def test_iteration(self):
metadata = MetaData()
table1 = Table('table1', metadata,
Column('col1', sa.Integer, primary_key=True),
schema='someschema')
table2 = Table('table2', metadata,
Column('col1', sa.Integer, primary_key=True),
Column('col2', sa.Integer, sa.ForeignKey('someschema.table1.col1')),
schema='someschema')
# ensure this doesnt crash
print [t for t in metadata.sorted_tables]
buf = StringIO.StringIO()
def foo(s, p=None):
buf.write(s)
gen = sa.create_engine(testing.db.name + "://", strategy="mock", executor=foo)
gen = gen.dialect.schemagenerator(gen.dialect, gen)
gen.traverse(table1)
gen.traverse(table2)
buf = buf.getvalue()
print buf
if testing.db.dialect.preparer(testing.db.dialect).omit_schema:
assert buf.index("CREATE TABLE table1") > -1
assert buf.index("CREATE TABLE table2") > -1
else:
assert buf.index("CREATE TABLE someschema.table1") > -1
assert buf.index("CREATE TABLE someschema.table2") > -1
def test_compileonattr_rel_backref_b(self):
m = MetaData()
t1 = Table('t1', m, Column('id', Integer, primary_key=True),
Column('x', Integer))
t2 = Table('t2', m, Column('id', Integer, primary_key=True),
Column('t1_id', Integer, ForeignKey('t1.id')))
class Base(object):
def __init__(self):
pass
class Base_AKW(object):
def __init__(self, *args, **kwargs):
pass
for base in object, Base, Base_AKW:
class A(base):
pass
class B(base):
pass
mapper(A, t1)
mapper(B, t2, properties=dict(a=relation(A, backref='bs')))
a = A()
b = B()
b.a = a
session = create_session()
session.add(a)
assert b in session, 'base: %s' % base
def define_tables(self, metadata):
Table('table1', metadata,
Column('id', Integer, primary_key=True),
Column('data', String(30)))
Table('table2', metadata,
Column('id', Integer, primary_key=True),
Column('someid', None, ForeignKey('table1.id')))
def test_index_reflection(self):
m1 = MetaData(testing.db)
t1 = Table('party', m1,
Column('id', sa.Integer, nullable=False),
Column('name', sa.String(20), index=True)
)
i1 = sa.Index('idx1', t1.c.id, unique=True)
i2 = sa.Index('idx2', t1.c.name, t1.c.id, unique=False)
m1.create_all()
try:
m2 = MetaData(testing.db)
t2 = Table('party', m2, autoload=True)
print len(t2.indexes), t2.indexes
assert len(t2.indexes) == 3
# Make sure indexes are in the order we expect them in
tmp = [(idx.name, idx) for idx in t2.indexes]
tmp.sort()
r1, r2, r3 = [idx[1] for idx in tmp]
assert r1.name == 'idx1'
assert r2.name == 'idx2'
assert r1.unique == True
assert r2.unique == False
assert r3.unique == False
assert [t2.c.id] == r1.columns
assert [t2.c.name, t2.c.id] == r2.columns
assert [t2.c.name] == r3.columns
finally:
m1.drop_all()
def test_tokens(self):
m = MetaData()
bind = self.mock_engine()
sane_alone = Table('t', m, Column('id', Integer))
sane_schema = Table('t', m, Column('id', Integer), schema='s')
insane_alone = Table('t t', m, Column('id', Integer))
insane_schema = Table('t t', m, Column('id', Integer), schema='s s')
ddl = DDL('%(schema)s-%(table)s-%(fullname)s')
self.assertEquals(ddl._expand(sane_alone, bind), '-t-t')
self.assertEquals(ddl._expand(sane_schema, bind), 's-t-s.t')
self.assertEquals(ddl._expand(insane_alone, bind), '-"t t"-"t t"')
self.assertEquals(ddl._expand(insane_schema, bind),
'"s s"-"t t"-"s s"."t t"')
# overrides are used piece-meal and verbatim.
ddl = DDL('%(schema)s-%(table)s-%(fullname)s-%(bonus)s',
context={
'schema': 'S S',
'table': 'T T',
'bonus': 'b'
})
self.assertEquals(ddl._expand(sane_alone, bind), 'S S-T T-t-b')
self.assertEquals(ddl._expand(sane_schema, bind), 'S S-T T-s.t-b')
self.assertEquals(ddl._expand(insane_alone, bind), 'S S-T T-"t t"-b')
self.assertEquals(ddl._expand(insane_schema, bind),
'S S-T T-"s s"."t t"-b')
def define_tables(self, meta):
Table('user_t', meta, Column('id', Integer, primary_key=True),
Column('name', String(50)))
Table('stuff', meta, Column('id', Integer, primary_key=True),
Column('date', sa.Date),
Column('user_id', Integer, ForeignKey('user_t.id')))
def define_tables(self, metadata):
users = Table('users', metadata,
Column('username', String(50), primary_key=True),
Column('fullname', String(100)))
addresses = Table(
'addresses', metadata, Column('email',
String(50),
primary_key=True),
Column('username', String(50),
ForeignKey('users.username', onupdate="cascade")))
items = Table('items', metadata,
Column('itemname', String(50), primary_key=True),
Column('description', String(100)))
users_to_items = Table(
'users_to_items',
metadata,
Column('username',
String(50),
ForeignKey('users.username', onupdate='cascade'),
primary_key=True),
Column('itemname',
String(50),
ForeignKey('items.itemname', onupdate='cascade'),
primary_key=True),
)
def setUpAll(self):
global cartitems, sometable, metadata
metadata = MetaData(testing.db)
cartitems = Table(
"cartitems", metadata,
Column("cart_id",
Integer,
Sequence('cart_id_seq'),
primary_key=True), Column("description", String(40)),
Column("createdate", sa.DateTime()))
sometable = Table(
'Manager',
metadata,
Column(
'obj_id',
Integer,
Sequence('obj_id_seq'),
),
Column('name', String(128)),
Column('id',
Integer,
Sequence('Manager_id_seq', optional=True),
primary_key=True),
)
metadata.create_all()
def setUpAll(self):
global metadata, users
metadata = MetaData()
users = Table('users', metadata,
Column('user_id', sa.Integer, sa.Sequence('user_id_seq', optional=True), primary_key=True),
Column('user_name', sa.String(40)),
)
addresses = Table('email_addresses', metadata,
Column('address_id', sa.Integer, sa.Sequence('address_id_seq', optional=True), primary_key = True),
Column('user_id', sa.Integer, sa.ForeignKey(users.c.user_id)),
Column('email_address', sa.String(40)),
)
orders = Table('orders', metadata,
Column('order_id', sa.Integer, sa.Sequence('order_id_seq', optional=True), primary_key = True),
Column('user_id', sa.Integer, sa.ForeignKey(users.c.user_id)),
Column('description', sa.String(50)),
Column('isopen', sa.Integer),
)
orderitems = Table('items', metadata,
Column('item_id', sa.INT, sa.Sequence('items_id_seq', optional=True), primary_key = True),
Column('order_id', sa.INT, sa.ForeignKey("orders")),
Column('item_name', sa.VARCHAR(50)),
)
def test_composite_fk(self):
"""test reflection of composite foreign keys"""
meta = MetaData(testing.db)
multi = Table(
'multi', meta,
Column('multi_id', sa.Integer, primary_key=True),
Column('multi_rev', sa.Integer, primary_key=True),
Column('multi_hoho', sa.Integer, primary_key=True),
Column('name', sa.String(50), nullable=False),
Column('val', sa.String(100)),
test_needs_fk=True,
)
multi2 = Table('multi2', meta,
Column('id', sa.Integer, primary_key=True),
Column('foo', sa.Integer),
Column('bar', sa.Integer),
Column('lala', sa.Integer),
Column('data', sa.String(50)),
sa.ForeignKeyConstraint(['foo', 'bar', 'lala'], ['multi.multi_id', 'multi.multi_rev', 'multi.multi_hoho']),
test_needs_fk=True,
)
meta.create_all()
try:
meta2 = MetaData()
table = Table('multi', meta2, autoload=True, autoload_with=testing.db)
table2 = Table('multi2', meta2, autoload=True, autoload_with=testing.db)
self.assert_tables_equal(multi, table)
self.assert_tables_equal(multi2, table2)
j = sa.join(table, table2)
self.assert_(sa.and_(table.c.multi_id==table2.c.foo, table.c.multi_rev==table2.c.bar, table.c.multi_hoho==table2.c.lala).compare(j.onclause))
finally:
meta.drop_all()
def test_include_columns(self):
meta = MetaData(testing.db)
foo = Table('foo', meta, *[Column(n, sa.String(30))
for n in ['a', 'b', 'c', 'd', 'e', 'f']])
meta.create_all()
try:
meta2 = MetaData(testing.db)
foo = Table('foo', meta2, autoload=True,
include_columns=['b', 'f', 'e'])
# test that cols come back in original order
self.assertEquals([c.name for c in foo.c], ['b', 'e', 'f'])
for c in ('b', 'f', 'e'):
assert c in foo.c
for c in ('a', 'c', 'd'):
assert c not in foo.c
# test against a table which is already reflected
meta3 = MetaData(testing.db)
foo = Table('foo', meta3, autoload=True)
foo = Table('foo', meta3, include_columns=['b', 'f', 'e'],
useexisting=True)
self.assertEquals([c.name for c in foo.c], ['b', 'e', 'f'])
for c in ('b', 'f', 'e'):
assert c in foo.c
for c in ('a', 'c', 'd'):
assert c not in foo.c
finally:
meta.drop_all()
def test_nonreflected_fk_raises(self):
"""test that a NoReferencedColumnError is raised when reflecting
a table with an FK to another table which has not included the target
column in its reflection.
"""
meta = MetaData(testing.db)
a1 = Table('a', meta,
Column('x', sa.Integer, primary_key=True),
Column('z', sa.Integer),
test_needs_fk=True
)
b1 = Table('b', meta,
Column('y', sa.Integer, sa.ForeignKey('a.x')),
test_needs_fk=True
)
meta.create_all()
try:
m2 = MetaData(testing.db)
a2 = Table('a', m2, include_columns=['z'], autoload=True)
b2 = Table('b', m2, autoload=True)
self.assertRaises(tsa.exc.NoReferencedColumnError, a2.join, b2)
finally:
meta.drop_all()
def test_override_keys(self):
"""test that columns can be overridden with a 'key',
and that ForeignKey targeting during reflection still works."""
meta = MetaData(testing.db)
a1 = Table('a', meta,
Column('x', sa.Integer, primary_key=True),
Column('z', sa.Integer),
test_needs_fk=True
)
b1 = Table('b', meta,
Column('y', sa.Integer, sa.ForeignKey('a.x')),
test_needs_fk=True
)
meta.create_all()
try:
m2 = MetaData(testing.db)
a2 = Table('a', m2, Column('x', sa.Integer, primary_key=True, key='x1'), autoload=True)
b2 = Table('b', m2, autoload=True)
assert a2.join(b2).onclause.compare(a2.c.x1==b2.c.y)
assert b2.c.y.references(a2.c.x1)
finally:
meta.drop_all()
def test_tometadata_with_schema(self):
meta = MetaData()
table = Table(
'mytable',
meta,
Column('myid', Integer, primary_key=True),
Column('name', String(40), nullable=True),
Column('description', String(30),
CheckConstraint("description='hi'")),
UniqueConstraint('name'),
test_needs_fk=True,
)
table2 = Table(
'othertable',
meta,
Column('id', Integer, primary_key=True),
Column('myid', Integer, ForeignKey('mytable.myid')),
test_needs_fk=True,
)
meta2 = MetaData()
table_c = table.tometadata(meta2, schema='someschema')
table2_c = table2.tometadata(meta2, schema='someschema')
eq_(str(table_c.join(table2_c).onclause),
str(table_c.c.myid == table2_c.c.myid))
eq_(str(table_c.join(table2_c).onclause),
"someschema.mytable.myid = someschema.othertable.myid")
def test_create_drop_bound(self):
for meta in (MetaData, ThreadLocalMetaData):
for bind in (testing.db, testing.db.connect()):
metadata = meta()
table = Table('test_table', metadata, Column('foo', Integer))
metadata.bind = bind
assert metadata.bind is table.bind is bind
metadata.create_all()
assert table.exists()
metadata.drop_all()
table.create()
table.drop()
assert not table.exists()
metadata = meta()
table = Table('test_table', metadata, Column('foo', Integer))
metadata.connect(bind)
assert metadata.bind is table.bind is bind
metadata.create_all()
assert table.exists()
metadata.drop_all()
table.create()
table.drop()
assert not table.exists()
if isinstance(bind, engine.Connection):
bind.close()
def test_compileonattr_rel_backref_a(self):
m = MetaData()
t1 = Table('t1', m, Column('id', Integer, primary_key=True),
Column('x', Integer))
t2 = Table('t2', m, Column('id', Integer, primary_key=True),
Column('t1_id', Integer, ForeignKey('t1.id')))
class Base(object):
def __init__(self, *args, **kwargs):
pass
for base in object, Base:
class A(base):
pass
class B(base):
pass
mapper(A, t1, properties=dict(bs=relation(B, backref='a')))
mapper(B, t2)
b = B()
assert b.a is None
a = A()
b.a = a
session = create_session()
session.add(b)
assert a in session, "base is %s" % base
def define_tables(self, metadata):
Table('table_a', metadata,
Column('id', Integer, primary_key=True),
Column('name', String(30)))
Table('table_b', metadata,
Column('id', Integer, primary_key=True),
Column('name', String(30)),
Column('a_id', Integer, ForeignKey('table_a.id')))
def define_tables(self, metadata):
Table('users', metadata, Column('id', Integer, primary_key=True),
Column('name', String(40)), Column('fullname', String(100)),
Column('password', String(15)))
Table('addresses', metadata, Column('id', Integer, primary_key=True),
Column('email_address', String(100), nullable=False),
Column('user_id', Integer, ForeignKey('users.id')))
def define_tables(self, metadata):
Table('users', metadata,
Column('id', Integer, primary_key=True),
Column('name', String(30)),
Column('type', String(30)))
Table('email_users', metadata,
Column('id', Integer, ForeignKey('users.id'), primary_key=True),
Column('email_address', String(30)))
def test_with_inheritance(self):
metadata = MetaData(testing.db)
table1 = Table("mytable", metadata,
Column('col1', Integer, primary_key=True),
Column('col2', String(30)))
table2 = Table(
"mytable2",
metadata,
Column('col1',
Integer,
ForeignKey('mytable.col1'),
primary_key=True),
Column('col3', String(30)),
)
@profile_memory
def go():
class A(_base.ComparableEntity):
pass
class B(A):
pass
mapper(A,
table1,
polymorphic_on=table1.c.col2,
polymorphic_identity='a')
mapper(B, table2, inherits=A, polymorphic_identity='b')
sess = create_session()
a1 = A()
a2 = A()
b1 = B(col3='b1')
b2 = B(col3='b2')
for x in [a1, a2, b1, b2]:
sess.add(x)
sess.flush()
sess.clear()
alist = sess.query(A).order_by(A.col1).all()
self.assertEquals([A(), A(), B(col3='b1'), B(col3='b2')], alist)
for a in alist:
sess.delete(a)
sess.flush()
# dont need to clear_mappers()
del B
del A
metadata.create_all()
try:
go()
finally:
metadata.drop_all()
assert_no_mappers()
def test_session(self):
metadata = MetaData(testing.db)
table1 = Table("mytable", metadata,
Column('col1', Integer, primary_key=True),
Column('col2', String(30)))
table2 = Table("mytable2", metadata,
Column('col1', Integer, primary_key=True),
Column('col2', String(30)),
Column('col3', Integer, ForeignKey("mytable.col1")))
metadata.create_all()
m1 = mapper(A,
table1,
properties={
"bs":
relation(B,
cascade="all, delete",
order_by=table2.c.col1)
},
order_by=table1.c.col1)
m2 = mapper(B, table2)
m3 = mapper(A, table1, non_primary=True)
@profile_memory
def go():
sess = create_session()
a1 = A(col2="a1")
a2 = A(col2="a2")
a3 = A(col2="a3")
a1.bs.append(B(col2="b1"))
a1.bs.append(B(col2="b2"))
a3.bs.append(B(col2="b3"))
for x in [a1, a2, a3]:
sess.add(x)
sess.flush()
sess.clear()
alist = sess.query(A).all()
self.assertEquals([
A(col2="a1", bs=[B(col2="b1"), B(col2="b2")]),
A(col2="a2", bs=[]),
A(col2="a3", bs=[B(col2="b3")])
], alist)
for a in alist:
sess.delete(a)
sess.flush()
go()
metadata.drop_all()
del m1, m2, m3
assert_no_mappers()
def test_pickle_via_reflect():
# this is the most common use case, pickling the results of a
# database reflection
meta2 = MetaData(bind=testing.db)
t1 = Table('mytable', meta2, autoload=True)
t2 = Table('othertable', meta2, autoload=True)
meta3 = pickle.loads(pickle.dumps(meta2))
assert meta3.bind is None
assert meta3.tables['mytable'] is not t1
return (meta3.tables['mytable'], meta3.tables['othertable'])
def define_tables(self, metadata):
t2 = Table('t2', metadata, Column('nextid', Integer))
Table(
't1', metadata,
Column('id',
Integer,
primary_key=True,
default=sa.select([func.max(t2.c.nextid)]).as_scalar()),
Column('data', String(30)))
def define_tables(self, metadata):
Table('users', metadata, Column('id', Integer, primary_key=True),
Column('username', String(50), unique=True),
Column('fullname', String(100)))
Table(
'addresses', metadata, Column('id', Integer, primary_key=True),
Column('email', String(50)),
Column('username', String(50),
ForeignKey('users.username', onupdate="cascade")))
def define_tables(self, metadata):
Table('items', metadata, Column('item_id', Integer, primary_key=True),
Column('name', String(40)))
Table('item_keywords', metadata,
Column('item_id', Integer, ForeignKey('items.item_id')),
Column('keyword_id', Integer, ForeignKey('keywords.keyword_id')),
Column('data', String(40)))
Table('keywords', metadata,
Column('keyword_id', Integer, primary_key=True),
Column('name', String(40)))
def define_tables(self, metadata):
Table('users_table', metadata, Column('id', Integer, primary_key=True),
Column('name', String(64)))
Table('addresses_table', metadata,
Column('id', Integer, primary_key=True),
Column('user_id', Integer, ForeignKey('users_table.id')),
Column('email_address', String(128)),
Column('purpose', String(16)),
Column('bounces', Integer, default=0))
def define_tables(self, metadata):
Table('infos', metadata, Column('pk', Integer, primary_key=True),
Column('info', String(128)))
Table('data', metadata, Column('data_pk', Integer, primary_key=True),
Column('info_pk', Integer, ForeignKey('infos.pk')),
Column('timeval', Integer), Column('data_val', String(128)))
Table('rels', metadata, Column('rel_pk', Integer, primary_key=True),
Column('info_pk', Integer, ForeignKey('infos.pk')),
Column('start', Integer), Column('finish', Integer))
def define_tables(self, metadata):
Table('left', metadata,
Column('id', Integer, ForeignKey('middle.id'), primary_key=True),
Column('data', String(50), primary_key=True))
Table('middle', metadata, Column('id', Integer, primary_key=True),
Column('data', String(50)))
Table('right', metadata,
Column('id', Integer, ForeignKey('middle.id'), primary_key=True),
Column('data', String(50), primary_key=True))
def define_tables(self, metadata):
Table('departments', metadata,
Column('department_id', Integer, primary_key=True),
Column('name', String(50)))
Table(
'employees', metadata,
Column('person_id', Integer, primary_key=True),
Column('name', String(50)),
Column('department_id', Integer,
ForeignKey('departments.department_id')))
def test_append_constraint_unique(self):
meta = MetaData()
users = Table('users', meta, Column('id', sa.Integer))
addresses = Table('addresses', meta, Column('id', sa.Integer), Column('user_id', sa.Integer))
fk = sa.ForeignKeyConstraint(['user_id'],[users.c.id])
addresses.append_constraint(fk)
addresses.append_constraint(fk)
assert len(addresses.c.user_id.foreign_keys) == 1
assert addresses.constraints == set([addresses.primary_key, fk])
