
|
|
addresses = relation("Address", backref="user")
|
|
|
|
class Address(ComparableEntity):
|
|
__tablename__ = 'addresses'
|
|
|
|
id = Column('id', Integer, primary_key=True)
|
|
email = Column('email', String(50))
|
|
user_id = Column('user_id', Integer, ForeignKey('users.id'))
|
|
|
|
reg = {}
|
|
decl.instrument_declarative(User, reg, Base.metadata)
|
|
decl.instrument_declarative(Address, reg, Base.metadata)
|
|
Base.metadata.create_all()
|
|
|
|
u1 = User(name='u1', addresses=[
|
|
Address(email='one'),
|
|
Address(email='two'),
|
|
])
|
|
sess = create_session()
|
|
sess.save(u1)
|
|
sess.flush()
|
|
sess.clear()
|
|
|
|
eq_(sess.query(User).all(), [User(name='u1', addresses=[
|
|
Address(email='one'),
|
|
Address(email='two'),
|
|
])])
|
|
|
|
def test_custom_mapper(self):
|
|
class MyExt(sa.orm.MapperExtension):
|
|
def create_instance(self):
|
|
return "CHECK"
|
|
|
|
def mymapper(cls, tbl, **kwargs):
|
|
kwargs['extension'] = MyExt()
|
|
return sa.orm.mapper(cls, tbl, **kwargs)
|
|
|
|
from sqlalchemy.orm.mapper import Mapper
|
|
class MyMapper(Mapper):
|
|
def __init__(self, *args, **kwargs):
|
|
kwargs['extension'] = MyExt()
|
|
Mapper.__init__(self, *args, **kwargs)
|
|
|
|
from sqlalchemy.orm import scoping
|
|
ss = scoping.ScopedSession(create_session)
|
|
ss.extension = MyExt()
|
|
ss_mapper = ss.mapper
|
|
|
|
for mapperfunc in (mymapper, MyMapper, ss_mapper):
|
|
base = decl.declarative_base()
|
|
class Foo(base):
|
|
__tablename__ = 'foo'
|
|
__mapper_cls__ = mapperfunc
|
|
id = Column(Integer, primary_key=True)
|
|
eq_(Foo.__mapper__.compile().extension.create_instance(), 'CHECK')
|
|
|
|
base = decl.declarative_base(mapper=mapperfunc)
|
|
class Foo(base):
|
|
__tablename__ = 'foo'
|
|
id = Column(Integer, primary_key=True)
|
|
eq_(Foo.__mapper__.compile().extension.create_instance(), 'CHECK')
|
|
|
|
|
|
@testing.emits_warning('Ignoring declarative-like tuple value of '
|
|
'attribute id')
|
|
def test_oops(self):
|
|
def define():
|
|
class User(Base, ComparableEntity):
|
|
__tablename__ = 'users'
|
|
|
|
id = Column('id', Integer, primary_key=True),
|
|
name = Column('name', String(50))
|
|
assert False
|
|
self.assertRaisesMessage(
|
|
sa.exc.ArgumentError,
|
|
"Mapper Mapper|User|users could not assemble any primary key",
|
|
define)
|
|
|
|
def test_table_args(self):
|
|
class Foo(Base):
|
|
__tablename__ = 'foo'
|
|
__table_args__ = {'mysql_engine':'InnoDB'}
|
|
id = Column('id', Integer, primary_key=True)
|
|
|
|
assert Foo.__table__.kwargs['mysql_engine'] == 'InnoDB'
|
|
|
|
class Bar(Base):
|
|
__tablename__ = 'bar'
|
|
__table_args__ = (ForeignKeyConstraint(['id'], ['foo.id']), {'mysql_engine':'InnoDB'})
|
|
id = Column('id', Integer, primary_key=True)
|
|
|
|
assert Bar.__table__.c.id.references(Foo.__table__.c.id)
|
|
assert Bar.__table__.kwargs['mysql_engine'] == 'InnoDB'
|
|
|
|
def test_expression(self):
|
|
class User(Base, ComparableEntity):
|
|
__tablename__ = 'users'
|
|
|
|
id = Column('id', Integer, primary_key=True)
|
|
name = Column('name', String(50))
|
|
addresses = relation("Address", backref="user")
|
|
|
|
class Address(Base, ComparableEntity):
|
|
__tablename__ = 'addresses'
|
|
|
|
id = Column('id', Integer, primary_key=True)
|
|
email = Column('email', String(50))
|
|
user_id = Column('user_id', Integer, ForeignKey('users.id'))
|
|
|
|
User.address_count = sa.orm.column_property(
|
|
sa.select([sa.func.count(Address.id)]).
|
|
where(Address.user_id == User.id).as_scalar())
|
|
|
|
Base.metadata.create_all()
|
|
|
|
u1 = User(name='u1', addresses=[
|
|
Address(email='one'),
|
|
Address(email='two'),
|
|
])
|
|
sess = create_session()
|
|
sess.save(u1)
|
|
sess.flush()
|
|
sess.clear()
|
|
|
|
eq_(sess.query(User).all(),
|
|
[User(name='u1', address_count=2, addresses=[
|
|
Address(email='one'),
|
|
Address(email='two')])])
|
|
|
|
def test_column(self):
|
|
class User(Base, ComparableEntity):
|
|
__tablename__ = 'users'
|
|
|
|
id = Column('id', Integer, primary_key=True)
|
|
name = Column('name', String(50))
|
|
|
|
User.a = Column('a', String(10))
|
|
User.b = Column(String(10))
|
|
|
|
Base.metadata.create_all()
|
|
|
|
u1 = User(name='u1', a='a', b='b')
|
|
eq_(u1.a, 'a')
|
|
eq_(User.a.get_history(u1), (['a'], [], []))
|
|
sess = create_session()
|
|
sess.save(u1)
|
|
sess.flush()
|
|
sess.clear()
|
|
|
|
eq_(sess.query(User).all(),
|
|
[User(name='u1', a='a', b='b')])
|
|
|
|
def test_column_properties(self):
|
|
class Address(Base, ComparableEntity):
|
|
__tablename__ = 'addresses'
|
|
id = Column(Integer, primary_key=True)
|
|
email = Column(String(50))
|
|
user_id = Column(Integer, ForeignKey('users.id'))
|
|
|
|
class User(Base, ComparableEntity):
|
|
__tablename__ = 'users'
|
|
|
|
id = Column('id', Integer, primary_key=True)
|
|
name = Column('name', String(50))
|
|
adr_count = sa.orm.column_property(
|
|
sa.select([sa.func.count(Address.id)], Address.user_id == id).
|
|
as_scalar())
|
|
addresses = relation(Address)
|
|
|
|
Base.metadata.create_all()
|
|
|
|
u1 = User(name='u1', addresses=[
|
|
Address(email='one'),
|
|
Address(email='two'),
|
|
])
|
|
sess = create_session()
|
|
sess.save(u1)
|
|
sess.flush()
|
|
sess.clear()
|
|
|
|
eq_(sess.query(User).all(),
|
|
[User(name='u1', adr_count=2, addresses=[
|
|
Address(email='one'),
|
|
Address(email='two')])])
|
|
|
|
def test_column_properties_2(self):
|
|
class Address(Base, ComparableEntity):
|
|
__tablename__ = 'addresses'
|
|
id = Column(Integer, primary_key=True)
|
|
email = Column(String(50))
|
|
user_id = Column(Integer, ForeignKey('users.id'))
|
|
|
|
class User(Base, ComparableEntity):
|
|
__tablename__ = 'users'
|
|
|
|
id = Column('id', Integer, primary_key=True)
|
|
name = Column('name', String(50))
|
|
# this is not "valid" but we want to test that Address.id doesnt
|
|
# get stuck into user's table
|
|
adr_count = Address.id
|
|
|
|
eq_(set(User.__table__.c.keys()), set(['id', 'name']))
|
|
eq_(set(Address.__table__.c.keys()), set(['id', 'email', 'user_id']))
|
|
|
|
def test_deferred(self):
|
|
class User(Base, ComparableEntity):
|
|
__tablename__ = 'users'
|
|
|
|
id = Column(Integer, primary_key=True)
|
|
name = sa.orm.deferred(Column(String(50)))
|
|
|
|
Base.metadata.create_all()
|
|
sess = create_session()
|
|
sess.save(User(name='u1'))
|
|
sess.flush()
|
|
sess.clear()
|
|
|
|
u1 = sess.query(User).filter(User.name == 'u1').one()
|
|
assert 'name' not in u1.__dict__
|
|
def go():
|
|
eq_(u1.name, 'u1')
|
|
self.assert_sql_count(testing.db, go, 1)
|
|
|
|
def test_synonym_inline(self):
|
|
class User(Base, ComparableEntity):
|
|
__tablename__ = 'users'
|
|
|
|
id = Column('id', Integer, primary_key=True)
|
|
_name = Column('name', String(50))
|
|
def _set_name(self, name):
|
|
self._name = "SOMENAME " + name
|
|
def _get_name(self):
|
|
return self._name
|
|
name = sa.orm.synonym('_name',
|
|
descriptor=property(_get_name, _set_name))
|
|
|
|
Base.metadata.create_all()
|
|
|
|
sess = create_session()
|
|
u1 = User(name='someuser')
|
|
eq_(u1.name, "SOMENAME someuser")
|
|
sess.save(u1)
|
|
sess.flush()
|
|
eq_(sess.query(User).filter(User.name == "SOMENAME someuser").one(), u1)
|
|
|
|
def test_synonym_added(self):
|
|
class User(Base, ComparableEntity):
|
|
__tablename__ = 'users'
|
|
|
|
id = Column('id', Integer, primary_key=True)
|
|
_name = Column('name', String(50))
|
|
def _set_name(self, name):
|
|
self._name = "SOMENAME " + name
|
|
def _get_name(self):
|
|
return self._name
|
|
name = property(_get_name, _set_name)
|
|
User.name = sa.orm.synonym('_name', descriptor=User.name)
|
|
|
|
Base.metadata.create_all()
|
|
|
|
sess = create_session()
|
|
u1 = User(name='someuser')
|
|
eq_(u1.name, "SOMENAME someuser")
|
|
sess.save(u1)
|
|
sess.flush()
|
|
eq_(sess.query(User).filter(User.name == "SOMENAME someuser").one(), u1)
|
|
|
|
def test_joined_inheritance(self):
|
|
class Company(Base, ComparableEntity):
|
|
__tablename__ = 'companies'
|
|
id = Column('id', Integer, primary_key=True)
|
|
name = Column('name', String(50))
|
|
employees = relation("Person")
|
|
|
|
class Person(Base, ComparableEntity):
|
|
__tablename__ = 'people'
|
|
id = Column('id', Integer, primary_key=True)
|
|
company_id = Column('company_id', Integer,
|
|
ForeignKey('companies.id'))
|
|
name = Column('name', String(50))
|
|
discriminator = Column('type', String(50))
|
|
__mapper_args__ = {'polymorphic_on':discriminator}
|
|
|
|
class Engineer(Person):
|
|
__tablename__ = 'engineers'
|
|
__mapper_args__ = {'polymorphic_identity':'engineer'}
|
|
id = Column('id', Integer, ForeignKey('people.id'), primary_key=True)
|
|
primary_language = Column('primary_language', String(50))
|
|
|
|
class Manager(Person):
|
|
__tablename__ = 'managers'
|
|
__mapper_args__ = {'polymorphic_identity':'manager'}
|
|
id = Column('id', Integer, ForeignKey('people.id'), primary_key=True)
|
|
golf_swing = Column('golf_swing', String(50))
|
|
|
|
Base.metadata.create_all()
|
|
|
|
sess = create_session()
|
|
c1 = Company(name="MegaCorp, Inc.", employees=[
|
|
Engineer(name="dilbert", primary_language="java"),
|
|
Engineer(name="wally", primary_language="c++"),
|
|
Manager(name="dogbert", golf_swing="fore!")
|
|
])
|
|
|
|
c2 = Company(name="Elbonia, Inc.", employees=[
|
|
Engineer(name="vlad", primary_language="cobol")
|
|
])
|
|
|
|
sess.save(c1)
|
|
sess.save(c2)
|
|
sess.flush()
|
|
sess.clear()
|
|
|
|
eq_((sess.query(Company).
|
|
filter(Company.employees.of_type(Engineer).
|
|
any(Engineer.primary_language == 'cobol')).first()),
|
|
c2)
|
|
|
|
# ensure that the Manager mapper was compiled
|
|
# with the Person id column as higher priority.
|
|
# this ensures that "id" will get loaded from the Person row
|
|
# and not the possibly non-present Manager row
|
|
assert Manager.id.property.columns == [Person.__table__.c.id, Manager.__table__.c.id]
|
|
|
|
# assert that the "id" column is available without a second load.
|
|
# this would be the symptom of the previous step not being correct.
|
|
sess.clear()
|
|
def go():
|
|
assert sess.query(Manager).filter(Manager.name=='dogbert').one().id
|
|
self.assert_sql_count(testing.db, go, 1)
|
|
sess.clear()
|
|
def go():
|
|
assert sess.query(Person).filter(Manager.name=='dogbert').one().id
|
|
self.assert_sql_count(testing.db, go, 1)
|
|
|
|
def test_inheritance_with_undefined_relation(self):
|
|
class Parent(Base):
|
|
__tablename__ = 'parent'
|
|
id = Column('id', Integer, primary_key=True)
|
|
tp = Column('type', String(50))
|
|
__mapper_args__ = dict(polymorphic_on = tp)
|
|
|
|
|
|
class Child1(Parent):
|
|
__tablename__ = 'child1'
|
|
id = Column('id', Integer, ForeignKey('parent.id'), primary_key=True)
|
|
related_child2 = Column('c2', Integer, ForeignKey('child2.id'))
|
|
__mapper_args__ = dict(polymorphic_identity = 'child1')
|
|
|
|
# no exception is raised by the ForeignKey to "child2" even though
|
|
# child2 doesn't exist yet
|
|
|
|
class Child2(Parent):
|
|
__tablename__ = 'child2'
|
|
id = Column('id', Integer, ForeignKey('parent.id'), primary_key=True)
|
|
related_child1 = Column('c1', Integer)
|
|
__mapper_args__ = dict(polymorphic_identity = 'child2')
|
|
|
|
sa.orm.compile_mappers() # no exceptions here
|
|
|
|
def test_reentrant_compile_via_foreignkey(self):
|
|
class User(Base, ComparableEntity):
|
|
__tablename__ = 'users'
|
|
|
|
id = Column('id', Integer, primary_key=True)
|
|
name = Column('name', String(50))
|
|
addresses = relation("Address", backref="user")
|
|
|
|
class Address(Base, ComparableEntity):
|
|
__tablename__ = 'addresses'
|
|
|
|
id = Column('id', Integer, primary_key=True)
|
|
email = Column('email', String(50))
|
|
user_id = Column('user_id', Integer, ForeignKey(User.id))
|
|
|
|
# this forces a re-entrant compile() due to the User.id within the
|
|
# ForeignKey
|
|
sa.orm.compile_mappers()
|
|
|
|
Base.metadata.create_all()
|
|
u1 = User(name='u1', addresses=[
|
|
Address(email='one'),
|
|
Address(email='two'),
|
|
])
|
|
sess = create_session()
|
|
sess.save(u1)
|
|
sess.flush()
|
|
sess.clear()
|
|
|
|
eq_(sess.query(User).all(), [User(name='u1', addresses=[
|
|
Address(email='one'),
|
|
Address(email='two'),
|
|
])])
|
|
|
|
def test_relation_reference(self):
|
|
class Address(Base, ComparableEntity):
|
|
__tablename__ = 'addresses'
|
|
|
|
id = Column('id', Integer, primary_key=True)
|
|
email = Column('email', String(50))
|
|
user_id = Column('user_id', Integer, ForeignKey('users.id'))
|
|
|
|
class User(Base, ComparableEntity):
|
|
__tablename__ = 'users'
|
|
|
|
id = Column('id', Integer, primary_key=True)
|
|
name = Column('name', String(50))
|
|
addresses = relation("Address", backref="user",
|
|
primaryjoin=id == Address.user_id)
|
|
|
|
User.address_count = sa.orm.column_property(
|
|
sa.select([sa.func.count(Address.id)]).
|
|
where(Address.user_id == User.id).as_scalar())
|
|
|
|
Base.metadata.create_all()
|
|
|
|
u1 = User(name='u1', addresses=[
|
|
Address(email='one'),
|
|
Address(email='two'),
|
|
])
|
|
sess = create_session()
|
|
sess.save(u1)
|
|
sess.flush()
|
|
sess.clear()
|
|
|
|
eq_(sess.query(User).all(),
|
|
[User(name='u1', address_count=2, addresses=[
|
|
Address(email='one'),
|
|
Address(email='two')])])
|
|
|
|
def test_single_inheritance(self):
|
|
class Company(Base, ComparableEntity):
|
|
__tablename__ = 'companies'
|
|
id = Column('id', Integer, primary_key=True)
|
|
name = Column('name', String(50))
|
|
employees = relation("Person")
|
|
|
|
class Person(Base, ComparableEntity):
|
|
__tablename__ = 'people'
|
|
id = Column('id', Integer, primary_key=True)
|
|
company_id = Column('company_id', Integer,
|
|
ForeignKey('companies.id'))
|
|
name = Column('name', String(50))
|
|
discriminator = Column('type', String(50))
|
|
primary_language = Column('primary_language', String(50))
|
|
golf_swing = Column('golf_swing', String(50))
|
|
__mapper_args__ = {'polymorphic_on':discriminator}
|
|
|
|
class Engineer(Person):
|
|
__mapper_args__ = {'polymorphic_identity':'engineer'}
|
|
|
|
class Manager(Person):
|
|
__mapper_args__ = {'polymorphic_identity':'manager'}
|
|
|
|
Base.metadata.create_all()
|
|
|
|
sess = create_session()
|
|
c1 = Company(name="MegaCorp, Inc.", employees=[
|
|
Engineer(name="dilbert", primary_language="java"),
|
|
Engineer(name="wally", primary_language="c++"),
|
|
Manager(name="dogbert", golf_swing="fore!")
|
|
])
|
|
|
|
c2 = Company(name="Elbonia, Inc.", employees=[
|
|
Engineer(name="vlad", primary_language="cobol")
|
|
])
|
|
|
|
sess.save(c1)
|
|
sess.save(c2)
|
|
sess.flush()
|
|
sess.clear()
|
|
|
|
eq_((sess.query(Person).
|
|
filter(Engineer.primary_language == 'cobol').first()),
|
|
Engineer(name='vlad'))
|
|
eq_((sess.query(Company).
|
|
filter(Company.employees.of_type(Engineer).
|
|
any(Engineer.primary_language == 'cobol')).first()),
|
|
c2)
|
|
|
|
def test_with_explicit_autoloaded(self):
|
|
meta = MetaData(testing.db)
|
|
t1 = Table('t1', meta,
|
|
Column('id', String(50), primary_key=True),
|
|
Column('data', String(50)))
|
|
meta.create_all()
|
|
try:
|
|
class MyObj(Base):
|
|
__table__ = Table('t1', Base.metadata, autoload=True)
|
|
|
|
sess = create_session()
|
|
m = MyObj(id="someid", data="somedata")
|
|
sess.save(m)
|
|
sess.flush()
|
|
|
|
eq_(t1.select().execute().fetchall(), [('someid', 'somedata')])
|
|
finally:
|
|
meta.drop_all()
|
|
|
|
|
|
class DeclarativeReflectionTest(testing.TestBase):
|
|
def setUpAll(self):
|
|
global reflection_metadata
|
|
reflection_metadata = MetaData(testing.db)
|
|
|
|
Table('users', reflection_metadata,
|
|
Column('id', Integer, primary_key=True),
|
|
Column('name', String(50)),
|
|
test_needs_fk=True)
|
|
Table('addresses', reflection_metadata,
|
|
Column('id', Integer, primary_key=True),
|
|
Column('email', String(50)),
|
|
Column('user_id', Integer, ForeignKey('users.id')),
|
|
test_needs_fk=True)
|
|
Table('imhandles', reflection_metadata,
|
|
Column('id', Integer, primary_key=True),
|
|
Column('user_id', Integer),
|
|
Column('network', String(50)),
|
|
Column('handle', String(50)),
|
|
test_needs_fk=True)
|
|
|
|
reflection_metadata.create_all()
|
|
|
|
def setUp(self):
|
|
global Base
|
|
Base = decl.declarative_base(testing.db)
|
|
|
|
def tearDown(self):
|
|
for t in reflection_metadata.table_iterator():
|
|
t.delete().execute()
|
|
|
|
def tearDownAll(self):
|
|
reflection_metadata.drop_all()
|
|
|
|
def test_basic(self):
|
|
meta = MetaData(testing.db)
|
|
|
|
class User(Base, ComparableEntity):
|
|
__tablename__ = 'users'
|
|
__autoload__ = True
|
|
addresses = relation("Address", backref="user")
|
|
|
|
class Address(Base, ComparableEntity):
|
|
__tablename__ = 'addresses'
|
|
__autoload__ = True
|
|
|
|
u1 = User(name='u1', addresses=[
|
|
Address(email='one'),
|
|
Address(email='two'),
|
|
])
|
|
sess = create_session()
|
|
sess.save(u1)
|
|
sess.flush()
|
|
sess.clear()
|
|
|
|
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):
|
|
meta = MetaData(testing.db)
|
|
|
|
class User(Base, ComparableEntity):
|
|
__tablename__ = 'users'
|
|
__autoload__ = True
|
|
nom = Column('name', String(50), key='nom')
|
|
addresses = relation("Address", backref="user")
|
|
|
|
class Address(Base, ComparableEntity):
|
|
__tablename__ = 'addresses'
|
|
__autoload__ = True
|
|
|
|
u1 = User(nom='u1', addresses=[
|
|
Address(email='one'),
|
|
Address(email='two'),
|
|
])
|
|
sess = create_session()
|
|
sess.save(u1)
|
|
sess.flush()
|
|
sess.clear()
|
|
|
|
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'))
|
|
|
|
self.assertRaises(TypeError, User, name='u3')
|
|
|
|
def test_supplied_fk(self):
|
|
meta = MetaData(testing.db)
|
|
|
|
class IMHandle(Base, ComparableEntity):
|
|
__tablename__ = 'imhandles'
|
|
__autoload__ = True
|
|
|
|
user_id = Column('user_id', Integer,
|
|
ForeignKey('users.id'))
|
|
class User(Base, ComparableEntity):
|
|
__tablename__ = 'users'
|
|
__autoload__ = True
|
|
handles = relation("IMHandle", backref="user")
|
|
|
|
u1 = User(name='u1', handles=[
|
|
IMHandle(network='blabber', handle='foo'),
|
|
IMHandle(network='lol', handle='zomg')
|
|
])
|
|
sess = create_session()
|
|
sess.save(u1)
|
|
sess.flush()
|
|
sess.clear()
|
|
|
|
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'))
|
|
|
|
def test_synonym_for(self):
|
|
class User(Base, ComparableEntity):
|
|
__tablename__ = 'users'
|
|
|
|
id = Column('id', Integer, primary_key=True)
|
|
name = Column('name', String(50))
|
|
|
|
@decl.synonym_for('name')
|
|
@property
|
|
def namesyn(self):
|
|
return self.name
|
|
|
|
Base.metadata.create_all()
|
|
|
|
sess = create_session()
|
|
u1 = User(name='someuser')
|
|
eq_(u1.name, "someuser")
|
|
eq_(u1.namesyn, 'someuser')
|
|
sess.save(u1)
|
|
sess.flush()
|
|
|
|
rt = sess.query(User).filter(User.namesyn == 'someuser').one()
|
|
eq_(rt, u1)
|
|
|
|
def test_comparable_using(self):
|
|
class NameComparator(sa.orm.PropComparator):
|
|
@property
|
|
def upperself(self):
|
|
cls = self.prop.parent.class_
|
|
col = getattr(cls, 'name')
|
|
return sa.func.upper(col)
|
|
|
|
def operate(self, op, other, **kw):
|
|
return op(self.upperself, other, **kw)
|
|
|
|
class User(Base, ComparableEntity):
|
|
__tablename__ = 'users'
|
|
|
|
id = Column('id', Integer, primary_key=True)
|
|
name = Column('name', String(50))
|
|
|
|
@decl.comparable_using(NameComparator)
|
|
@property
|
|
def uc_name(self):
|
|
return self.name is not None and self.name.upper() or None
|
|
|
|
Base.metadata.create_all()
|
|
|
|
sess = create_session()
|
|
u1 = User(name='someuser')
|
|
eq_(u1.name, "someuser", u1.name)
|
|
eq_(u1.uc_name, 'SOMEUSER', u1.uc_name)
|
|
sess.save(u1)
|
|
sess.flush()
|
|
sess.clear()
|
|
|
|
rt = sess.query(User).filter(User.uc_name == 'SOMEUSER').one()
|
|
eq_(rt, u1)
|
|
sess.clear()
|
|
|
|
rt = sess.query(User).filter(User.uc_name.startswith('SOMEUSE')).one()
|
|
eq_(rt, u1)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
testing.main()
|