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from sqlalchemy import *
import testbase
import string
import sqlalchemy.attributes as attr
class Principal( object ):
pass
class User( Principal ):
pass
class Group( Principal ):
pass
class InheritTest(testbase.AssertMixin):
def setUpAll(self):
global principals
global users
global groups
global user_group_map
principals = Table(
'principals',
testbase.db,
Column('principal_id', Integer, Sequence('principal_id_seq', optional=False), primary_key=True),
Column('name', String(50), nullable=False),
)
users = Table(
'prin_users',
testbase.db,
Column('principal_id', Integer, ForeignKey('principals.principal_id'), primary_key=True),
Column('password', String(50), nullable=False),
Column('email', String(50), nullable=False),
Column('login_id', String(50), nullable=False),
)
groups = Table(
'prin_groups',
testbase.db,
Column( 'principal_id', Integer, ForeignKey('principals.principal_id'), primary_key=True),
)
user_group_map = Table(
'prin_user_group_map',
testbase.db,
Column('user_id', Integer, ForeignKey( "prin_users.principal_id"), primary_key=True ),
Column('group_id', Integer, ForeignKey( "prin_groups.principal_id"), primary_key=True ),
#Column('user_id', Integer, ForeignKey( "prin_users.principal_id"), ),
#Column('group_id', Integer, ForeignKey( "prin_groups.principal_id"), ),
)
principals.create()
users.create()
groups.create()
user_group_map.create()
def tearDownAll(self):
user_group_map.drop()
groups.drop()
users.drop()
principals.drop()
def setUp(self):
objectstore.clear()
clear_mappers()
def testbasic(self):
assign_mapper( Principal, principals )
assign_mapper(
User,
users,
inherits=Principal.mapper
)
assign_mapper(
Group,
groups,
inherits=Principal.mapper,
properties=dict( users = relation(User.mapper, user_group_map, lazy=True, backref="groups") )
)
g = Group(name="group1")
g.users.append(User(name="user1", password="pw", email="foo@bar.com", login_id="lg1"))
objectstore.commit()
class InheritTest2(testbase.AssertMixin):
def setUpAll(self):
engine = testbase.db
global foo, bar, foo_bar
foo = Table('foo', engine,
Column('id', Integer, primary_key=True),
Column('data', String(20)),
).create()
bar = Table('bar', engine,
Column('bid', Integer, ForeignKey('foo.id'), primary_key=True),
#Column('fid', Integer, ForeignKey('foo.id'), )
).create()
foo_bar = Table('foo_bar', engine,
Column('foo_id', Integer, ForeignKey('foo.id')),
Column('bar_id', Integer, ForeignKey('bar.bid'))).create()
def tearDownAll(self):
foo_bar.drop()
bar.drop()
foo.drop()
def testbasic(self):
class Foo(object):
def __init__(self, data=None):
self.data = data
def __str__(self):
return "Foo(%s)" % self.data
def __repr__(self):
return str(self)
Foo.mapper = mapper(Foo, foo)
class Bar(Foo):
def __str__(self):
return "Bar(%s)" % self.data
Bar.mapper = mapper(Bar, bar, inherits=Foo.mapper, properties = {
# the old way, you needed to explicitly set up a compound
# column like this. but now the mapper uses SyncRules to match up
# the parent/child inherited columns
#'id':[bar.c.bid, foo.c.id]
})
Bar.mapper.add_property('foos', relation(Foo.mapper, foo_bar, primaryjoin=bar.c.bid==foo_bar.c.bar_id, secondaryjoin=foo_bar.c.foo_id==foo.c.id, lazy=False))
#Bar.mapper.add_property('foos', relation(Foo.mapper, foo_bar, lazy=False))
b = Bar('barfoo')
objectstore.commit()
b.foos.append(Foo('subfoo1'))
b.foos.append(Foo('subfoo2'))
objectstore.commit()
objectstore.clear()
l =b.mapper.select()
print l[0]
print l[0].foos
self.assert_result(l, Bar,
# {'id':1, 'data':'barfoo', 'bid':1, 'foos':(Foo, [{'id':2,'data':'subfoo1'}, {'id':3,'data':'subfoo2'}])},
{'id':1, 'data':'barfoo', 'foos':(Foo, [{'id':2,'data':'subfoo1'}, {'id':3,'data':'subfoo2'}])},
)
if __name__ == "__main__":
testbase.main()
|
