def convert_domain_tree(self, domain, tables):
Target = self.get_target()
target = Target.__table__()
table, _ = tables[None]
name, operator, ids = domain
red_sql = reduce_ids(target.id, (i for i in ids if i is not None))
if operator.endswith('child_of'):
tree = With('id', recursive=True)
tree.query = target.select(target.id, where=red_sql)
tree.query |= (target
.join(tree, condition=Column(target, name) == tree.id)
.select(target.id))
else:
tree = With('id', name, recursive=True)
tree.query = target.select(
target.id, Column(target, name), where=red_sql)
tree.query |= (target
.join(tree, condition=target.id == Column(tree, name))
.select(target.id, Column(target, name)))
expression = table.id.in_(tree.select(tree.id, with_=[tree]))
if operator.startswith('not'):
return ~expression
return expression
def test_with_query(self):
with AliasManager():
simple = With()
simple.query = self.table.select(self.table.id,
where=self.table.id == 1)
second = With()
second.query = simple.select()
wq = WithQuery(with_=[simple, second])
self.assertEqual(wq._with_str(),
'WITH "a" AS ('
'SELECT "b"."id" FROM "t" AS "b" WHERE ("b"."id" = %s)'
'), "c" AS ('
'SELECT * FROM "a" AS "a"'
') ')
self.assertEqual(wq._with_params(), (1,))
def test_with_query(self):
with AliasManager():
simple = With()
simple.query = self.table.select(self.table.id,
where=self.table.id == 1)
second = With()
second.query = simple.select()
wq = WithQuery(with_=[simple, second])
self.assertEqual(
wq._with_str(), 'WITH "a" AS ('
'SELECT "b"."id" FROM "t" AS "b" WHERE ("b"."id" = %s)'
'), "c" AS ('
'SELECT * FROM "a" AS "a"'
') ')
self.assertEqual(wq._with_params(), (1, ))
def group_parent_all_cte(cls):
group = cls.__table__()
parents = With('id', 'parent', recursive=True)
parents.query = group.select(group.id, group.parent)
parents.query |= group.select(group.id, group.id)
parents.query |= (group
.join(parents, condition=group.parent == parents.id)
.select(group.id, parents.parent))
return parents
def test_recursive(self):
upto10 = With('n', recursive=True)
upto10.query = Values([(1, )])
upto10.query |= upto10.select(upto10.n + Literal(1),
where=upto10.n < Literal(100))
upto10.query.all_ = True
q = upto10.select(with_=[upto10])
self.assertEqual(
str(q), 'WITH RECURSIVE "a" ("n") AS ('
'VALUES (%s) '
'UNION ALL '
'SELECT ("a"."n" + %s) FROM "a" AS "a" WHERE ("a"."n" < %s)'
') SELECT * FROM "a" AS "a"')
self.assertEqual(q.params, (1, 1, 100))
def test_recursive(self):
upto10 = With('n', recursive=True)
upto10.query = Values([(1,)])
upto10.query |= upto10.select(
upto10.n + Literal(1),
where=upto10.n < Literal(100))
upto10.query.all_ = True
q = upto10.select(with_=[upto10])
self.assertEqual(str(q),
'WITH RECURSIVE "a"("n") AS ('
'VALUES (%s) '
'UNION ALL '
'SELECT ("a"."n" + %s) FROM "a" AS "a" WHERE ("a"."n" < %s)'
') SELECT * FROM "a" AS "a"')
self.assertEqual(q.params, (1, 1, 100))