mirror of
https://github.com/sqlalchemy/sqlalchemy.git
synced 2026-05-29 12:06:28 -04:00
Malaclypse The Younger
23585b842c
Added support for bound parameters, e.g. those normally set up
via :meth:`.Query.params`, to the :meth:`.baked.Result.count`
method. Previously, support for parameters were omitted. Pull request
courtesy Pat Deegan.
Change-Id: I8c33548cf2a483699767e459731694c8cadebff6
Pull-request: https://github.com/zzzeek/sqlalchemy/pull/350
(cherry picked from commit 74f6c21747)
1071 lines
31 KiB
Python
1071 lines
31 KiB
Python
from sqlalchemy.orm import Session, subqueryload, \
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mapper, relationship, lazyload, clear_mappers, backref
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from sqlalchemy.testing import eq_, is_, is_not_
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from sqlalchemy.testing import assert_raises, assert_raises_message
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from sqlalchemy import testing
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from test.orm import _fixtures
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from sqlalchemy.ext.baked import BakedQuery, baked_lazyload, BakedLazyLoader
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from sqlalchemy.ext import baked
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from sqlalchemy import bindparam, func, literal_column
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from sqlalchemy.orm import exc as orm_exc
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import itertools
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from sqlalchemy.testing import mock
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from sqlalchemy.testing.assertsql import CompiledSQL
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class BakedTest(_fixtures.FixtureTest):
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run_setup_mappers = 'once'
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run_inserts = 'once'
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run_deletes = None
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def setup(self):
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self.bakery = baked.bakery()
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class StateChangeTest(BakedTest):
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@classmethod
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def setup_mappers(cls):
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User = cls.classes.User
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mapper(User, cls.tables.users)
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def _assert_cache_key(self, key, elements):
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eq_(
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key,
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tuple(elem.__code__ for elem in elements)
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)
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def test_initial_key(self):
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User = self.classes.User
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session = Session()
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def l1(): return session.query(User)
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q1 = self.bakery(l1)
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self._assert_cache_key(
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q1._cache_key,
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[l1]
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)
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eq_(q1.steps, [l1])
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def test_inplace_add(self):
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User = self.classes.User
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session = Session()
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def l1(): return session.query(User)
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def l2(q): return q.filter(User.name == bindparam('name'))
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q1 = self.bakery(l1)
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self._assert_cache_key(
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q1._cache_key,
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[l1]
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)
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eq_(q1.steps, [l1])
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q2 = q1.add_criteria(l2)
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is_(q2, q1)
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self._assert_cache_key(
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q1._cache_key,
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[l1, l2]
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)
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eq_(q1.steps, [l1, l2])
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def test_inplace_add_operator(self):
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User = self.classes.User
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session = Session()
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def l1(): return session.query(User)
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def l2(q): return q.filter(User.name == bindparam('name'))
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q1 = self.bakery(l1)
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self._assert_cache_key(
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q1._cache_key,
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[l1]
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)
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q1 += l2
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self._assert_cache_key(
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q1._cache_key,
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[l1, l2]
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)
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def test_chained_add(self):
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User = self.classes.User
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session = Session()
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def l1(): return session.query(User)
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def l2(q): return q.filter(User.name == bindparam('name'))
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q1 = self.bakery(l1)
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q2 = q1.with_criteria(l2)
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is_not_(q2, q1)
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self._assert_cache_key(
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q1._cache_key,
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[l1]
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)
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self._assert_cache_key(
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q2._cache_key,
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[l1, l2]
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)
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def test_chained_add_operator(self):
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User = self.classes.User
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session = Session()
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def l1(): return session.query(User)
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def l2(q): return q.filter(User.name == bindparam('name'))
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q1 = self.bakery(l1)
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q2 = q1 + l2
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is_not_(q2, q1)
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self._assert_cache_key(
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q1._cache_key,
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[l1]
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)
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self._assert_cache_key(
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q2._cache_key,
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[l1, l2]
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)
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class LikeQueryTest(BakedTest):
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@classmethod
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def setup_mappers(cls):
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User = cls.classes.User
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mapper(User, cls.tables.users)
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def test_first_no_result(self):
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User = self.classes.User
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bq = self.bakery(lambda s: s.query(User))
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bq += lambda q: q.filter(User.name == 'asdf')
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eq_(
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bq(Session()).first(),
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None
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)
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def test_first_multiple_result(self):
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User = self.classes.User
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bq = self.bakery(lambda s: s.query(User.id))
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bq += lambda q: q.filter(User.name.like('%ed%')).order_by(User.id)
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eq_(
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bq(Session()).first(),
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(8, )
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)
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def test_one_or_none_no_result(self):
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User = self.classes.User
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bq = self.bakery(lambda s: s.query(User))
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bq += lambda q: q.filter(User.name == 'asdf')
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eq_(
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bq(Session()).one_or_none(),
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None
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)
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def test_one_or_none_result(self):
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User = self.classes.User
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bq = self.bakery(lambda s: s.query(User))
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bq += lambda q: q.filter(User.name == 'ed')
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u1 = bq(Session()).one_or_none()
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eq_(u1.name, 'ed')
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def test_one_or_none_multiple_result(self):
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User = self.classes.User
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bq = self.bakery(lambda s: s.query(User))
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bq += lambda q: q.filter(User.name.like('%ed%'))
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assert_raises_message(
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orm_exc.MultipleResultsFound,
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"Multiple rows were found for one_or_none()",
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bq(Session()).one_or_none
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)
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def test_one_no_result(self):
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User = self.classes.User
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bq = self.bakery(lambda s: s.query(User))
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bq += lambda q: q.filter(User.name == 'asdf')
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assert_raises_message(
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orm_exc.NoResultFound,
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"No row was found for one()",
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bq(Session()).one
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)
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def test_one_result(self):
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User = self.classes.User
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bq = self.bakery(lambda s: s.query(User))
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bq += lambda q: q.filter(User.name == 'ed')
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u1 = bq(Session()).one()
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eq_(u1.name, 'ed')
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def test_one_multiple_result(self):
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User = self.classes.User
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bq = self.bakery(lambda s: s.query(User))
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bq += lambda q: q.filter(User.name.like('%ed%'))
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assert_raises_message(
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orm_exc.MultipleResultsFound,
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"Multiple rows were found for one()",
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bq(Session()).one
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)
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def test_get(self):
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User = self.classes.User
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bq = self.bakery(lambda s: s.query(User))
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sess = Session()
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def go():
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u1 = bq(sess).get(7)
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eq_(u1.name, 'jack')
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self.assert_sql_count(testing.db, go, 1)
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u1 = sess.query(User).get(7) # noqa
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def go():
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u2 = bq(sess).get(7)
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eq_(u2.name, 'jack')
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self.assert_sql_count(testing.db, go, 0)
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def go():
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u2 = bq(sess).get(8)
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eq_(u2.name, 'ed')
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self.assert_sql_count(testing.db, go, 1)
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def test_scalar(self):
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User = self.classes.User
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bq = self.bakery(lambda s: s.query(User.id))
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sess = Session()
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bq += lambda q: q.filter(User.id == 7)
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eq_(
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bq(sess).scalar(), 7
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)
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def test_count(self):
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User = self.classes.User
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bq = self.bakery(lambda s: s.query(User))
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sess = Session()
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eq_(
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bq(sess).count(),
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4
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)
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bq += lambda q: q.filter(User.id.in_([8, 9]))
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eq_(
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bq(sess).count(), 2
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)
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# original query still works
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eq_(
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set([(u.id, u.name) for u in bq(sess).all()]),
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set([(8, 'ed'), (9, 'fred')])
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)
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def test_count_with_bindparams(self):
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User = self.classes.User
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bq = self.bakery(lambda s: s.query(User))
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sess = Session()
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eq_(
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bq(sess).count(),
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4
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)
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bq += lambda q: q.filter(User.name == bindparam("uname"))
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# calling with *args
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eq_(
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bq(sess).params(uname='fred').count(), 1
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)
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# with multiple params, the **kwargs will be used
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bq += lambda q: q.filter(User.id == bindparam("anid"))
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eq_(
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bq(sess).params(uname='fred', anid=9).count(), 1
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)
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eq_(
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# wrong id, so 0 results:
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bq(sess).params(uname='fred', anid=8).count(), 0
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)
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def test_get_pk_w_null(self):
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"""test the re-implementation of logic to do get with IS NULL."""
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class AddressUser(object):
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pass
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mapper(
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AddressUser,
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self.tables.users.outerjoin(self.tables.addresses),
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properties={
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"id": self.tables.users.c.id,
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"address_id": self.tables.addresses.c.id
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}
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)
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bq = self.bakery(lambda s: s.query(AddressUser))
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sess = Session()
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def go():
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u1 = bq(sess).get((10, None))
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eq_(u1.name, 'chuck')
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self.assert_sql_count(testing.db, go, 1)
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u1 = sess.query(AddressUser).get((10, None)) # noqa
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def go():
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u2 = bq(sess).get((10, None))
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eq_(u2.name, 'chuck')
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self.assert_sql_count(testing.db, go, 0)
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def test_get_includes_getclause(self):
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# test issue #3597
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User = self.classes.User
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bq = self.bakery(lambda s: s.query(User))
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for i in range(5):
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sess = Session()
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u1 = bq(sess).get(7)
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eq_(u1.name, 'jack')
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sess.close()
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eq_(len(bq._bakery), 2)
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# simulate race where mapper._get_clause
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# may be generated more than once
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from sqlalchemy import inspect
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del inspect(User).__dict__['_get_clause']
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for i in range(5):
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sess = Session()
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u1 = bq(sess).get(7)
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eq_(u1.name, 'jack')
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sess.close()
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eq_(len(bq._bakery), 4)
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class ResultTest(BakedTest):
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__backend__ = True
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@classmethod
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def setup_mappers(cls):
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User = cls.classes.User
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Address = cls.classes.Address
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Order = cls.classes.Order
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mapper(User, cls.tables.users, properties={
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"addresses": relationship(
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Address, order_by=cls.tables.addresses.c.id),
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"orders": relationship(
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Order, order_by=cls.tables.orders.c.id)
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})
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mapper(Address, cls.tables.addresses)
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mapper(Order, cls.tables.orders)
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def test_cachekeys_on_constructor(self):
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User = self.classes.User
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queue = [7, 8]
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def fn(s): return s.query(User.id).filter_by(id=queue.pop(0))
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bq1 = self.bakery(fn, 7)
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bq2 = self.bakery(fn, 8)
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for i in range(3):
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session = Session(autocommit=True)
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eq_(
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bq1(session).all(),
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[(7,)]
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)
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eq_(
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bq2(session).all(),
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[(8,)]
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)
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def test_no_steps(self):
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User = self.classes.User
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bq = self.bakery(
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lambda s: s.query(User.id, User.name).order_by(User.id))
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for i in range(3):
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session = Session(autocommit=True)
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eq_(
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bq(session).all(),
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[(7, 'jack'), (8, 'ed'), (9, 'fred'), (10, 'chuck')]
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)
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def test_different_limits(self):
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User = self.classes.User
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bq = self.bakery(
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lambda s: s.query(User.id, User.name).order_by(User.id))
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bq += lambda q: q.limit(bindparam('limit')).offset(bindparam('offset'))
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session = Session(autocommit=True)
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for i in range(4):
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for limit, offset, exp in [
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(2, 1, [(8, 'ed'), (9, 'fred')]),
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(3, 0, [(7, 'jack'), (8, 'ed'), (9, 'fred')]),
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(1, 2, [(9, 'fred')])
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]:
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eq_(
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bq(session).params(limit=limit, offset=offset).all(),
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exp
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)
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def test_spoiled_full_w_params(self):
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User = self.classes.User
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canary = mock.Mock()
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def fn1(s):
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canary.fn1()
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return s.query(User.id, User.name).order_by(User.id)
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def fn2(q):
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canary.fn2()
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return q.filter(User.id == bindparam('id'))
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def fn3(q):
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canary.fn3()
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return q
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for x in range(3):
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bq = self.bakery(fn1)
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bq += fn2
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sess = Session(autocommit=True)
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eq_(
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bq.spoil(full=True).add_criteria(fn3)(sess).params(id=7).all(),
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[(7, 'jack')]
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)
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eq_(
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canary.mock_calls,
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[mock.call.fn1(), mock.call.fn2(), mock.call.fn3(),
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mock.call.fn1(), mock.call.fn2(), mock.call.fn3(),
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mock.call.fn1(), mock.call.fn2(), mock.call.fn3()]
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)
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def test_spoiled_half_w_params(self):
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User = self.classes.User
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canary = mock.Mock()
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def fn1(s):
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canary.fn1()
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return s.query(User.id, User.name).order_by(User.id)
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def fn2(q):
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canary.fn2()
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return q.filter(User.id == bindparam('id'))
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def fn3(q):
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canary.fn3()
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return q
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bq = self.bakery(fn1)
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bq += fn2
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for x in range(3):
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bq = self.bakery(fn1)
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bq += fn2
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sess = Session(autocommit=True)
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eq_(
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bq.spoil().add_criteria(fn3)(sess).params(id=7).all(),
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[(7, 'jack')]
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)
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eq_(
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canary.mock_calls,
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[mock.call.fn1(), mock.call.fn2(),
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mock.call.fn3(), mock.call.fn3(), mock.call.fn3()]
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)
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def test_w_new_entities(self):
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"""Test that the query can have its entities modified in
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an arbitrary callable, and that this new entity list is preserved
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when the query is invoked.
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"""
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User = self.classes.User
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bq = self.bakery(
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lambda s: s.query(User.id, User.name))
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bq += lambda q: q.from_self().with_entities(
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func.count(User.id))
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for i in range(3):
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session = Session(autocommit=True)
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eq_(
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bq(session).all(),
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[(4, )]
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)
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def test_conditional_step(self):
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"""Test a large series of conditionals and assert that
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results remain correct between all of them within a series
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of loops.
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"""
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User = self.classes.User
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|
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base_bq = self.bakery(
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lambda s: s.query(User.id, User.name))
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base_bq += lambda q: q.order_by(User.id)
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for i in range(4):
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for cond1, cond2, cond3, cond4 in itertools.product(
|
|
*[(False, True) for j in range(4)]):
|
|
bq = base_bq._clone()
|
|
if cond1:
|
|
bq += lambda q: q.filter(User.name != 'jack')
|
|
if cond2:
|
|
bq += lambda q: q.join(User.addresses)
|
|
else:
|
|
bq += lambda q: q.outerjoin(User.addresses)
|
|
elif cond3:
|
|
bq += lambda q: q.filter(User.name.like('%ed%'))
|
|
else:
|
|
bq += lambda q: q.filter(User.name == 'jack')
|
|
|
|
if cond4:
|
|
bq += lambda q: q.from_self().with_entities(
|
|
func.count(User.id))
|
|
sess = Session(autocommit=True)
|
|
result = bq(sess).all()
|
|
if cond4:
|
|
if cond1:
|
|
if cond2:
|
|
eq_(result, [(4,)])
|
|
else:
|
|
eq_(result, [(5,)])
|
|
elif cond3:
|
|
eq_(result, [(2,)])
|
|
else:
|
|
eq_(result, [(1,)])
|
|
else:
|
|
if cond1:
|
|
if cond2:
|
|
eq_(
|
|
result,
|
|
[(8, 'ed'), (8, 'ed'), (8, 'ed'),
|
|
(9, 'fred')]
|
|
)
|
|
else:
|
|
eq_(
|
|
result,
|
|
[(8, 'ed'), (8, 'ed'), (8, 'ed'),
|
|
(9, 'fred'), (10, 'chuck')]
|
|
)
|
|
elif cond3:
|
|
eq_(result, [(8, 'ed'), (9, 'fred')])
|
|
else:
|
|
eq_(result, [(7, 'jack')])
|
|
|
|
sess.close()
|
|
|
|
def test_conditional_step_oneline(self):
|
|
User = self.classes.User
|
|
|
|
base_bq = self.bakery(
|
|
lambda s: s.query(User.id, User.name))
|
|
|
|
base_bq += lambda q: q.order_by(User.id)
|
|
|
|
for i in range(4):
|
|
for cond1 in (False, True):
|
|
bq = base_bq._clone()
|
|
|
|
# we were using (filename, firstlineno) as cache key,
|
|
# which fails for this kind of thing!
|
|
bq += (lambda q: q.filter(User.name != 'jack')) if cond1 else (lambda q: q.filter(User.name == 'jack')) # noqa
|
|
sess = Session(autocommit=True)
|
|
result = bq(sess).all()
|
|
|
|
if cond1:
|
|
eq_(result, [(8, u'ed'), (9, u'fred'), (10, u'chuck')])
|
|
else:
|
|
eq_(result, [(7, 'jack')])
|
|
|
|
sess.close()
|
|
|
|
def test_subquery_eagerloading(self):
|
|
User = self.classes.User
|
|
Address = self.classes.Address
|
|
Order = self.classes.Order
|
|
|
|
# Override the default bakery for one with a smaller size. This used to
|
|
# trigger a bug when unbaking subqueries.
|
|
self.bakery = baked.bakery(size=3)
|
|
base_bq = self.bakery(lambda s: s.query(User))
|
|
|
|
base_bq += lambda q: q.options(subqueryload(User.addresses),
|
|
subqueryload(User.orders))
|
|
base_bq += lambda q: q.order_by(User.id)
|
|
|
|
assert_result = [
|
|
User(id=7,
|
|
addresses=[Address(id=1, email_address='jack@bean.com')],
|
|
orders=[Order(id=1), Order(id=3), Order(id=5)]),
|
|
User(id=8, addresses=[
|
|
Address(id=2, email_address='ed@wood.com'),
|
|
Address(id=3, email_address='ed@bettyboop.com'),
|
|
Address(id=4, email_address='ed@lala.com'),
|
|
]),
|
|
User(id=9,
|
|
addresses=[Address(id=5)],
|
|
orders=[Order(id=2), Order(id=4)]),
|
|
User(id=10, addresses=[])
|
|
]
|
|
|
|
for i in range(4):
|
|
for cond1, cond2 in itertools.product(
|
|
*[(False, True) for j in range(2)]):
|
|
bq = base_bq._clone()
|
|
|
|
sess = Session()
|
|
|
|
if cond1:
|
|
bq += lambda q: q.filter(User.name == 'jack')
|
|
else:
|
|
bq += lambda q: q.filter(User.name.like('%ed%'))
|
|
|
|
if cond2:
|
|
ct = func.count(Address.id).label('count')
|
|
subq = sess.query(
|
|
ct,
|
|
Address.user_id).group_by(Address.user_id).\
|
|
having(ct > 2).subquery()
|
|
|
|
bq += lambda q: q.join(subq)
|
|
|
|
if cond2:
|
|
if cond1:
|
|
def go():
|
|
result = bq(sess).all()
|
|
eq_([], result)
|
|
self.assert_sql_count(testing.db, go, 1)
|
|
else:
|
|
def go():
|
|
result = bq(sess).all()
|
|
eq_(assert_result[1:2], result)
|
|
self.assert_sql_count(testing.db, go, 3)
|
|
else:
|
|
if cond1:
|
|
def go():
|
|
result = bq(sess).all()
|
|
eq_(assert_result[0:1], result)
|
|
self.assert_sql_count(testing.db, go, 3)
|
|
else:
|
|
def go():
|
|
result = bq(sess).all()
|
|
eq_(assert_result[1:3], result)
|
|
self.assert_sql_count(testing.db, go, 3)
|
|
|
|
sess.close()
|
|
|
|
|
|
class LazyLoaderTest(testing.AssertsCompiledSQL, BakedTest):
|
|
run_setup_mappers = 'each'
|
|
|
|
def _o2m_fixture(self, lazy="select", **kw):
|
|
User = self.classes.User
|
|
Address = self.classes.Address
|
|
|
|
mapper(User, self.tables.users, properties={
|
|
'addresses': relationship(
|
|
Address, order_by=self.tables.addresses.c.id,
|
|
lazy=lazy, **kw)
|
|
})
|
|
mapper(Address, self.tables.addresses)
|
|
return User, Address
|
|
|
|
def _m2o_fixture(self):
|
|
User = self.classes.User
|
|
Address = self.classes.Address
|
|
|
|
mapper(User, self.tables.users)
|
|
mapper(Address, self.tables.addresses, properties={
|
|
'user': relationship(User)
|
|
})
|
|
return User, Address
|
|
|
|
def test_strategy_lookup(self):
|
|
"""test that the lazy loader strategies aren't getting mixed up
|
|
with BakedLazyLoader as a subclass.
|
|
|
|
"""
|
|
User, Address = self._o2m_fixture()
|
|
|
|
ll = User.addresses.property._get_strategy((('lazy', 'select'),))
|
|
assert not isinstance(ll, BakedLazyLoader)
|
|
eq_(ll._strategy_keys, [(('lazy', 'select'),), (('lazy', True),)])
|
|
|
|
ll = User.addresses.property._get_strategy((('lazy', True),))
|
|
assert not isinstance(ll, BakedLazyLoader)
|
|
eq_(ll._strategy_keys, [(('lazy', 'select'),), (('lazy', True),)])
|
|
|
|
bl = User.addresses.property._get_strategy((('lazy', 'baked_select'),))
|
|
assert isinstance(bl, BakedLazyLoader)
|
|
eq_(bl._strategy_keys, [(('lazy', 'baked_select'),)])
|
|
|
|
def test_invocation_per_state(self):
|
|
"""test that BakedLazyLoader is getting invoked with the
|
|
baked_lazyload() loader.
|
|
|
|
"""
|
|
User, Address = self._o2m_fixture()
|
|
|
|
sess = Session()
|
|
q = sess.query(User)
|
|
|
|
with mock.patch.object(BakedLazyLoader, "_emit_lazyload") as el:
|
|
u1 = q.first()
|
|
u1.addresses
|
|
# not invoked
|
|
eq_(el.mock_calls, [])
|
|
|
|
sess = Session()
|
|
q = sess.query(User).options(baked_lazyload(User.addresses))
|
|
with mock.patch.object(BakedLazyLoader, "_emit_lazyload") as el:
|
|
u1 = q.first()
|
|
u1.addresses
|
|
# invoked
|
|
is_(
|
|
el.mock_calls[0][1][1],
|
|
u1._sa_instance_state
|
|
)
|
|
|
|
def test_invocation_per_mapper(self):
|
|
"""test that BakedLazyLoader is getting invoked with the
|
|
"baked_select" lazy setting.
|
|
|
|
"""
|
|
User, Address = self._o2m_fixture(lazy="baked_select")
|
|
|
|
sess = Session()
|
|
q = sess.query(User).options(lazyload(User.addresses))
|
|
|
|
with mock.patch.object(BakedLazyLoader, "_emit_lazyload") as el:
|
|
u1 = q.first()
|
|
u1.addresses
|
|
# not invoked
|
|
eq_(el.mock_calls, [])
|
|
|
|
sess = Session()
|
|
q = sess.query(User)
|
|
with mock.patch.object(BakedLazyLoader, "_emit_lazyload") as el:
|
|
u1 = q.first()
|
|
u1.addresses
|
|
# invoked
|
|
is_(
|
|
el.mock_calls[0][1][1],
|
|
u1._sa_instance_state
|
|
)
|
|
|
|
def test_systemwide_loaders_loadable_via_lazyloader(self):
|
|
from sqlalchemy.orm import configure_mappers
|
|
|
|
baked.bake_lazy_loaders()
|
|
try:
|
|
User, Address = self._o2m_fixture(lazy='joined')
|
|
|
|
configure_mappers()
|
|
|
|
is_(
|
|
User.addresses.property.
|
|
_get_strategy((('lazy', 'select'), )).__class__,
|
|
BakedLazyLoader
|
|
)
|
|
finally:
|
|
baked.unbake_lazy_loaders()
|
|
|
|
def test_invocation_systemwide_loaders(self):
|
|
baked.bake_lazy_loaders()
|
|
try:
|
|
User, Address = self._o2m_fixture()
|
|
|
|
sess = Session()
|
|
q = sess.query(User).options(lazyload(User.addresses))
|
|
with mock.patch.object(BakedLazyLoader, "_emit_lazyload") as el:
|
|
u1 = q.first()
|
|
u1.addresses
|
|
# invoked
|
|
is_(
|
|
el.mock_calls[0][1][1],
|
|
u1._sa_instance_state
|
|
)
|
|
finally:
|
|
baked.unbake_lazy_loaders()
|
|
|
|
clear_mappers()
|
|
User, Address = self._o2m_fixture()
|
|
sess = Session()
|
|
q = sess.query(User).options(lazyload(User.addresses))
|
|
|
|
with mock.patch.object(BakedLazyLoader, "_emit_lazyload") as el:
|
|
u1 = q.first()
|
|
u1.addresses
|
|
# not invoked
|
|
eq_(el.mock_calls, [])
|
|
|
|
def test_baked_lazy_loading_relationship_flag_true(self):
|
|
self._test_baked_lazy_loading_relationship_flag(True)
|
|
|
|
def test_baked_lazy_loading_relationship_flag_false(self):
|
|
self._test_baked_lazy_loading_relationship_flag(False)
|
|
|
|
def _test_baked_lazy_loading_relationship_flag(self, flag):
|
|
baked.bake_lazy_loaders()
|
|
try:
|
|
User, Address = self._o2m_fixture(bake_queries=flag)
|
|
|
|
sess = Session()
|
|
u1 = sess.query(User).first()
|
|
|
|
from sqlalchemy.orm import Query
|
|
|
|
canary = mock.Mock()
|
|
|
|
# I would think Mock can do this but apparently
|
|
# it cannot (wrap / autospec don't work together)
|
|
real_compile_context = Query._compile_context
|
|
|
|
def _my_compile_context(*arg, **kw):
|
|
if arg[0].column_descriptions[0]['entity'] is Address:
|
|
canary()
|
|
return real_compile_context(*arg, **kw)
|
|
|
|
with mock.patch.object(
|
|
Query,
|
|
"_compile_context",
|
|
_my_compile_context
|
|
):
|
|
u1.addresses
|
|
|
|
sess.expire(u1)
|
|
u1.addresses
|
|
finally:
|
|
baked.unbake_lazy_loaders()
|
|
|
|
if flag:
|
|
eq_(canary.call_count, 1)
|
|
else:
|
|
eq_(canary.call_count, 2)
|
|
|
|
def test_baked_lazy_loading_option_o2m(self):
|
|
User, Address = self._o2m_fixture()
|
|
self._test_baked_lazy_loading(set_option=True)
|
|
|
|
def test_baked_lazy_loading_mapped_o2m(self):
|
|
User, Address = self._o2m_fixture(lazy="baked_select")
|
|
self._test_baked_lazy_loading(set_option=False)
|
|
|
|
def _test_baked_lazy_loading(self, set_option):
|
|
User, Address = self.classes.User, self.classes.Address
|
|
|
|
base_bq = self.bakery(
|
|
lambda s: s.query(User))
|
|
|
|
if set_option:
|
|
base_bq += lambda q: q.options(baked_lazyload(User.addresses))
|
|
|
|
base_bq += lambda q: q.order_by(User.id)
|
|
|
|
assert_result = self.static.user_address_result
|
|
|
|
for i in range(4):
|
|
for cond1, cond2 in itertools.product(
|
|
*[(False, True) for j in range(2)]):
|
|
bq = base_bq._clone()
|
|
|
|
sess = Session()
|
|
|
|
if cond1:
|
|
bq += lambda q: q.filter(User.name == 'jack')
|
|
else:
|
|
bq += lambda q: q.filter(User.name.like('%ed%'))
|
|
|
|
if cond2:
|
|
ct = func.count(Address.id).label('count')
|
|
subq = sess.query(
|
|
ct,
|
|
Address.user_id).group_by(Address.user_id).\
|
|
having(ct > 2).subquery()
|
|
|
|
bq += lambda q: q.join(subq)
|
|
|
|
if cond2:
|
|
if cond1:
|
|
def go():
|
|
result = bq(sess).all()
|
|
eq_([], result)
|
|
self.assert_sql_count(testing.db, go, 1)
|
|
else:
|
|
def go():
|
|
result = bq(sess).all()
|
|
eq_(assert_result[1:2], result)
|
|
self.assert_sql_count(testing.db, go, 2)
|
|
else:
|
|
if cond1:
|
|
def go():
|
|
result = bq(sess).all()
|
|
eq_(assert_result[0:1], result)
|
|
self.assert_sql_count(testing.db, go, 2)
|
|
else:
|
|
def go():
|
|
result = bq(sess).all()
|
|
eq_(assert_result[1:3], result)
|
|
self.assert_sql_count(testing.db, go, 3)
|
|
|
|
sess.close()
|
|
|
|
def test_baked_lazy_loading_m2o(self):
|
|
User, Address = self._m2o_fixture()
|
|
|
|
base_bq = self.bakery(
|
|
lambda s: s.query(Address))
|
|
|
|
base_bq += lambda q: q.options(baked_lazyload(Address.user))
|
|
base_bq += lambda q: q.order_by(Address.id)
|
|
|
|
assert_result = self.static.address_user_result
|
|
|
|
for i in range(4):
|
|
for cond1 in (False, True):
|
|
bq = base_bq._clone()
|
|
|
|
sess = Session()
|
|
|
|
if cond1:
|
|
bq += lambda q: q.filter(
|
|
Address.email_address == 'jack@bean.com')
|
|
else:
|
|
bq += lambda q: q.filter(
|
|
Address.email_address.like('ed@%'))
|
|
|
|
if cond1:
|
|
def go():
|
|
result = bq(sess).all()
|
|
eq_(assert_result[0:1], result)
|
|
self.assert_sql_count(testing.db, go, 2)
|
|
else:
|
|
def go():
|
|
result = bq(sess).all()
|
|
eq_(assert_result[1:4], result)
|
|
self.assert_sql_count(testing.db, go, 2)
|
|
|
|
sess.close()
|
|
|
|
def test_useget_cancels_eager(self):
|
|
"""test that a one to many lazyload cancels the unnecessary
|
|
eager many-to-one join on the other side."""
|
|
|
|
User = self.classes.User
|
|
Address = self.classes.Address
|
|
|
|
mapper(User, self.tables.users)
|
|
mapper(Address, self.tables.addresses, properties={
|
|
'user': relationship(
|
|
User, lazy='joined',
|
|
backref=backref('addresses', lazy='baked_select')
|
|
)
|
|
})
|
|
|
|
sess = Session()
|
|
u1 = sess.query(User).filter(User.id == 8).one()
|
|
|
|
def go():
|
|
eq_(u1.addresses[0].user, u1)
|
|
self.assert_sql_execution(
|
|
testing.db, go,
|
|
CompiledSQL(
|
|
"SELECT addresses.id AS addresses_id, addresses.user_id AS "
|
|
"addresses_user_id, addresses.email_address AS "
|
|
"addresses_email_address FROM addresses WHERE :param_1 = "
|
|
"addresses.user_id",
|
|
{'param_1': 8})
|
|
)
|
|
|
|
def test_useget_cancels_eager_propagated_present(self):
|
|
"""test that a one to many lazyload cancels the unnecessary
|
|
eager many-to-one join on the other side, even when a propagated
|
|
option is present."""
|
|
|
|
User = self.classes.User
|
|
Address = self.classes.Address
|
|
|
|
mapper(User, self.tables.users)
|
|
mapper(Address, self.tables.addresses, properties={
|
|
'user': relationship(
|
|
User, lazy='joined',
|
|
backref=backref('addresses', lazy='baked_select')
|
|
)
|
|
})
|
|
|
|
from sqlalchemy.orm.interfaces import MapperOption
|
|
|
|
class MyBogusOption(MapperOption):
|
|
propagate_to_loaders = True
|
|
|
|
sess = Session()
|
|
u1 = sess.query(User).options(MyBogusOption()).filter(User.id == 8) \
|
|
.one()
|
|
|
|
def go():
|
|
eq_(u1.addresses[0].user, u1)
|
|
self.assert_sql_execution(
|
|
testing.db, go,
|
|
CompiledSQL(
|
|
"SELECT addresses.id AS addresses_id, addresses.user_id AS "
|
|
"addresses_user_id, addresses.email_address AS "
|
|
"addresses_email_address FROM addresses WHERE :param_1 = "
|
|
"addresses.user_id",
|
|
{'param_1': 8})
|
|
)
|
|
|
|
# additional tests:
|
|
# 1. m2m w lazyload
|
|
# 2. o2m lazyload where m2o backrefs have an eager load, test
|
|
# that eager load is canceled out
|
|
# 3. uselist = False, uselist=False assertion
|