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from sqlalchemy import and_
from sqlalchemy import exc
from sqlalchemy import or_
from sqlalchemy import select
from sqlalchemy import testing
from sqlalchemy.orm import with_polymorphic
from sqlalchemy.testing import eq_
from sqlalchemy.testing.fixtures import fixture_session
from ._poly_fixtures import _Polymorphic
from ._poly_fixtures import _PolymorphicAliasedJoins
from ._poly_fixtures import _PolymorphicFixtureBase
from ._poly_fixtures import _PolymorphicJoins
from ._poly_fixtures import _PolymorphicPolymorphic
from ._poly_fixtures import _PolymorphicUnions
from ._poly_fixtures import Boss
from ._poly_fixtures import Engineer
from ._poly_fixtures import Manager
from ._poly_fixtures import Person
class WithPolymorphicAPITest(_Polymorphic, _PolymorphicFixtureBase):
def test_no_use_flat_and_aliased(self):
sess = fixture_session()
subq = sess.query(Person).subquery()
testing.assert_raises_message(
exc.ArgumentError,
"the 'flat' and 'selectable' arguments cannot be passed "
"simultaneously to with_polymorphic()",
with_polymorphic,
Person,
[Engineer],
selectable=subq,
flat=True,
)
class _WithPolymorphicBase(_PolymorphicFixtureBase):
def test_join_base_to_sub(self):
sess = fixture_session()
pa = with_polymorphic(Person, [Engineer])
def go():
eq_(
sess.query(pa)
.filter(pa.Engineer.primary_language == "java")
.all(),
self._emps_wo_relationships_fixture()[0:1],
)
self.assert_sql_count(testing.db, go, 1)
@testing.combinations((True,), (False,), argnames="use_star")
def test_col_expression_base_plus_two_subs(self, use_star):
sess = fixture_session()
if use_star:
pa = with_polymorphic(Person, "*")
else:
pa = with_polymorphic(Person, [Engineer, Manager])
eq_(
sess.query(
pa.name, pa.Engineer.primary_language, pa.Manager.manager_name
)
.filter(
or_(
pa.Engineer.primary_language == "java",
pa.Manager.manager_name == "dogbert",
)
)
.order_by(pa.Engineer.type)
.all(),
[("dilbert", "java", None), ("dogbert", None, "dogbert")],
)
def test_orm_entity_w_gc(self):
"""test #6680"""
sess = fixture_session()
stmt = select(with_polymorphic(Person, "*"))
eq_(len(sess.execute(stmt).all()), 5)
def test_join_to_join_entities(self):
sess = fixture_session()
pa = with_polymorphic(Person, [Engineer])
pa_alias = with_polymorphic(Person, [Engineer], aliased=True)
eq_(
[
(p1.name, type(p1), p2.name, type(p2))
for (p1, p2) in sess.query(pa, pa_alias)
.join(
pa_alias,
or_(
pa.Engineer.primary_language
== pa_alias.Engineer.primary_language,
and_(
pa.Engineer.primary_language == None, # noqa
pa_alias.Engineer.primary_language == None,
pa.person_id > pa_alias.person_id,
),
),
)
.order_by(pa.name, pa_alias.name)
],
[
("dilbert", Engineer, "dilbert", Engineer),
("dogbert", Manager, "pointy haired boss", Boss),
("vlad", Engineer, "vlad", Engineer),
("wally", Engineer, "wally", Engineer),
],
)
def test_join_to_join_columns(self):
sess = fixture_session()
pa = with_polymorphic(Person, [Engineer])
pa_alias = with_polymorphic(Person, [Engineer], aliased=True)
eq_(
[
row
for row in sess.query(
pa.name,
pa.Engineer.primary_language,
pa_alias.name,
pa_alias.Engineer.primary_language,
)
.join(
pa_alias,
or_(
pa.Engineer.primary_language
== pa_alias.Engineer.primary_language,
and_(
pa.Engineer.primary_language == None, # noqa
pa_alias.Engineer.primary_language == None,
pa.person_id > pa_alias.person_id,
),
),
)
.order_by(pa.name, pa_alias.name)
],
[
("dilbert", "java", "dilbert", "java"),
("dogbert", None, "pointy haired boss", None),
("vlad", "cobol", "vlad", "cobol"),
("wally", "c++", "wally", "c++"),
],
)
class PolymorphicTest(_WithPolymorphicBase, _Polymorphic):
pass
class PolymorphicPolymorphicTest(
_WithPolymorphicBase, _PolymorphicPolymorphic
):
pass
class PolymorphicUnionsTest(_WithPolymorphicBase, _PolymorphicUnions):
pass
class PolymorphicAliasedJoinsTest(
_WithPolymorphicBase, _PolymorphicAliasedJoins
):
pass
class PolymorphicJoinsTest(_WithPolymorphicBase, _PolymorphicJoins):
pass
|
