mirror of
https://github.com/sqlalchemy/sqlalchemy.git
synced 2026-06-01 21:38:55 -04:00
Mike Bayer
c6bceb7775
- converted all eager to joined in examples - fixed beaker/advanced.py to reference RelationshipCache
1263 lines
41 KiB
Python
1263 lines
41 KiB
Python
import warnings
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from sqlalchemy.test.testing import eq_, assert_raises, assert_raises_message
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from sqlalchemy import *
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from sqlalchemy import exc as sa_exc, util
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from sqlalchemy.orm import *
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from sqlalchemy.orm import exc as orm_exc
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from sqlalchemy.test import testing, engines
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from sqlalchemy.util import function_named
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from test.orm import _base, _fixtures
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from sqlalchemy.test.schema import Table, Column
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class O2MTest(_base.MappedTest):
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"""deals with inheritance and one-to-many relationships"""
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@classmethod
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def define_tables(cls, metadata):
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global foo, bar, blub
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foo = Table('foo', metadata,
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Column('id', Integer, primary_key=True, test_needs_autoincrement=True),
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Column('data', String(20)))
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bar = Table('bar', metadata,
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Column('id', Integer, ForeignKey('foo.id'), primary_key=True),
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Column('data', String(20)))
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blub = Table('blub', metadata,
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Column('id', Integer, ForeignKey('bar.id'), primary_key=True),
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Column('foo_id', Integer, ForeignKey('foo.id'), nullable=False),
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Column('data', String(20)))
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def test_basic(self):
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class Foo(object):
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def __init__(self, data=None):
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self.data = data
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def __repr__(self):
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return "Foo id %d, data %s" % (self.id, self.data)
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mapper(Foo, foo)
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class Bar(Foo):
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def __repr__(self):
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return "Bar id %d, data %s" % (self.id, self.data)
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mapper(Bar, bar, inherits=Foo)
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class Blub(Bar):
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def __repr__(self):
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return "Blub id %d, data %s" % (self.id, self.data)
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mapper(Blub, blub, inherits=Bar, properties={
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'parent_foo':relationship(Foo)
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})
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sess = create_session()
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b1 = Blub("blub #1")
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b2 = Blub("blub #2")
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f = Foo("foo #1")
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sess.add(b1)
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sess.add(b2)
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sess.add(f)
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b1.parent_foo = f
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b2.parent_foo = f
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sess.flush()
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compare = ','.join([repr(b1), repr(b2), repr(b1.parent_foo), repr(b2.parent_foo)])
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sess.expunge_all()
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l = sess.query(Blub).all()
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result = ','.join([repr(l[0]), repr(l[1]), repr(l[0].parent_foo), repr(l[1].parent_foo)])
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print compare
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print result
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self.assert_(compare == result)
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self.assert_(l[0].parent_foo.data == 'foo #1' and l[1].parent_foo.data == 'foo #1')
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class FalseDiscriminatorTest(_base.MappedTest):
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@classmethod
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def define_tables(cls, metadata):
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global t1
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t1 = Table('t1', metadata,
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Column('id', Integer, primary_key=True, test_needs_autoincrement=True),
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Column('type', Boolean, nullable=False))
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def test_false_on_sub(self):
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class Foo(object):pass
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class Bar(Foo):pass
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mapper(Foo, t1, polymorphic_on=t1.c.type, polymorphic_identity=True)
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mapper(Bar, inherits=Foo, polymorphic_identity=False)
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sess = create_session()
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b1 = Bar()
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sess.add(b1)
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sess.flush()
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assert b1.type is False
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sess.expunge_all()
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assert isinstance(sess.query(Foo).one(), Bar)
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def test_false_on_base(self):
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class Ding(object):pass
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class Bat(Ding):pass
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mapper(Ding, t1, polymorphic_on=t1.c.type, polymorphic_identity=False)
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mapper(Bat, inherits=Ding, polymorphic_identity=True)
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sess = create_session()
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d1 = Ding()
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sess.add(d1)
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sess.flush()
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assert d1.type is False
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sess.expunge_all()
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assert sess.query(Ding).one() is not None
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class PolymorphicSynonymTest(_base.MappedTest):
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@classmethod
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def define_tables(cls, metadata):
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global t1, t2
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t1 = Table('t1', metadata,
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Column('id', Integer, primary_key=True, test_needs_autoincrement=True),
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Column('type', String(10), nullable=False),
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Column('info', String(255)))
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t2 = Table('t2', metadata,
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Column('id', Integer, ForeignKey('t1.id'), primary_key=True),
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Column('data', String(10), nullable=False))
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def test_polymorphic_synonym(self):
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class T1(_fixtures.Base):
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def info(self):
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return "THE INFO IS:" + self._info
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def _set_info(self, x):
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self._info = x
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info = property(info, _set_info)
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class T2(T1):pass
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mapper(T1, t1, polymorphic_on=t1.c.type, polymorphic_identity='t1', properties={
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'info':synonym('_info', map_column=True)
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})
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mapper(T2, t2, inherits=T1, polymorphic_identity='t2')
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sess = create_session()
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at1 = T1(info='at1')
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at2 = T2(info='at2', data='t2 data')
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sess.add(at1)
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sess.add(at2)
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sess.flush()
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sess.expunge_all()
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eq_(sess.query(T2).filter(T2.info=='at2').one(), at2)
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eq_(at2.info, "THE INFO IS:at2")
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class CascadeTest(_base.MappedTest):
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"""that cascades on polymorphic relationships continue
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cascading along the path of the instance's mapper, not
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the base mapper."""
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@classmethod
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def define_tables(cls, metadata):
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global t1, t2, t3, t4
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t1= Table('t1', metadata,
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Column('id', Integer, primary_key=True, test_needs_autoincrement=True),
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Column('data', String(30))
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)
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t2 = Table('t2', metadata,
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Column('id', Integer, primary_key=True, test_needs_autoincrement=True),
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Column('t1id', Integer, ForeignKey('t1.id')),
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Column('type', String(30)),
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Column('data', String(30))
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)
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t3 = Table('t3', metadata,
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Column('id', Integer, ForeignKey('t2.id'), primary_key=True),
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Column('moredata', String(30)))
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t4 = Table('t4', metadata,
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Column('id', Integer, primary_key=True, test_needs_autoincrement=True),
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Column('t3id', Integer, ForeignKey('t3.id')),
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Column('data', String(30)))
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def test_cascade(self):
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class T1(_fixtures.Base):
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pass
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class T2(_fixtures.Base):
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pass
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class T3(T2):
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pass
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class T4(_fixtures.Base):
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pass
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mapper(T1, t1, properties={
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't2s':relationship(T2, cascade="all")
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})
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mapper(T2, t2, polymorphic_on=t2.c.type, polymorphic_identity='t2')
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mapper(T3, t3, inherits=T2, polymorphic_identity='t3', properties={
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't4s':relationship(T4, cascade="all")
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})
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mapper(T4, t4)
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sess = create_session()
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t1_1 = T1(data='t1')
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t3_1 = T3(data ='t3', moredata='t3')
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t2_1 = T2(data='t2')
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t1_1.t2s.append(t2_1)
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t1_1.t2s.append(t3_1)
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t4_1 = T4(data='t4')
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t3_1.t4s.append(t4_1)
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sess.add(t1_1)
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assert t4_1 in sess.new
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sess.flush()
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sess.delete(t1_1)
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assert t4_1 in sess.deleted
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sess.flush()
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class M2OUseGetTest(_base.MappedTest):
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@classmethod
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def define_tables(cls, metadata):
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Table('base', metadata,
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Column('id', Integer, primary_key=True, test_needs_autoincrement=True),
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Column('type', String(30))
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)
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Table('sub', metadata,
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Column('id', Integer, ForeignKey('base.id'), primary_key=True),
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)
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Table('related', metadata,
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Column('id', Integer, primary_key=True, test_needs_autoincrement=True),
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Column('sub_id', Integer, ForeignKey('sub.id')),
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)
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@testing.resolve_artifact_names
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def test_use_get(self):
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# test [ticket:1186]
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class Base(_base.BasicEntity):
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pass
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class Sub(Base):
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pass
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class Related(Base):
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pass
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mapper(Base, base, polymorphic_on=base.c.type, polymorphic_identity='b')
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mapper(Sub, sub, inherits=Base, polymorphic_identity='s')
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mapper(Related, related, properties={
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# previously, this was needed for the comparison to occur:
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# the 'primaryjoin' looks just like "Sub"'s "get" clause (based on the Base id),
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# and foreign_keys since that join condition doesn't actually have any fks in it
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#'sub':relationship(Sub, primaryjoin=base.c.id==related.c.sub_id, foreign_keys=related.c.sub_id)
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# now we can use this:
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'sub':relationship(Sub)
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})
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assert class_mapper(Related).get_property('sub').strategy.use_get
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sess = create_session()
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s1 = Sub()
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r1 = Related(sub=s1)
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sess.add(r1)
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sess.flush()
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sess.expunge_all()
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r1 = sess.query(Related).first()
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s1 = sess.query(Sub).first()
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def go():
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assert r1.sub
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self.assert_sql_count(testing.db, go, 0)
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class GetTest(_base.MappedTest):
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@classmethod
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def define_tables(cls, metadata):
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global foo, bar, blub
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foo = Table('foo', metadata,
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Column('id', Integer, primary_key=True, test_needs_autoincrement=True),
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Column('type', String(30)),
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Column('data', String(20)))
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bar = Table('bar', metadata,
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Column('id', Integer, ForeignKey('foo.id'), primary_key=True),
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Column('data', String(20)))
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blub = Table('blub', metadata,
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Column('id', Integer, primary_key=True, test_needs_autoincrement=True),
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Column('foo_id', Integer, ForeignKey('foo.id')),
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Column('bar_id', Integer, ForeignKey('bar.id')),
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Column('data', String(20)))
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@classmethod
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def setup_classes(cls):
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class Foo(_base.BasicEntity):
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pass
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class Bar(Foo):
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pass
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class Blub(Bar):
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pass
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def test_get_polymorphic(self):
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self._do_get_test(True)
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def test_get_nonpolymorphic(self):
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self._do_get_test(False)
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@testing.resolve_artifact_names
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def _do_get_test(self, polymorphic):
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if polymorphic:
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mapper(Foo, foo, polymorphic_on=foo.c.type, polymorphic_identity='foo')
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mapper(Bar, bar, inherits=Foo, polymorphic_identity='bar')
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mapper(Blub, blub, inherits=Bar, polymorphic_identity='blub')
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else:
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mapper(Foo, foo)
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mapper(Bar, bar, inherits=Foo)
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mapper(Blub, blub, inherits=Bar)
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sess = create_session()
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f = Foo()
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b = Bar()
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bl = Blub()
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sess.add(f)
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sess.add(b)
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sess.add(bl)
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sess.flush()
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if polymorphic:
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def go():
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assert sess.query(Foo).get(f.id) is f
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assert sess.query(Foo).get(b.id) is b
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assert sess.query(Foo).get(bl.id) is bl
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assert sess.query(Bar).get(b.id) is b
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assert sess.query(Bar).get(bl.id) is bl
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assert sess.query(Blub).get(bl.id) is bl
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# test class mismatches - item is present
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# in the identity map but we requested a subclass
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assert sess.query(Blub).get(f.id) is None
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assert sess.query(Blub).get(b.id) is None
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assert sess.query(Bar).get(f.id) is None
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self.assert_sql_count(testing.db, go, 0)
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else:
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# this is testing the 'wrong' behavior of using get()
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# polymorphically with mappers that are not configured to be
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# polymorphic. the important part being that get() always
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# returns an instance of the query's type.
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def go():
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assert sess.query(Foo).get(f.id) is f
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bb = sess.query(Foo).get(b.id)
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assert isinstance(b, Foo) and bb.id==b.id
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bll = sess.query(Foo).get(bl.id)
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assert isinstance(bll, Foo) and bll.id==bl.id
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assert sess.query(Bar).get(b.id) is b
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bll = sess.query(Bar).get(bl.id)
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assert isinstance(bll, Bar) and bll.id == bl.id
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assert sess.query(Blub).get(bl.id) is bl
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self.assert_sql_count(testing.db, go, 3)
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class EagerLazyTest(_base.MappedTest):
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"""tests eager load/lazy load of child items off inheritance mappers, tests that
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LazyLoader constructs the right query condition."""
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@classmethod
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def define_tables(cls, metadata):
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global foo, bar, bar_foo
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foo = Table('foo', metadata,
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Column('id', Integer, primary_key=True, test_needs_autoincrement=True),
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Column('data', String(30)))
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bar = Table('bar', metadata,
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Column('id', Integer, ForeignKey('foo.id'), primary_key=True),
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Column('data', String(30)))
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bar_foo = Table('bar_foo', metadata,
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Column('bar_id', Integer, ForeignKey('bar.id')),
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Column('foo_id', Integer, ForeignKey('foo.id'))
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)
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@testing.fails_on('maxdb', 'FIXME: unknown')
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def test_basic(self):
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class Foo(object): pass
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class Bar(Foo): pass
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foos = mapper(Foo, foo)
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bars = mapper(Bar, bar, inherits=foos)
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bars.add_property('lazy', relationship(foos, bar_foo, lazy='select'))
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bars.add_property('eager', relationship(foos, bar_foo, lazy='joined'))
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foo.insert().execute(data='foo1')
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bar.insert().execute(id=1, data='bar1')
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foo.insert().execute(data='foo2')
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bar.insert().execute(id=2, data='bar2')
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foo.insert().execute(data='foo3') #3
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foo.insert().execute(data='foo4') #4
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bar_foo.insert().execute(bar_id=1, foo_id=3)
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bar_foo.insert().execute(bar_id=2, foo_id=4)
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sess = create_session()
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q = sess.query(Bar)
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self.assert_(len(q.first().lazy) == 1)
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self.assert_(len(q.first().eager) == 1)
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class EagerTargetingTest(_base.MappedTest):
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"""test a scenario where joined table inheritance might be
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confused as an eagerly loaded joined table."""
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@classmethod
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def define_tables(cls, metadata):
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Table('a_table', metadata,
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Column('id', Integer, primary_key=True),
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Column('name', String(50)),
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Column('type', String(30), nullable=False),
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Column('parent_id', Integer, ForeignKey('a_table.id'))
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)
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Table('b_table', metadata,
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Column('id', Integer, ForeignKey('a_table.id'), primary_key=True),
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Column('b_data', String(50)),
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)
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@testing.resolve_artifact_names
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def test_adapt_stringency(self):
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class A(_base.ComparableEntity):
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pass
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class B(A):
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pass
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mapper(A, a_table, polymorphic_on=a_table.c.type, polymorphic_identity='A',
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properties={
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'children': relationship(A, order_by=a_table.c.name)
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})
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mapper(B, b_table, inherits=A, polymorphic_identity='B', properties={
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'b_derived':column_property(b_table.c.b_data + "DATA")
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})
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sess=create_session()
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b1=B(id=1, name='b1',b_data='i')
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sess.add(b1)
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sess.flush()
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b2=B(id=2, name='b2', b_data='l', parent_id=1)
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sess.add(b2)
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sess.flush()
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bid=b1.id
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sess.expunge_all()
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node = sess.query(B).filter(B.id==bid).all()[0]
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eq_(node, B(id=1, name='b1',b_data='i'))
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eq_(node.children[0], B(id=2, name='b2',b_data='l'))
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sess.expunge_all()
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node = sess.query(B).options(joinedload(B.children)).filter(B.id==bid).all()[0]
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eq_(node, B(id=1, name='b1',b_data='i'))
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eq_(node.children[0], B(id=2, name='b2',b_data='l'))
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class FlushTest(_base.MappedTest):
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"""test dependency sorting among inheriting mappers"""
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@classmethod
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def define_tables(cls, metadata):
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Table('users', metadata,
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Column('id', Integer, primary_key=True, test_needs_autoincrement=True),
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Column('email', String(128)),
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Column('password', String(16)),
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)
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Table('roles', metadata,
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Column('id', Integer, primary_key=True, test_needs_autoincrement=True),
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Column('description', String(32))
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)
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Table('user_roles', metadata,
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Column('user_id', Integer, ForeignKey('users.id'), primary_key=True),
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Column('role_id', Integer, ForeignKey('roles.id'), primary_key=True)
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)
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Table('admins', metadata,
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Column('admin_id', Integer, primary_key=True, test_needs_autoincrement=True),
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Column('user_id', Integer, ForeignKey('users.id'))
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)
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|
|
@testing.resolve_artifact_names
|
|
def test_one(self):
|
|
class User(object):pass
|
|
class Role(object):pass
|
|
class Admin(User):pass
|
|
role_mapper = mapper(Role, roles)
|
|
user_mapper = mapper(User, users, properties = {
|
|
'roles' : relationship(Role, secondary=user_roles, lazy='joined')
|
|
}
|
|
)
|
|
admin_mapper = mapper(Admin, admins, inherits=user_mapper)
|
|
sess = create_session()
|
|
adminrole = Role()
|
|
sess.add(adminrole)
|
|
sess.flush()
|
|
|
|
# create an Admin, and append a Role. the dependency processors
|
|
# corresponding to the "roles" attribute for the Admin mapper and the User mapper
|
|
# have to ensure that two dependency processors dont fire off and insert the
|
|
# many to many row twice.
|
|
a = Admin()
|
|
a.roles.append(adminrole)
|
|
a.password = 'admin'
|
|
sess.add(a)
|
|
sess.flush()
|
|
|
|
assert user_roles.count().scalar() == 1
|
|
|
|
@testing.resolve_artifact_names
|
|
def test_two(self):
|
|
class User(object):
|
|
def __init__(self, email=None, password=None):
|
|
self.email = email
|
|
self.password = password
|
|
|
|
class Role(object):
|
|
def __init__(self, description=None):
|
|
self.description = description
|
|
|
|
class Admin(User):pass
|
|
|
|
role_mapper = mapper(Role, roles)
|
|
user_mapper = mapper(User, users, properties = {
|
|
'roles' : relationship(Role, secondary=user_roles, lazy='joined')
|
|
}
|
|
)
|
|
|
|
admin_mapper = mapper(Admin, admins, inherits=user_mapper)
|
|
|
|
# create roles
|
|
adminrole = Role('admin')
|
|
|
|
sess = create_session()
|
|
sess.add(adminrole)
|
|
sess.flush()
|
|
|
|
# create admin user
|
|
a = Admin(email='tim', password='admin')
|
|
a.roles.append(adminrole)
|
|
sess.add(a)
|
|
sess.flush()
|
|
|
|
a.password = 'sadmin'
|
|
sess.flush()
|
|
assert user_roles.count().scalar() == 1
|
|
|
|
class VersioningTest(_base.MappedTest):
|
|
@classmethod
|
|
def define_tables(cls, metadata):
|
|
Table('base', metadata,
|
|
Column('id', Integer, primary_key=True, test_needs_autoincrement=True),
|
|
Column('version_id', Integer, nullable=False),
|
|
Column('value', String(40)),
|
|
Column('discriminator', Integer, nullable=False)
|
|
)
|
|
Table('subtable', metadata,
|
|
Column('id', None, ForeignKey('base.id'), primary_key=True),
|
|
Column('subdata', String(50))
|
|
)
|
|
Table('stuff', metadata,
|
|
Column('id', Integer, primary_key=True, test_needs_autoincrement=True),
|
|
Column('parent', Integer, ForeignKey('base.id'))
|
|
)
|
|
|
|
@testing.emits_warning(r".*updated rowcount")
|
|
@engines.close_open_connections
|
|
@testing.resolve_artifact_names
|
|
def test_save_update(self):
|
|
class Base(_fixtures.Base):
|
|
pass
|
|
class Sub(Base):
|
|
pass
|
|
class Stuff(Base):
|
|
pass
|
|
mapper(Stuff, stuff)
|
|
mapper(Base, base,
|
|
polymorphic_on=base.c.discriminator,
|
|
version_id_col=base.c.version_id,
|
|
polymorphic_identity=1, properties={
|
|
'stuff':relationship(Stuff)
|
|
})
|
|
mapper(Sub, subtable, inherits=Base, polymorphic_identity=2)
|
|
|
|
sess = create_session()
|
|
|
|
b1 = Base(value='b1')
|
|
s1 = Sub(value='sub1', subdata='some subdata')
|
|
sess.add(b1)
|
|
sess.add(s1)
|
|
|
|
sess.flush()
|
|
|
|
sess2 = create_session()
|
|
s2 = sess2.query(Base).get(s1.id)
|
|
s2.subdata = 'sess2 subdata'
|
|
|
|
s1.subdata = 'sess1 subdata'
|
|
|
|
sess.flush()
|
|
|
|
assert_raises(orm_exc.ConcurrentModificationError,
|
|
sess2.query(Base).with_lockmode('read').get,
|
|
s1.id)
|
|
|
|
if not testing.db.dialect.supports_sane_rowcount:
|
|
sess2.flush()
|
|
else:
|
|
assert_raises(orm_exc.ConcurrentModificationError, sess2.flush)
|
|
|
|
sess2.refresh(s2)
|
|
if testing.db.dialect.supports_sane_rowcount:
|
|
assert s2.subdata == 'sess1 subdata'
|
|
s2.subdata = 'sess2 subdata'
|
|
sess2.flush()
|
|
|
|
@testing.emits_warning(r".*updated rowcount")
|
|
@testing.resolve_artifact_names
|
|
def test_delete(self):
|
|
class Base(_fixtures.Base):
|
|
pass
|
|
class Sub(Base):
|
|
pass
|
|
|
|
mapper(Base, base,
|
|
polymorphic_on=base.c.discriminator,
|
|
version_id_col=base.c.version_id, polymorphic_identity=1)
|
|
mapper(Sub, subtable, inherits=Base, polymorphic_identity=2)
|
|
|
|
sess = create_session()
|
|
|
|
b1 = Base(value='b1')
|
|
s1 = Sub(value='sub1', subdata='some subdata')
|
|
s2 = Sub(value='sub2', subdata='some other subdata')
|
|
sess.add(b1)
|
|
sess.add(s1)
|
|
sess.add(s2)
|
|
|
|
sess.flush()
|
|
|
|
sess2 = create_session()
|
|
s3 = sess2.query(Base).get(s1.id)
|
|
sess2.delete(s3)
|
|
sess2.flush()
|
|
|
|
s2.subdata = 'some new subdata'
|
|
sess.flush()
|
|
|
|
try:
|
|
s1.subdata = 'some new subdata'
|
|
sess.flush()
|
|
assert not testing.db.dialect.supports_sane_rowcount
|
|
except orm_exc.ConcurrentModificationError, e:
|
|
assert True
|
|
|
|
class DistinctPKTest(_base.MappedTest):
|
|
"""test the construction of mapper.primary_key when an inheriting relationship
|
|
joins on a column other than primary key column."""
|
|
|
|
run_inserts = 'once'
|
|
run_deletes = None
|
|
|
|
@classmethod
|
|
def define_tables(cls, metadata):
|
|
global person_table, employee_table, Person, Employee
|
|
|
|
person_table = Table("persons", metadata,
|
|
Column("id", Integer, primary_key=True, test_needs_autoincrement=True),
|
|
Column("name", String(80)),
|
|
)
|
|
|
|
employee_table = Table("employees", metadata,
|
|
Column("id", Integer, primary_key=True, test_needs_autoincrement=True),
|
|
Column("salary", Integer),
|
|
Column("person_id", Integer, ForeignKey("persons.id")),
|
|
)
|
|
|
|
class Person(object):
|
|
def __init__(self, name):
|
|
self.name = name
|
|
|
|
class Employee(Person): pass
|
|
|
|
@classmethod
|
|
def insert_data(cls):
|
|
person_insert = person_table.insert()
|
|
person_insert.execute(id=1, name='alice')
|
|
person_insert.execute(id=2, name='bob')
|
|
|
|
employee_insert = employee_table.insert()
|
|
employee_insert.execute(id=2, salary=250, person_id=1) # alice
|
|
employee_insert.execute(id=3, salary=200, person_id=2) # bob
|
|
|
|
def test_implicit(self):
|
|
person_mapper = mapper(Person, person_table)
|
|
mapper(Employee, employee_table, inherits=person_mapper)
|
|
assert list(class_mapper(Employee).primary_key) == [person_table.c.id]
|
|
|
|
def test_explicit_props(self):
|
|
person_mapper = mapper(Person, person_table)
|
|
mapper(Employee, employee_table, inherits=person_mapper,
|
|
properties={'pid':person_table.c.id,
|
|
'eid':employee_table.c.id})
|
|
self._do_test(True)
|
|
|
|
def test_explicit_composite_pk(self):
|
|
person_mapper = mapper(Person, person_table)
|
|
mapper(Employee, employee_table,
|
|
inherits=person_mapper,
|
|
primary_key=[person_table.c.id, employee_table.c.id])
|
|
assert_raises_message(sa_exc.SAWarning,
|
|
r"On mapper Mapper\|Employee\|employees, "
|
|
"primary key column 'employees.id' is being "
|
|
"combined with distinct primary key column 'persons.id' "
|
|
"in attribute 'id'. Use explicit properties to give "
|
|
"each column its own mapped attribute name.",
|
|
self._do_test, True
|
|
)
|
|
|
|
def test_explicit_pk(self):
|
|
person_mapper = mapper(Person, person_table)
|
|
mapper(Employee, employee_table, inherits=person_mapper, primary_key=[person_table.c.id])
|
|
self._do_test(False)
|
|
|
|
def _do_test(self, composite):
|
|
session = create_session()
|
|
query = session.query(Employee)
|
|
|
|
if composite:
|
|
alice1 = query.get([1,2])
|
|
bob = query.get([2,3])
|
|
alice2 = query.get([1,2])
|
|
else:
|
|
alice1 = query.get(1)
|
|
bob = query.get(2)
|
|
alice2 = query.get(1)
|
|
|
|
assert alice1.name == alice2.name == 'alice'
|
|
assert bob.name == 'bob'
|
|
|
|
class SyncCompileTest(_base.MappedTest):
|
|
"""test that syncrules compile properly on custom inherit conds"""
|
|
|
|
@classmethod
|
|
def define_tables(cls, metadata):
|
|
global _a_table, _b_table, _c_table
|
|
|
|
_a_table = Table('a', metadata,
|
|
Column('id', Integer, primary_key=True, test_needs_autoincrement=True),
|
|
Column('data1', String(128))
|
|
)
|
|
|
|
_b_table = Table('b', metadata,
|
|
Column('a_id', Integer, ForeignKey('a.id'), primary_key=True),
|
|
Column('data2', String(128))
|
|
)
|
|
|
|
_c_table = Table('c', metadata,
|
|
# Column('a_id', Integer, ForeignKey('b.a_id'), primary_key=True), #works
|
|
Column('b_a_id', Integer, ForeignKey('b.a_id'), primary_key=True),
|
|
Column('data3', String(128))
|
|
)
|
|
|
|
def test_joins(self):
|
|
for j1 in (None, _b_table.c.a_id==_a_table.c.id, _a_table.c.id==_b_table.c.a_id):
|
|
for j2 in (None, _b_table.c.a_id==_c_table.c.b_a_id,
|
|
_c_table.c.b_a_id==_b_table.c.a_id):
|
|
self._do_test(j1, j2)
|
|
for t in reversed(_a_table.metadata.sorted_tables):
|
|
t.delete().execute().close()
|
|
|
|
def _do_test(self, j1, j2):
|
|
class A(object):
|
|
def __init__(self, **kwargs):
|
|
for key, value in kwargs.items():
|
|
setattr(self, key, value)
|
|
|
|
class B(A):
|
|
pass
|
|
|
|
class C(B):
|
|
pass
|
|
|
|
mapper(A, _a_table)
|
|
mapper(B, _b_table, inherits=A,
|
|
inherit_condition=j1
|
|
)
|
|
mapper(C, _c_table, inherits=B,
|
|
inherit_condition=j2
|
|
)
|
|
|
|
session = create_session()
|
|
|
|
a = A(data1='a1')
|
|
session.add(a)
|
|
|
|
b = B(data1='b1', data2='b2')
|
|
session.add(b)
|
|
|
|
c = C(data1='c1', data2='c2', data3='c3')
|
|
session.add(c)
|
|
|
|
session.flush()
|
|
session.expunge_all()
|
|
|
|
assert len(session.query(A).all()) == 3
|
|
assert len(session.query(B).all()) == 2
|
|
assert len(session.query(C).all()) == 1
|
|
|
|
class OverrideColKeyTest(_base.MappedTest):
|
|
"""test overriding of column attributes."""
|
|
|
|
@classmethod
|
|
def define_tables(cls, metadata):
|
|
global base, subtable
|
|
|
|
base = Table('base', metadata,
|
|
Column('base_id', Integer, primary_key=True, test_needs_autoincrement=True),
|
|
Column('data', String(255)),
|
|
Column('sqlite_fixer', String(10))
|
|
)
|
|
|
|
subtable = Table('subtable', metadata,
|
|
Column('base_id', Integer, ForeignKey('base.base_id'), primary_key=True),
|
|
Column('subdata', String(255))
|
|
)
|
|
|
|
def test_plain(self):
|
|
# control case
|
|
class Base(object):
|
|
pass
|
|
class Sub(Base):
|
|
pass
|
|
|
|
mapper(Base, base)
|
|
mapper(Sub, subtable, inherits=Base)
|
|
|
|
# Sub gets a "base_id" property using the "base_id"
|
|
# column of both tables.
|
|
eq_(
|
|
class_mapper(Sub).get_property('base_id').columns,
|
|
[base.c.base_id, subtable.c.base_id]
|
|
)
|
|
|
|
def test_override_explicit(self):
|
|
# this pattern is what you see when using declarative
|
|
# in particular, here we do a "manual" version of
|
|
# what we'd like the mapper to do.
|
|
|
|
class Base(object):
|
|
pass
|
|
class Sub(Base):
|
|
pass
|
|
|
|
mapper(Base, base, properties={
|
|
'id':base.c.base_id
|
|
})
|
|
mapper(Sub, subtable, inherits=Base, properties={
|
|
# this is the manual way to do it, is not really
|
|
# possible in declarative
|
|
'id':[base.c.base_id, subtable.c.base_id]
|
|
})
|
|
|
|
eq_(
|
|
class_mapper(Sub).get_property('id').columns,
|
|
[base.c.base_id, subtable.c.base_id]
|
|
)
|
|
|
|
s1 = Sub()
|
|
s1.id = 10
|
|
sess = create_session()
|
|
sess.add(s1)
|
|
sess.flush()
|
|
assert sess.query(Sub).get(10) is s1
|
|
|
|
def test_override_onlyinparent(self):
|
|
class Base(object):
|
|
pass
|
|
class Sub(Base):
|
|
pass
|
|
|
|
mapper(Base, base, properties={
|
|
'id':base.c.base_id
|
|
})
|
|
mapper(Sub, subtable, inherits=Base)
|
|
|
|
eq_(
|
|
class_mapper(Sub).get_property('id').columns,
|
|
[base.c.base_id]
|
|
)
|
|
|
|
eq_(
|
|
class_mapper(Sub).get_property('base_id').columns,
|
|
[subtable.c.base_id]
|
|
)
|
|
|
|
s1 = Sub()
|
|
s1.id = 10
|
|
|
|
s2 = Sub()
|
|
s2.base_id = 15
|
|
|
|
sess = create_session()
|
|
sess.add_all([s1, s2])
|
|
sess.flush()
|
|
|
|
# s1 gets '10'
|
|
assert sess.query(Sub).get(10) is s1
|
|
|
|
# s2 gets a new id, base_id is overwritten by the ultimate
|
|
# PK col
|
|
assert s2.id == s2.base_id != 15
|
|
|
|
def test_override_implicit(self):
|
|
# this is how the pattern looks intuitively when
|
|
# using declarative.
|
|
# fixed as part of [ticket:1111]
|
|
|
|
class Base(object):
|
|
pass
|
|
class Sub(Base):
|
|
pass
|
|
|
|
mapper(Base, base, properties={
|
|
'id':base.c.base_id
|
|
})
|
|
mapper(Sub, subtable, inherits=Base, properties={
|
|
'id':subtable.c.base_id
|
|
})
|
|
|
|
# Sub mapper compilation needs to detect that "base.c.base_id"
|
|
# is renamed in the inherited mapper as "id", even though
|
|
# it has its own "id" property. Sub's "id" property
|
|
# gets joined normally with the extra column.
|
|
|
|
eq_(
|
|
set(class_mapper(Sub).get_property('id').columns),
|
|
set([base.c.base_id, subtable.c.base_id])
|
|
)
|
|
|
|
s1 = Sub()
|
|
s1.id = 10
|
|
sess = create_session()
|
|
sess.add(s1)
|
|
sess.flush()
|
|
assert sess.query(Sub).get(10) is s1
|
|
|
|
def test_plain_descriptor(self):
|
|
"""test that descriptors prevent inheritance from propigating properties to subclasses."""
|
|
|
|
class Base(object):
|
|
pass
|
|
class Sub(Base):
|
|
@property
|
|
def data(self):
|
|
return "im the data"
|
|
|
|
mapper(Base, base)
|
|
mapper(Sub, subtable, inherits=Base)
|
|
|
|
s1 = Sub()
|
|
sess = create_session()
|
|
sess.add(s1)
|
|
sess.flush()
|
|
assert sess.query(Sub).one().data == "im the data"
|
|
|
|
def test_custom_descriptor(self):
|
|
"""test that descriptors prevent inheritance from propigating properties to subclasses."""
|
|
|
|
class MyDesc(object):
|
|
def __get__(self, instance, owner):
|
|
if instance is None:
|
|
return self
|
|
return "im the data"
|
|
|
|
class Base(object):
|
|
pass
|
|
class Sub(Base):
|
|
data = MyDesc()
|
|
|
|
mapper(Base, base)
|
|
mapper(Sub, subtable, inherits=Base)
|
|
|
|
s1 = Sub()
|
|
sess = create_session()
|
|
sess.add(s1)
|
|
sess.flush()
|
|
assert sess.query(Sub).one().data == "im the data"
|
|
|
|
def test_sub_columns_over_base_descriptors(self):
|
|
class Base(object):
|
|
@property
|
|
def subdata(self):
|
|
return "this is base"
|
|
|
|
class Sub(Base):
|
|
pass
|
|
|
|
mapper(Base, base)
|
|
mapper(Sub, subtable, inherits=Base)
|
|
|
|
sess = create_session()
|
|
b1 = Base()
|
|
assert b1.subdata == "this is base"
|
|
s1 = Sub()
|
|
s1.subdata = "this is sub"
|
|
assert s1.subdata == "this is sub"
|
|
|
|
sess.add_all([s1, b1])
|
|
sess.flush()
|
|
sess.expunge_all()
|
|
|
|
assert sess.query(Base).get(b1.base_id).subdata == "this is base"
|
|
assert sess.query(Sub).get(s1.base_id).subdata == "this is sub"
|
|
|
|
def test_base_descriptors_over_base_cols(self):
|
|
class Base(object):
|
|
@property
|
|
def data(self):
|
|
return "this is base"
|
|
|
|
class Sub(Base):
|
|
pass
|
|
|
|
mapper(Base, base)
|
|
mapper(Sub, subtable, inherits=Base)
|
|
|
|
sess = create_session()
|
|
b1 = Base()
|
|
assert b1.data == "this is base"
|
|
s1 = Sub()
|
|
assert s1.data == "this is base"
|
|
|
|
sess.add_all([s1, b1])
|
|
sess.flush()
|
|
sess.expunge_all()
|
|
|
|
assert sess.query(Base).get(b1.base_id).data == "this is base"
|
|
assert sess.query(Sub).get(s1.base_id).data == "this is base"
|
|
|
|
class OptimizedLoadTest(_base.MappedTest):
|
|
"""tests for the "optimized load" routine."""
|
|
|
|
@classmethod
|
|
def define_tables(cls, metadata):
|
|
global base, sub, with_comp
|
|
base = Table('base', metadata,
|
|
Column('id', Integer, primary_key=True, test_needs_autoincrement=True),
|
|
Column('data', String(50)),
|
|
Column('type', String(50))
|
|
)
|
|
sub = Table('sub', metadata,
|
|
Column('id', Integer, ForeignKey('base.id'), primary_key=True),
|
|
Column('sub', String(50))
|
|
)
|
|
with_comp = Table('with_comp', metadata,
|
|
Column('id', Integer, ForeignKey('base.id'), primary_key=True),
|
|
Column('a', String(10)),
|
|
Column('b', String(10))
|
|
)
|
|
|
|
def test_optimized_passes(self):
|
|
""""test that the 'optimized load' routine doesn't crash when
|
|
a column in the join condition is not available."""
|
|
|
|
class Base(_base.BasicEntity):
|
|
pass
|
|
class Sub(Base):
|
|
pass
|
|
|
|
mapper(Base, base, polymorphic_on=base.c.type, polymorphic_identity='base')
|
|
|
|
# redefine Sub's "id" to favor the "id" col in the subtable.
|
|
# "id" is also part of the primary join condition
|
|
mapper(Sub, sub, inherits=Base, polymorphic_identity='sub', properties={'id':sub.c.id})
|
|
sess = sessionmaker()()
|
|
s1 = Sub(data='s1data', sub='s1sub')
|
|
sess.add(s1)
|
|
sess.commit()
|
|
sess.expunge_all()
|
|
|
|
# load s1 via Base. s1.id won't populate since it's relative to
|
|
# the "sub" table. The optimized load kicks in and tries to
|
|
# generate on the primary join, but cannot since "id" is itself unloaded.
|
|
# the optimized load needs to return "None" so regular full-row loading proceeds
|
|
s1 = sess.query(Base).first()
|
|
assert s1.sub == 's1sub'
|
|
|
|
def test_column_expression(self):
|
|
class Base(_base.BasicEntity):
|
|
pass
|
|
class Sub(Base):
|
|
pass
|
|
mapper(Base, base, polymorphic_on=base.c.type, polymorphic_identity='base')
|
|
mapper(Sub, sub, inherits=Base, polymorphic_identity='sub', properties={
|
|
'concat':column_property(sub.c.sub + "|" + sub.c.sub)
|
|
})
|
|
sess = sessionmaker()()
|
|
s1 = Sub(data='s1data', sub='s1sub')
|
|
sess.add(s1)
|
|
sess.commit()
|
|
sess.expunge_all()
|
|
s1 = sess.query(Base).first()
|
|
assert s1.concat == 's1sub|s1sub'
|
|
|
|
def test_column_expression_joined(self):
|
|
class Base(_base.ComparableEntity):
|
|
pass
|
|
class Sub(Base):
|
|
pass
|
|
mapper(Base, base, polymorphic_on=base.c.type, polymorphic_identity='base')
|
|
mapper(Sub, sub, inherits=Base, polymorphic_identity='sub', properties={
|
|
'concat':column_property(base.c.data + "|" + sub.c.sub)
|
|
})
|
|
sess = sessionmaker()()
|
|
s1 = Sub(data='s1data', sub='s1sub')
|
|
s2 = Sub(data='s2data', sub='s2sub')
|
|
s3 = Sub(data='s3data', sub='s3sub')
|
|
sess.add_all([s1, s2, s3])
|
|
sess.commit()
|
|
sess.expunge_all()
|
|
# query a bunch of rows to ensure there's no cartesian
|
|
# product against "base" occurring, it is in fact
|
|
# detecting that "base" needs to be in the join
|
|
# criterion
|
|
eq_(
|
|
sess.query(Base).order_by(Base.id).all(),
|
|
[
|
|
Sub(data='s1data', sub='s1sub', concat='s1data|s1sub'),
|
|
Sub(data='s2data', sub='s2sub', concat='s2data|s2sub'),
|
|
Sub(data='s3data', sub='s3sub', concat='s3data|s3sub')
|
|
]
|
|
)
|
|
|
|
def test_composite_column_joined(self):
|
|
class Base(_base.ComparableEntity):
|
|
pass
|
|
class WithComp(Base):
|
|
pass
|
|
class Comp(object):
|
|
def __init__(self, a, b):
|
|
self.a = a
|
|
self.b = b
|
|
def __composite_values__(self):
|
|
return self.a, self.b
|
|
def __eq__(self, other):
|
|
return (self.a == other.a) and (self.b == other.b)
|
|
mapper(Base, base, polymorphic_on=base.c.type, polymorphic_identity='base')
|
|
mapper(WithComp, with_comp, inherits=Base, polymorphic_identity='wc', properties={
|
|
'comp': composite(Comp, with_comp.c.a, with_comp.c.b)
|
|
})
|
|
sess = sessionmaker()()
|
|
s1 = WithComp(data='s1data', comp=Comp('ham', 'cheese'))
|
|
s2 = WithComp(data='s2data', comp=Comp('bacon', 'eggs'))
|
|
sess.add_all([s1, s2])
|
|
sess.commit()
|
|
sess.expunge_all()
|
|
s1test, s2test = sess.query(Base).order_by(Base.id).all()
|
|
assert s1test.comp
|
|
assert s2test.comp
|
|
eq_(s1test.comp, Comp('ham', 'cheese'))
|
|
eq_(s2test.comp, Comp('bacon', 'eggs'))
|
|
|
|
|
|
class PKDiscriminatorTest(_base.MappedTest):
|
|
@classmethod
|
|
def define_tables(cls, metadata):
|
|
parents = Table('parents', metadata,
|
|
Column('id', Integer, primary_key=True, test_needs_autoincrement=True),
|
|
Column('name', String(60)))
|
|
|
|
children = Table('children', metadata,
|
|
Column('id', Integer, ForeignKey('parents.id'), primary_key=True),
|
|
Column('type', Integer,primary_key=True),
|
|
Column('name', String(60)))
|
|
|
|
@testing.resolve_artifact_names
|
|
def test_pk_as_discriminator(self):
|
|
class Parent(object):
|
|
def __init__(self, name=None):
|
|
self.name = name
|
|
|
|
class Child(object):
|
|
def __init__(self, name=None):
|
|
self.name = name
|
|
|
|
class A(Child):
|
|
pass
|
|
|
|
mapper(Parent, parents, properties={
|
|
'children': relationship(Child, backref='parent'),
|
|
})
|
|
mapper(Child, children, polymorphic_on=children.c.type,
|
|
polymorphic_identity=1)
|
|
|
|
mapper(A, inherits=Child, polymorphic_identity=2)
|
|
|
|
s = create_session()
|
|
p = Parent('p1')
|
|
a = A('a1')
|
|
p.children.append(a)
|
|
s.add(p)
|
|
s.flush()
|
|
|
|
assert a.id
|
|
assert a.type == 2
|
|
|
|
p.name='p1new'
|
|
a.name='a1new'
|
|
s.flush()
|
|
|
|
s.expire_all()
|
|
assert a.name=='a1new'
|
|
assert p.name=='p1new'
|
|
|
|
|
|
class DeleteOrphanTest(_base.MappedTest):
|
|
@classmethod
|
|
def define_tables(cls, metadata):
|
|
global single, parent
|
|
single = Table('single', metadata,
|
|
Column('id', Integer, primary_key=True, test_needs_autoincrement=True),
|
|
Column('type', String(50), nullable=False),
|
|
Column('data', String(50)),
|
|
Column('parent_id', Integer, ForeignKey('parent.id'), nullable=False),
|
|
)
|
|
|
|
parent = Table('parent', metadata,
|
|
Column('id', Integer, primary_key=True, test_needs_autoincrement=True),
|
|
Column('data', String(50))
|
|
)
|
|
|
|
def test_orphan_message(self):
|
|
class Base(_fixtures.Base):
|
|
pass
|
|
|
|
class SubClass(Base):
|
|
pass
|
|
|
|
class Parent(_fixtures.Base):
|
|
pass
|
|
|
|
mapper(Base, single, polymorphic_on=single.c.type, polymorphic_identity='base')
|
|
mapper(SubClass, inherits=Base, polymorphic_identity='sub')
|
|
mapper(Parent, parent, properties={
|
|
'related':relationship(Base, cascade="all, delete-orphan")
|
|
})
|
|
|
|
sess = create_session()
|
|
s1 = SubClass(data='s1')
|
|
sess.add(s1)
|
|
assert_raises_message(orm_exc.FlushError,
|
|
r"is not attached to any parent 'Parent' instance via "
|
|
"that classes' 'related' attribute", sess.flush)
|
|
|
|
|