"""Test various algorithmic properties of selectables."""
from sqlalchemy.test.testing import eq_,assert_raises,assert_raises_message
from sqlalchemy import *
from sqlalchemy.test import *
from sqlalchemy.sql import util
from sqlalchemy import exc
from sqlalchemy.sql import table,column,null
from sqlalchemy import util
metadata = MetaData()
table1 = Table('table1', metadata,
Column('col1', Integer, primary_key=True),
Column('col2', String(20)),
Column('col3', Integer),
Column('colx', Integer),
)
table2 = Table('table2', metadata,
Column('col1', Integer, primary_key=True),
Column('col2', Integer, ForeignKey('table1.col1')),
Column('col3', String(20)),
Column('coly', Integer),
)
class SelectableTest(TestBase, AssertsExecutionResults):
def test_distance_on_labels(self):
# same column three times
s = select([table1.c.col1.label('c2'), table1.c.col1, table1.c.col1.label('c1')])
# didnt do this yet...col.label().make_proxy() has same "distance" as col.make_proxy() so far
#assert s.corresponding_column(table1.c.col1) is s.c.col1
assert s.corresponding_column(s.c.col1) is s.c.col1
assert s.corresponding_column(s.c.c1) is s.c.c1
def test_distance_on_aliases(self):
a1 = table1.alias('a1')
for s in (
select([a1, table1], use_labels=True),
select([table1, a1], use_labels=True)
):
assert s.corresponding_column(table1.c.col1) is s.c.table1_col1
assert s.corresponding_column(a1.c.col1) is s.c.a1_col1
def test_join_against_self(self):
jj = select([table1.c.col1.label('bar_col1')])
jjj = join(table1, jj, table1.c.col1==jj.c.bar_col1)
# test column directly agaisnt itself
assert jjj.corresponding_column(jjj.c.table1_col1) is jjj.c.table1_col1
assert jjj.corresponding_column(jj.c.bar_col1) is jjj.c.bar_col1
# test alias of the join
j2 = jjj.alias('foo')
assert j2.corresponding_column(table1.c.col1) is j2.c.table1_col1
def test_against_cloned_non_table(self):
# test that corresponding column digs across
# clone boundaries with anonymous labeled elements
col = func.count().label('foo')
sel = select([col])
sel2 = visitors.ReplacingCloningVisitor().traverse(sel)
assert sel2.corresponding_column(col) is sel2.c.foo
sel3 = visitors.ReplacingCloningVisitor().traverse(sel2)
assert sel3.corresponding_column(col) is sel3.c.foo
def test_select_on_table(self):
sel = select([table1, table2], use_labels=True)
assert sel.corresponding_column(table1.c.col1) is sel.c.table1_col1
assert sel.corresponding_column(table1.c.col1, require_embedded=True) is sel.c.table1_col1
assert table1.corresponding_column(sel.c.table1_col1) is table1.c.col1
assert table1.corresponding_column(sel.c.table1_col1, require_embedded=True) is None
def test_join_against_join(self):
j = outerjoin(table1, table2, table1.c.col1==table2.c.col2)
jj = select([ table1.c.col1.label('bar_col1')],from_obj=[j]).alias('foo')
jjj = join(table1, jj, table1.c.col1==jj.c.bar_col1)
assert jjj.corresponding_column(jjj.c.table1_col1) is jjj.c.table1_col1
j2 = jjj.alias('foo')
assert j2.corresponding_column(jjj.c.table1_col1) is j2.c.table1_col1
assert jjj.corresponding_column(jj.c.bar_col1) is jj.c.bar_col1
def test_table_alias(self):
a = table1.alias('a')
j = join(a, table2)
criterion = a.c.col1 == table2.c.col2
self.assert_(criterion.compare(j.onclause))
def test_union(self):
# tests that we can correspond a column in a Select statement with a certain Table, against
# a column in a Union where one of its underlying Selects matches to that same Table
u = select([table1.c.col1, table1.c.col2, table1.c.col3, table1.c.colx, null().label('coly')]).union(
select([table2.c.col1, table2.c.col2, table2.c.col3, null().label('colx'), table2.c.coly])
)
s1 = table1.select(use_labels=True)
s2 = table2.select(use_labels=True)
c = u.corresponding_column(s1.c.table1_col2)
assert u.corresponding_column(s1.c.table1_col2) is u.c.col2
assert u.corresponding_column(s2.c.table2_col2) is u.c.col2
def test_union_precedence(self):
# conflicting column correspondence should be resolved based on
# the order of the select()s in the union
s1 = select([table1.c.col1, table1.c.col2])
s2 = select([table1.c.col2, table1.c.col1])
s3 = select([table1.c.col3, table1.c.colx])
s4 = select([table1.c.colx, table1.c.col3])
u1 = union(s1, s2)
assert u1.corresponding_column(table1.c.col1) is u1.c.col1
assert u1.corresponding_column(table1.c.col2) is u1.c.col2
u1 = union(s1, s2, s3, s4)
assert u1.corresponding_column(table1.c.col1) is u1.c.col1
assert u1.corresponding_column(table1.c.col2) is u1.c.col2
assert u1.corresponding_column(table1.c.colx) is u1.c.col2
assert u1.corresponding_column(table1.c.col3) is u1.c.col1
def test_singular_union(self):
u = union(select([table1.c.col1, table1.c.col2, table1.c.col3]), select([table1.c.col1, table1.c.col2, table1.c.col3]))
u = union(select([table1.c.col1, table1.c.col2, table1.c.col3]))
assert u.c.col1 is not None
assert u.c.col2 is not None
assert u.c.col3 is not None
def test_alias_union(self):
# same as testunion, except its an alias of the union
u = select([table1.c.col1, table1.c.col2, table1.c.col3, table1.c.colx, null().label('coly')]).union(
select([table2.c.col1, table2.c.col2, table2.c.col3, null().label('colx'), table2.c.coly])
).alias('analias')
s1 = table1.select(use_labels=True)
s2 = table2.select(use_labels=True)
assert u.corresponding_column(s1.c.table1_col2) is u.c.col2
assert u.corresponding_column(s2.c.table2_col2) is u.c.col2
assert u.corresponding_column(s2.c.table2_coly) is u.c.coly
assert s2.corresponding_column(u.c.coly) is s2.c.table2_coly
def test_select_union(self):
# like testaliasunion, but off a Select off the union.
u = select([table1.c.col1, table1.c.col2, table1.c.col3, table1.c.colx, null().label('coly')]).union(
select([table2.c.col1, table2.c.col2, table2.c.col3, null().label('colx'), table2.c.coly])
).alias('analias')
s = select([u])
s1 = table1.select(use_labels=True)
s2 = table2.select(use_labels=True)
assert s.corresponding_column(s1.c.table1_col2) is s.c.col2
assert s.corresponding_column(s2.c.table2_col2) is s.c.col2
def test_union_against_join(self):
# same as testunion, except its an alias of the union
u = select([table1.c.col1, table1.c.col2, table1.c.col3, table1.c.colx, null().label('coly')]).union(
select([table2.c.col1, table2.c.col2, table2.c.col3, null().label('colx'), table2.c.coly])
).alias('analias')
j1 = table1.join(table2)
assert u.corresponding_column(j1.c.table1_colx) is u.c.colx
assert j1.corresponding_column(u.c.colx) is j1.c.table1_colx
def test_join(self):
a = join(table1, table2)
print str(a.select(use_labels=True))
b = table2.alias('b')
j = join(a, b)
print str(j)
criterion = a.c.table1_col1 == b.c.col2
self.assert_(criterion.compare(j.onclause))
def test_select_alias(self):
a = table1.select().alias('a')
j = join(a, table2)
criterion = a.c.col1 == table2.c.col2
self.assert_(criterion.compare(j.onclause))
def test_select_labels(self):
a = table1.select(use_labels=True)
j = join(a, table2)
criterion = a.c.table1_col1 == table2.c.col2
self.assert_(criterion.compare(j.onclause))
def test_column_labels(self):
a = select([table1.c.col1.label('acol1'), table1.c.col2.label('acol2'), table1.c.col3.label('acol3')])
j = join(a, table2)
criterion = a.c.acol1 == table2.c.col2
self.assert_(criterion.compare(j.onclause))
def test_labeled_select_correspoinding(self):
l1 = select([func.max(table1.c.col1)]).label('foo')
s = select([l1])
eq_(s.corresponding_column(l1), s.c.foo)
s = select([table1.c.col1, l1])
eq_(s.corresponding_column(l1), s.c.foo)
def test_select_alias_labels(self):
a = table2.select(use_labels=True).alias('a')
j = join(a, table1)
criterion = table1.c.col1 == a.c.table2_col2
self.assert_(criterion.compare(j.onclause))
def test_table_joined_to_select_of_table(self):
metadata = MetaData()
a = Table('a', metadata,
Column('id', Integer, primary_key=True))
b = Table('b', metadata,
Column('id', Integer, primary_key=True),
Column('aid', Integer, ForeignKey('a.id')),
)
j1 = a.outerjoin(b)
j2 = select([a.c.id.label('aid')]).alias('bar')
j3 = a.join(j2, j2.c.aid==a.c.id)
j4 = select([j3]).alias('foo')
assert j4.corresponding_column(j2.c.aid) is j4.c.aid
assert j4.corresponding_column(a.c.id) is j4.c.id
def test_two_metadata_join_raises(self):
m = MetaData()
m2 = MetaData()
t1 = Table('t1', m, Column('id', Integer), Column('id2', Integer))
t2 = Table('t2', m, Column('id', Integer, ForeignKey('t1.id')))
t3 = Table('t3', m2, Column('id', Integer, ForeignKey('t1.id2')))
s = select([t2, t3], use_labels=True)
assert_raises(exc.NoReferencedTableError, s.join, t1)
def test_join_condition(self):
m = MetaData()
t1 = Table('t1', m, Column('id', Integer))
t2 = Table('t2', m, Column('id', Integer), Column('t1id', ForeignKey('t1.id')))
t3 = Table('t3', m, Column('id', Integer),
Column('t1id', ForeignKey('t1.id')),
Column('t2id', ForeignKey('t2.id')))
t4 = Table('t4', m, Column('id', Integer), Column('t2id', ForeignKey('t2.id')))
t1t2 = t1.join(t2)
t2t3 = t2.join(t3)
for left, right, a_subset, expected in [
(t1, t2, None, t1.c.id==t2.c.t1id),
(t1t2, t3, t2, t1t2.c.t2_id==t3.c.t2id),
(t2t3, t1, t3, t1.c.id==t3.c.t1id),
(t2t3, t4, None, t2t3.c.t2_id==t4.c.t2id),
(t2t3, t4, t3, t2t3.c.t2_id==t4.c.t2id),
(t2t3.join(t1), t4, None, t2t3.c.t2_id==t4.c.t2id),
(t2t3.join(t1), t4, t1, t2t3.c.t2_id==t4.c.t2id),
(t1t2, t2t3, t2, t1t2.c.t2_id==t2t3.c.t3_t2id),
]:
assert expected.compare(
sql_util.join_condition(left, right, a_subset=a_subset)
)
# these are ambiguous, or have no joins
for left, right, a_subset in [
(t1t2, t3, None),
(t2t3, t1, None),
(t1, t4, None),
(t1t2, t2t3, None),
]:
assert_raises(
exc.ArgumentError,
sql_util.join_condition,
left, right, a_subset=a_subset
)
als = t2t3.alias()
# test join's behavior, including natural
for left, right, expected in [
(t1, t2, t1.c.id==t2.c.t1id),
(t1t2, t3, t1t2.c.t2_id==t3.c.t2id),
(t2t3, t1, t1.c.id==t3.c.t1id),
(t2t3, t4, t2t3.c.t2_id==t4.c.t2id),
(t2t3, t4, t2t3.c.t2_id==t4.c.t2id),
(t2t3.join(t1), t4, t2t3.c.t2_id==t4.c.t2id),
(t2t3.join(t1), t4, t2t3.c.t2_id==t4.c.t2id),
(t1t2, als, t1t2.c.t2_id==als.c.t3_t2id)
]:
assert expected.compare(
left.join(right).onclause
)
# TODO: this raises due to right side being "grouped",
# and no longer has FKs. Did we want to make
# _FromGrouping friendlier ?
assert_raises_message(
exc.ArgumentError,
r"Perhaps you meant to convert the right side to a subquery using alias\(\)\?",
t1t2.join, t2t3
)
assert_raises_message(
exc.ArgumentError,
r"Perhaps you meant to convert the right side to a subquery using alias\(\)\?",
t1t2.join, t2t3.select(use_labels=True)
)
class PrimaryKeyTest(TestBase, AssertsExecutionResults):
def test_join_pk_collapse_implicit(self):
"""test that redundant columns in a join get 'collapsed' into a minimal primary key,
which is the root column along a chain of foreign key relationships."""
meta = MetaData()
a = Table('a', meta, Column('id', Integer, primary_key=True))
b = Table('b', meta, Column('id', Integer, ForeignKey('a.id'), primary_key=True))
c = Table('c', meta, Column('id', Integer, ForeignKey('b.id'), primary_key=True))
d = Table('d', meta, Column('id', Integer, ForeignKey('c.id'), primary_key=True))
assert c.c.id.references(b.c.id)
assert not d.c.id.references(a.c.id)
assert list(a.join(b).primary_key) == [a.c.id]
assert list(b.join(c).primary_key) == [b.c.id]
assert list(a.join(b).join(c).primary_key) == [a.c.id]
assert list(b.join(c).join(d).primary_key) == [b.c.id]
assert list(d.join(c).join(b).primary_key) == [b.c.id]
assert list(a.join(b).join(c).join(d).primary_key) == [a.c.id]
def test_join_pk_collapse_explicit(self):
"""test that redundant columns in a join get 'collapsed' into a minimal primary key,
which is the root column along a chain of explicit join conditions."""
meta = MetaData()
a = Table('a', meta, Column('id', Integer, primary_key=True), Column('x', Integer))
b = Table('b', meta, Column('id', Integer, ForeignKey('a.id'), primary_key=True), Column('x', Integer))
c = Table('c', meta, Column('id', Integer, ForeignKey('b.id'), primary_key=True), Column('x', Integer))
d = Table('d', meta, Column('id', Integer, ForeignKey('c.id'), primary_key=True), Column('x', Integer))
print list(a.join(b, a.c.x==b.c.id).primary_key)
assert list(a.join(b, a.c.x==b.c.id).primary_key) == [a.c.id]
assert list(b.join(c, b.c.x==c.c.id).primary_key) == [b.c.id]
assert list(a.join(b).join(c, c.c.id==b.c.x).primary_key) == [a.c.id]
assert list(b.join(c, c.c.x==b.c.id).join(d).primary_key) == [b.c.id]
assert list(b.join(c, c.c.id==b.c.x).join(d).primary_key) == [b.c.id]
assert list(d.join(b, d.c.id==b.c.id).join(c, b.c.id==c.c.x).primary_key) == [b.c.id]
assert list(a.join(b).join(c, c.c.id==b.c.x).join(d).primary_key) == [a.c.id]
assert list(a.join(b, and_(a.c.id==b.c.id, a.c.x==b.c.id)).primary_key) == [a.c.id]
def test_init_doesnt_blowitaway(self):
meta = MetaData()
a = Table('a', meta,
Column('id', Integer, primary_key=True),
Column('x', Integer))
b = Table('b', meta,
Column('id', Integer, ForeignKey('a.id'), primary_key=True),
Column('x', Integer))
j = a.join(b)
assert list(j.primary_key) == [a.c.id]
j.foreign_keys
assert list(j.primary_key) == [a.c.id]
def test_non_column_clause(self):
meta = MetaData()
a = Table('a', meta,
Column('id', Integer, primary_key=True),
Column('x', Integer))
b = Table('b', meta,
Column('id', Integer, ForeignKey('a.id'), primary_key=True),
Column('x', Integer, primary_key=True))
j = a.join(b, and_(a.c.id==b.c.id, b.c.x==5))
assert str(j) == "a JOIN b ON a.id = b.id AND b.x = :x_1", str(j)
assert list(j.primary_key) == [a.c.id, b.c.x]
def test_onclause_direction(self):
metadata = MetaData()
employee = Table( 'Employee', metadata,
Column('name', String(100)),
Column('id', Integer, primary_key= True),
)
engineer = Table( 'Engineer', metadata,
Column('id', Integer, ForeignKey( 'Employee.id', ), primary_key=True),
)
eq_(
util.column_set(employee.join(engineer, employee.c.id==engineer.c.id).primary_key),
util.column_set([employee.c.id])
)
eq_(
util.column_set(employee.join(engineer, engineer.c.id==employee.c.id).primary_key),
util.column_set([employee.c.id])
)
class ReduceTest(TestBase, AssertsExecutionResults):
def test_reduce(self):
meta = MetaData()
t1 = Table('t1', meta,
Column('t1id', Integer, primary_key=True),
Column('t1data', String(30)))
t2 = Table('t2', meta,
Column('t2id', Integer, ForeignKey('t1.t1id'), primary_key=True),
Column('t2data', String(30)))
t3 = Table('t3', meta,
Column('t3id', Integer, ForeignKey('t2.t2id'), primary_key=True),
Column('t3data', String(30)))
eq_(
util.column_set(sql_util.reduce_columns([
t1.c.t1id, t1.c.t1data, t2.c.t2id,
t2.c.t2data, t3.c.t3id, t3.c.t3data])),
util.column_set([t1.c.t1id, t1.c.t1data, t2.c.t2data, t3.c.t3data])
)
def test_reduce_selectable(self):
metadata = MetaData()
engineers = Table('engineers', metadata,
Column('engineer_id', Integer, primary_key=True),
Column('engineer_name', String(50)),
)
managers = Table('managers', metadata,
Column('manager_id', Integer, primary_key=True),
Column('manager_name', String(50))
)
s = select([engineers, managers]).where(engineers.c.engineer_name==managers.c.manager_name)
eq_(util.column_set(sql_util.reduce_columns(list(s.c), s)),
util.column_set([s.c.engineer_id, s.c.engineer_name, s.c.manager_id])
)
def test_reduce_aliased_join(self):
metadata = MetaData()
people = Table('people', metadata,
Column('person_id', Integer, Sequence('person_id_seq', optional=True), primary_key=True),
Column('name', String(50)),
Column('type', String(30)))
engineers = Table('engineers', metadata,
Column('person_id', Integer, ForeignKey('people.person_id'), primary_key=True),
Column('status', String(30)),
Column('engineer_name', String(50)),
Column('primary_language', String(50)),
)
managers = Table('managers', metadata,
Column('person_id', Integer, ForeignKey('people.person_id'), primary_key=True),
Column('status', String(30)),
Column('manager_name', String(50))
)
pjoin = people.outerjoin(engineers).\
outerjoin(managers).select(use_labels=True).\
alias('pjoin')
eq_(
util.column_set(sql_util.reduce_columns([
pjoin.c.people_person_id, pjoin.c.engineers_person_id,
pjoin.c.managers_person_id])),
util.column_set([pjoin.c.people_person_id])
)
def test_reduce_aliased_union(self):
metadata = MetaData()
item_table = Table(
'item', metadata,
Column('id', Integer, ForeignKey('base_item.id'), primary_key=True),
Column('dummy', Integer, default=0))
base_item_table = Table(
'base_item', metadata,
Column('id', Integer, primary_key=True),
Column('child_name', String(255), default=None))
from sqlalchemy.orm.util import polymorphic_union
item_join = polymorphic_union( {
'BaseItem':base_item_table.select(base_item_table.c.child_name=='BaseItem'),
'Item':base_item_table.join(item_table),
}, None, 'item_join')
eq_(
util.column_set(sql_util.reduce_columns([
item_join.c.id, item_join.c.dummy, item_join.c.child_name
])),
util.column_set([item_join.c.id, item_join.c.dummy, item_join.c.child_name])
)
def test_reduce_aliased_union_2(self):
metadata = MetaData()
page_table = Table('page', metadata,
Column('id', Integer, primary_key=True),
)
magazine_page_table = Table('magazine_page', metadata,
Column('page_id', Integer, ForeignKey('page.id'), primary_key=True),
)
classified_page_table = Table('classified_page', metadata,
Column('magazine_page_id', Integer,
ForeignKey('magazine_page.page_id'), primary_key=True),
)
# this is essentially the union formed by the ORM's polymorphic_union function.
# we define two versions with different ordering of selects.
# the first selectable has the "real" column classified_page.magazine_page_id
pjoin = union(
select([
page_table.c.id,
magazine_page_table.c.page_id,
classified_page_table.c.magazine_page_id
]).select_from(page_table.join(magazine_page_table).join(classified_page_table)),
select([
page_table.c.id,
magazine_page_table.c.page_id,
cast(null(), Integer).label('magazine_page_id')
]).select_from(page_table.join(magazine_page_table)),
).alias('pjoin')
eq_(
util.column_set(sql_util.reduce_columns([pjoin.c.id, pjoin.c.page_id, pjoin.c.magazine_page_id])),
util.column_set([pjoin.c.id])
)
# the first selectable has a CAST, which is a placeholder for
# classified_page.magazine_page_id in the second selectable. reduce_columns
# needs to take into account all foreign keys derived from pjoin.c.magazine_page_id.
# the UNION construct currently makes the external column look like that of the first
# selectable only.
pjoin = union(
select([
page_table.c.id,
magazine_page_table.c.page_id,
cast(null(), Integer).label('magazine_page_id')
]).select_from(page_table.join(magazine_page_table)),
select([
page_table.c.id,
magazine_page_table.c.page_id,
classified_page_table.c.magazine_page_id
]).select_from(page_table.join(magazine_page_table).join(classified_page_table))
).alias('pjoin')
eq_(
util.column_set(sql_util.reduce_columns([
pjoin.c.id, pjoin.c.page_id, pjoin.c.magazine_page_id])),
util.column_set([pjoin.c.id])
)
class DerivedTest(TestBase, AssertsExecutionResults):
def test_table(self):
meta = MetaData()
t1 = Table('t1', meta, Column('c1', Integer, primary_key=True), Column('c2', String(30)))
t2 = Table('t2', meta, Column('c1', Integer, primary_key=True), Column('c2', String(30)))
assert t1.is_derived_from(t1)
assert not t2.is_derived_from(t1)
def test_alias(self):
meta = MetaData()
t1 = Table('t1', meta, Column('c1', Integer, primary_key=True), Column('c2', String(30)))
t2 = Table('t2', meta, Column('c1', Integer, primary_key=True), Column('c2', String(30)))
assert t1.alias().is_derived_from(t1)
assert not t2.alias().is_derived_from(t1)
assert not t1.is_derived_from(t1.alias())
assert not t1.is_derived_from(t2.alias())
def test_select(self):
meta = MetaData()
t1 = Table('t1', meta, Column('c1', Integer, primary_key=True), Column('c2', String(30)))
t2 = Table('t2', meta, Column('c1', Integer, primary_key=True), Column('c2', String(30)))
assert t1.select().is_derived_from(t1)
assert not t2.select().is_derived_from(t1)
assert select([t1, t2]).is_derived_from(t1)
assert t1.select().alias('foo').is_derived_from(t1)
assert select([t1, t2]).alias('foo').is_derived_from(t1)
assert not t2.select().alias('foo').is_derived_from(t1)
class AnnotationsTest(TestBase):
def test_annotated_corresponding_column(self):
table1 = table('table1', column("col1"))
s1 = select([table1.c.col1])
t1 = s1._annotate({})
t2 = s1
# t1 needs to share the same _make_proxy() columns as t2, even though it's
# annotated. otherwise paths will diverge once they are corresponded against "inner" below.
assert t1.c is t2.c
assert t1.c.col1 is t2.c.col1
inner = select([s1])
assert inner.corresponding_column(t2.c.col1, require_embedded=False) is inner.corresponding_column(t2.c.col1, require_embedded=True) is inner.c.col1
assert inner.corresponding_column(t1.c.col1, require_embedded=False) is inner.corresponding_column(t1.c.col1, require_embedded=True) is inner.c.col1
def test_annotated_visit(self):
table1 = table('table1', column("col1"), column("col2"))
bin = table1.c.col1 == bindparam('foo', value=None)
assert str(bin) == "table1.col1 = :foo"
def visit_binary(b):
b.right = table1.c.col2
b2 = visitors.cloned_traverse(bin, {}, {'binary':visit_binary})
assert str(b2) == "table1.col1 = table1.col2"
b3 = visitors.cloned_traverse(bin._annotate({}), {}, {'binary':visit_binary})
assert str(b3) == "table1.col1 = table1.col2"
def visit_binary(b):
b.left = bindparam('bar')
b4 = visitors.cloned_traverse(b2, {}, {'binary':visit_binary})
assert str(b4) == ":bar = table1.col2"
b5 = visitors.cloned_traverse(b3, {}, {'binary':visit_binary})
assert str(b5) == ":bar = table1.col2"
def test_annotate_expressions(self):
table1 = table('table1', column("col1"), column("col2"))
for expr, expected in [
(table1.c.col1, "table1.col1"),
(table1.c.col1 == 5, "table1.col1 = :col1_1"),
(table1.c.col1.in_([2,3,4]), "table1.col1 IN (:col1_1, :col1_2, :col1_3)")
]:
eq_(str(expr), expected)
eq_(str(expr._annotate({})), expected)
eq_(str(sql_util._deep_annotate(expr, {})), expected)
eq_(str(sql_util._deep_annotate(expr, {}, exclude=[table1.c.col1])), expected)
def test_deannotate(self):
table1 = table('table1', column("col1"), column("col2"))
bin = table1.c.col1 == bindparam('foo', value=None)
b2 = sql_util._deep_annotate(bin, {'_orm_adapt':True})
b3 = sql_util._deep_deannotate(b2)
b4 = sql_util._deep_deannotate(bin)
for elem in (b2._annotations, b2.left._annotations):
assert '_orm_adapt' in elem
for elem in (b3._annotations, b3.left._annotations, b4._annotations, b4.left._annotations):
assert elem == {}
assert b2.left is not bin.left
assert b3.left is not b2.left is not bin.left
assert b4.left is bin.left # since column is immutable
assert b4.right is not bin.right is not b2.right is not b3.right
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