def test(self):
operator = getattr(op, '_python_operator', op)
query = these(parent for parent in this('p') if operator(parent.age, parent.check, parent.names))
expected = operator(this('p').age, this('p').check, this('p').names)
self.assertIs(1, len(query.filters))
with context(UNPROXIFING_CONTEXT):
self.assertEqual(expected, query.filters[0])
def test_complex_query_with_3_tokens(self):
query = these((parent.title + parent.name,
child.name + child.nick, toy.name)
for parent in this('parent')
if parent.children
for child in parent.children
if child.toys
for toy in child.toys
if (parent.age > 32) & (child.age < 5) |
(toy.type == 'laptop'))
p = this('parent')
c = p.children
t = c.toys
filters = query.filters
expected_filters = [((p.age > 32) & (c.age < 5) | (t.type == 'laptop')),
p.children, c.toys]
tokens = query.tokens
expected_tokens = [p, c, t]
selection = query.selection
expected_selection = (p.title + p.name, c.name + c.nick, t.name)
with context(UNPROXIFING_CONTEXT):
self.assertEqual(selection, expected_selection)
self.assertEqual(len(expected_filters), len(filters))
for f in expected_filters:
self.assertIn(f, filters)
self.assertEqual(len(expected_tokens), len(tokens))
for t in expected_tokens:
self.assertIn(t, tokens)
def test_complex_query_with_3_tokens(self):
query = these(
(parent.title + parent.name, child.name + child.nick, toy.name)
for parent in this('parent') if parent.children
for child in parent.children if child.toys for toy in child.toys
if (parent.age > 32) & (child.age < 5) | (toy.type == 'laptop'))
p = this('parent')
c = p.children
t = c.toys
filters = query.filters
expected_filters = [
((p.age > 32) & (c.age < 5) | (t.type == 'laptop')), p.children,
c.toys
]
tokens = query.tokens
expected_tokens = [p, c, t]
selection = query.selection
expected_selection = (p.title + p.name, c.name + c.nick, t.name)
with context(UNPROXIFING_CONTEXT):
self.assertEqual(selection, expected_selection)
self.assertEqual(len(expected_filters), len(filters))
for f in expected_filters:
self.assertIn(f, filters)
self.assertEqual(len(expected_tokens), len(tokens))
for t in expected_tokens:
self.assertIn(t, tokens)
def test_complex_query_with_3_tokens():
query = these((parent.title + parent.name,
child.name + child.nick, toy.name)
for parent in this('parent')
if parent.children
for child in parent.children
if child.toys
for toy in child.toys
if (parent.age > 32) & (child.age < 5) | (toy.type == 'laptop'))
p = this('parent')
c = p.children
t = c.toys
filters = query.filters
expected_filters = [((p.age > 32) & (c.age < 5) | (t.type == 'laptop')),
p.children, c.toys]
tokens = [tk.expression for tk in query.tokens]
expected_tokens = [p, c, t]
selection = query.selection
expected_selection = (p.title + p.name, c.name + c.nick, t.name)
with context(UNPROXIFING_CONTEXT):
assert selection == expected_selection
assert len(expected_filters) == len(filters)
for f in expected_filters:
assert f in filters
assert len(expected_tokens) == len(tokens)
for t in expected_tokens:
assert t in tokens
def test_20121022_complex_intermingled_query(self):
'''
Tests that toy.type == 'laptop' does not get singled out
of its containing expression.
The following procedure is not current any more; but we leave it
there for historical reasons. Since the introduction of "particle
bubble" that captures all the parts and tokens, we have removed
the :attr:`xotl.ql.interfaces.IQueryPart.tokens`.
Slight variation over the same test of previous testcase but
that shows how `|` that if we don't have the `tokens` params
things will go wrong:
- `parent.age > 32` will have `this('parent')` as its token
- `child.age < 5` will have `this('parent').children` as its
token.
- When building `(parent.age > 32) & (child.age < 5)` the
resultant part will have only `this('parent')` as the token,
and
- `contains(child.toys, 'laptop')` will be attached to
`this('parent').children`, but this will create a stack in the
token for `child`, the stack will contain: ``child.age < 5``,
and ``contains(child.toys, 'laptop')``, for they don't merge.
- Then, building ``... | contains(child.toys, 'laptop')`` will
be attached to `this('parent')` only! This will cause that the
token `this('parent').children` will be left with a stack of
two items that will be considered separate filters, which is
wrong!
The solutions seems to be simply to make
`this('parent').children` aware of parts that are generated. So
:attr:`xotl.ql.core.QuerPart.tokens` is born.
'''
parent, child, toy = next((parent.title + parent.name,
child.name + child.nick, toy.name)
for parent in this('parent')
for child in parent.children
for toy in child.toys
if (parent.age > 32) & (child.age < 5) |
(toy.type == 'laptop'))
parts = self.bubble.parts
parent = this('parent')
child = parent.children
ok = lambda x: self.assertEquals(str(x), str(parts.pop(-1)))
toy = child.toys
ok(toy.name)
ok(child.name + child.nick)
ok(parent.title + parent.name)
ok((parent.age > 32) & (child.age < 5) | (toy.type == 'laptop'))
with self.assertRaises(IndexError):
print(ok(None))
def test_free_terms_are_not_captured(self):
from xotl.ql.expressions import any_
next(parent for parent in this('parent') if parent.name
if any_(this.children, this.age < 6))
parts = self.bubble.parts
self.assertIs(1, len(parts))
pname = this('parent').name
with context(UNPROXIFING_CONTEXT):
self.assertIn(pname, parts)
def test_20121022_complex_intermingled_query(self):
'''
Tests that toy.type == 'laptop' does not get singled out
of its containing expression.
The following procedure is not current any more; but we leave it
there for historical reasons. Since the introduction of "particle
bubble" that captures all the parts and tokens, we have removed
the :attr:`xotl.ql.interfaces.IQueryPart.tokens`.
Slight variation over the same test of previous testcase but
that shows how `|` that if we don't have the `tokens` params
things will go wrong:
- `parent.age > 32` will have `this('parent')` as its token
- `child.age < 5` will have `this('parent').children` as its
token.
- When building `(parent.age > 32) & (child.age < 5)` the
resultant part will have only `this('parent')` as the token,
and
- `contains(child.toys, 'laptop')` will be attached to
`this('parent').children`, but this will create a stack in the
token for `child`, the stack will contain: ``child.age < 5``,
and ``contains(child.toys, 'laptop')``, for they don't merge.
- Then, building ``... | contains(child.toys, 'laptop')`` will
be attached to `this('parent')` only! This will cause that the
token `this('parent').children` will be left with a stack of
two items that will be considered separate filters, which is
wrong!
The solutions seems to be simply to make
`this('parent').children` aware of parts that are generated. So
:attr:`xotl.ql.core.QuerPart.tokens` is born.
'''
parent, child, toy = next(
(parent.title + parent.name, child.name + child.nick, toy.name)
for parent in this('parent') for child in parent.children
for toy in child.toys
if (parent.age > 32) & (child.age < 5) | (toy.type == 'laptop'))
parts = self.bubble.parts
parent = this('parent')
child = parent.children
ok = lambda x: self.assertEquals(str(x), str(parts.pop(-1)))
toy = child.toys
ok(toy.name)
ok(child.name + child.nick)
ok(parent.title + parent.name)
ok((parent.age > 32) & (child.age < 5) | (toy.type == 'laptop'))
with self.assertRaises(IndexError):
print(ok(None))
def test_plain_iter():
with bubbling():
t1 = next(iter(this))
with context(UNPROXIFING_CONTEXT):
assert IBoundTerm.providedBy(t1)
t1 = next(parent for parent in this('parent'))
assert 'parent' == unboxed(t1).name
t1 = next(parent for parent in this('parent').children)
assert 'children' == unboxed(t1).name
def test_free_terms_are_not_captured(self):
from xotl.ql.expressions import any_
next(parent
for parent in this('parent')
if parent.name
if any_(this.children, this.age < 6))
parts = self.bubble.parts
self.assertIs(1, len(parts))
pname = this('parent').name
with context(UNPROXIFING_CONTEXT):
self.assertIn(pname, parts)
def test_is_a_partnership_is_not_forgotten(self):
from itertools import izip
query = these(
(person, partner)
for person, partner in izip(this('person'), this('partner'))
for rel in this('relation') if rel.type == 'partnership'
if (rel.subject == person) & (rel.object == partner))
filters = list(query.filters)
expected_rel_type = this('relation').type == 'partnership'
with context(UNPROXIFING_CONTEXT):
self.assertIn(expected_rel_type, filters)
self.assertIs(2, len(filters))
def test_is_a_partnership_is_not_forgotten(self):
from itertools import izip
query = these((person, partner)
for person, partner in izip(this('person'),
this('partner'))
for rel in this('relation')
if rel.type == 'partnership'
if (rel.subject == person) & (rel.object == partner))
filters = list(query.filters)
expected_rel_type = this('relation').type == 'partnership'
with context(UNPROXIFING_CONTEXT):
self.assertIn(expected_rel_type, filters)
self.assertIs(2, len(filters))
def test_is_a_partnership_is_not_forgotten():
from xoutil.iterators import zip
query = these((person, partner)
for person, partner in zip(this('person'),
this('partner'))
for rel in this('relation')
if rel.type == 'partnership'
if (rel.subject == person) & (rel.object == partner))
filters = list(query.filters)
expected_rel_type = this('relation').type == 'partnership'
with context(UNPROXIFING_CONTEXT):
assert expected_rel_type in filters
assert len(filters) == 2
def test_basic_queries(self):
from xotl.ql.expressions import count
query = these((parent.title + parent.name, count(child.toys))
for parent in this('parent') if parent.age < 40
for child in parent.children if child.age > 5)
self.assertTrue(provides_any(query, IQueryObject))
(parent_full_name, child_toys) = query.selection
full_name_expectation = this('parent').title + this('parent').name
# child_name_expectation = this('parent').children.name
child_toys_expectation = count(this('parent').children.toys)
parent_age_test = this('parent').age < 40
children_age_test = this('parent').children.age > 5
parent_token = this('parent')
children_token = this('parent').children
with context(UNPROXIFING_CONTEXT):
self.assertEqual(parent_full_name, full_name_expectation)
# self.assertEqual(child_name, child_name_expectation)
self.assertEqual(child_toys, child_toys_expectation)
filters = query.filters
self.assertEqual(2, len(filters))
self.assertIn(parent_age_test, filters)
self.assertIn(children_age_test, filters)
tokens = query.tokens
self.assertEqual(2, len(tokens))
self.assertIn(parent_token, tokens)
self.assertIn(children_token, tokens)
def test_basic_queries(self):
from xotl.ql.expressions import count
query = these((parent.title + parent.name, count(child.toys))
for parent in this('parent')
if parent.age < 40
for child in parent.children
if child.age > 5)
self.assertTrue(provides_any(query, IQueryObject))
(parent_full_name, child_toys) = query.selection
full_name_expectation = this('parent').title + this('parent').name
# child_name_expectation = this('parent').children.name
child_toys_expectation = count(this('parent').children.toys)
parent_age_test = this('parent').age < 40
children_age_test = this('parent').children.age > 5
parent_token = this('parent')
children_token = this('parent').children
with context(UNPROXIFING_CONTEXT):
self.assertEqual(parent_full_name, full_name_expectation)
# self.assertEqual(child_name, child_name_expectation)
self.assertEqual(child_toys, child_toys_expectation)
filters = query.filters
self.assertEqual(2, len(filters))
self.assertIn(parent_age_test, filters)
self.assertIn(children_age_test, filters)
tokens = query.tokens
self.assertEqual(2, len(tokens))
self.assertIn(parent_token, tokens)
self.assertIn(children_token, tokens)
def test_basic_queries():
from xotl.ql.expressions import count
query = these((parent.title + parent.name, count(child.toys))
for parent in this('parent')
if parent.age < 40
for child in parent.children
if child.age > 5)
assert provides_any(query, IQueryObject)
(parent_full_name, child_toys) = query.selection
full_name_expectation = this('parent').title + this('parent').name
child_toys_expectation = count(this('parent').children.toys)
parent_age_test = this('parent').age < 40
children_age_test = this('parent').children.age > 5
parent_token = this('parent')
children_token = this('parent').children
with context(UNPROXIFING_CONTEXT):
assert parent_full_name == full_name_expectation
assert child_toys == child_toys_expectation
filters = query.filters
assert len(filters) == 2
assert parent_age_test in filters
assert children_age_test in filters
tokens = [tk.expression for tk in query.tokens]
assert len(tokens) == 2
assert parent_token in tokens
assert children_token in tokens
def test_yield_once_per_query(self):
q = (a for c in this for b in c.bs for a in b.a)
self.assertIsNotNone(next(q))
with self.assertRaises(StopIteration):
next(q)
# TODO: Document how to obtain the queries
qs = (a for i in range(3) for b in this('b' + str(i)) for a in b.a)
for i in range(3):
expected = this('b' + str(i)).a
returned = unboxed(next(qs)).expression
with context(UNPROXIFING_CONTEXT):
self.assertEqual(expected, returned)
with self.assertRaises(StopIteration):
next(qs)
def test_yield_once_per_query():
q = (a for c in this for b in c.bs for a in b.a)
assert next(q) is not None
with pytest.raises(StopIteration):
next(q)
# TODO: Document how to obtain the queries
qs = (a for i in range(3) for b in this('b' + str(i)) for a in b.a)
for i in range(3):
expected = this('b' + str(i)).a
returned = next(qs)
with context(UNPROXIFING_CONTEXT):
assert expected == returned
with pytest.raises(StopIteration):
next(qs)
def test_complex_query_building(self):
parent, child = next(
(parent.title + parent.name, child.name + child.nick)
for parent in this('parent') if (parent.age > 32) & parent.children
for child in parent.children if child.age < 5)
ok = self.assertEquals
parts = self.bubble.parts
parent = this('parent')
child = parent.children
ok(str(child.name + child.nick), str(parts[-1]))
ok(str(parent.title + parent.name), str(parts[-2]))
ok(str(child.age < 5), str(parts[-3]))
ok(str((parent.age > 32) & parent.children), str(parts[-4]))
with self.assertRaises(IndexError):
print(str(parts[-5]))
def test_yield_once_per_query(self):
q = (a for c in this for b in c.bs for a in b.a)
self.assertIsNotNone(next(q))
with self.assertRaises(StopIteration):
next(q)
# TODO: Document how to obtain the queries
qs = (a for i in range(3) for b in this('b' + str(i)) for a in b.a)
for i in range(3):
expected = this('b' + str(i)).a
returned = unboxed(next(qs)).expression
with context(UNPROXIFING_CONTEXT):
self.assertEqual(expected, returned)
with self.assertRaises(StopIteration):
next(qs)
def test_free_terms_are_not_captured(self):
from xotl.ql.expressions import any_
these(parent for parent in this('parent') if parent.name
if any_(this.children, this.age < 6))
parts = self.bubble.parts
self.assertIs(0, len(parts))
def test_plain_iter(self):
t1 = next(iter(this))
with context(UNPROXIFING_CONTEXT):
self.assertTrue(IQueryPart.providedBy(t1),
'When itering over a this instance we '
'should get an IQueryPart object')
t1 = next(parent for parent in this('parent'))
self.assertEquals('parent', unboxed(unboxed(t1)._expression).name,
'The name of the QueryBuilderToken should be '
'the same as the name of the actual instance')
t1 = next(parent for parent in this('parent').children)
self.assertEquals('children', unboxed(unboxed(t1)._expression).name,
'The name of the QueryBuilderToken should be '
'the same as the name of the actual instance')
def test_undetected_particles(self):
from xotl.ql.expressions import any_
next(parent
for parent in this('parent')
if any_(child for child in parent.children if child.age < 6))
parts = self.bubble.parts
self.assertIs(0, len(parts))
def test_free_terms_are_not_captured():
from xotl.ql.expressions import any_
with bubbling() as current:
next(parent
for parent in this('parent')
if parent.name
if any_(this.children, this.age < 6))
parts = current.bubble.parts
assert len(parts) == 2
pname = this('parent').name
expected = any_(this.children, this.age < 6)
with context(UNPROXIFING_CONTEXT):
assert pname in parts
assert expected in parts
def test_complex_query_building(self):
parent, child = next((parent.title + parent.name,
child.name + child.nick)
for parent in this('parent')
if (parent.age > 32) & parent.children
for child in parent.children
if child.age < 5)
ok = self.assertEquals
parts = self.bubble.parts
parent = this('parent')
child = parent.children
ok(str(child.name + child.nick), str(parts[-1]))
ok(str(parent.title + parent.name), str(parts[-2]))
ok(str(child.age < 5), str(parts[-3]))
ok(str((parent.age > 32) & parent.children), str(parts[-4]))
with self.assertRaises(IndexError):
print(str(parts[-5]))
def test_most_basic_query(self):
query = these(parent for parent in this('parent') if parent.age > 40)
self.assertTrue(provides_any(query, IQueryObject))
(p, ) = query.selection
token_expectation = p_expected = this('parent')
filter_expectation = this('parent').age > 40
with context(UNPROXIFING_CONTEXT):
self.assertEqual(p, p_expected)
filters = query.filters
self.assertEqual(1, len(filters))
self.assertIn(filter_expectation, filters)
tokens = query.tokens
self.assertEqual(1, len(tokens))
self.assertIn(token_expectation, tuple(tokens))
def test_most_basic_query(self):
query = these(parent for parent in this('parent') if parent.age > 40)
self.assertTrue(provides_any(query, IQueryObject))
(p, ) = query.selection
token_expectation = p_expected = this('parent')
filter_expectation = this('parent').age > 40
with context(UNPROXIFING_CONTEXT):
self.assertEqual(p, p_expected)
filters = query.filters
self.assertEqual(1, len(filters))
self.assertIn(filter_expectation, filters)
tokens = query.tokens
self.assertEqual(1, len(tokens))
self.assertIn(token_expectation, tuple(tokens))
def test_right_bindings():
with bubbling() as current:
next((parent, child)
for parent in this('parent')
if parent.children.updated_since(days=1)
for child in parent.children
if child.age < 4)
# The query has two filters:
#
# this('parent').children & (count(this('parent').children) > 4)
# this('parent').children.age < 5
#
# If we regard every term `this('parent').children` as the *token*,
# what would be the meaning of the first condition? How do we
# distinguish from conditions over the named-token and the expression
# that generates the token? i.e in `for child in parent.children`, the
# `child` token is *not* the same as the term `parent.children`.
#
# Now the token of the relevant query might help, but then the machine
# should not strip those tokens from query-parts.
parts = current.bubble.parts
bubble_tokens = current.bubble.tokens
assert len(parts) == 2
with context(UNPROXIFING_CONTEXT):
parent_token = next((token
for token in bubble_tokens
if token.expression == this('parent')),
None)
children_token = next((token
for token in bubble_tokens
if token.expression != this('parent')),
None)
child_age_filter = parts.pop(-1)
parent_children_updated_filter = parts.pop(-1)
with pytest.raises(IndexError):
parts.pop(-1)
with context(UNPROXIFING_CONTEXT):
child_age_term = child_age_filter.children[0]
assert child_age_term.binding == children_token
# Note that: parent.children.updated_since(days=1)
# is equivalent to invoke(parent.children.updated_since, days=1)
parent_children_term = parent_children_updated_filter.children[0]
assert parent_children_term.binding == parent_token
assert dict(days=1) == parent_children_updated_filter.named_children
def test_complex_query_building_with_dict(self):
from xotl.ql.expressions import min_, max_
d = {parent.age: (min_(child.age), max_(child.age))
for parent in this('parent')
if (parent.age > 32) & parent.children
for child in parent.children if child.age < 5}
parts = self.bubble.parts
ok = lambda which: self.assertEqual(str(which), str(parts.pop(-1)))
parent = this('parent')
child = parent.children
ok(parent.age) # The key of the dict is the top-most expression
ok(max_(child.age))
ok(min_(child.age))
ok(child.age < 5)
ok((parent.age > 32) & parent.children)
with self.assertRaises(IndexError):
ok(None)
def test_free_terms_are_not_captured(self):
from xotl.ql.expressions import any_
these(parent
for parent in this('parent')
if parent.name
if any_(this.children, this.age < 6))
parts = self.bubble.parts
self.assertIs(0, len(parts))
def test_undetected_particles():
from xotl.ql.expressions import any_
with bubbling() as current:
next(parent
for parent in this('parent')
if any_(child for child in parent.children if child.age < 6))
parts = current.bubble.parts
# `child.age < 6` should not be leaked
assert 1 == len(parts)
def test_most_basic_query():
query = these(parent for parent in this('parent') if parent.age > 40)
assert provides_any(query, IQueryObject)
# Since the query selects a single object, a single object must be
# placed as the selection (not a tuple!).
p = query.selection
token_expectation = p_expected = this('parent')
filter_expectation = this('parent').age > 40
with context(UNPROXIFING_CONTEXT):
assert p == p_expected
filters = query.filters
assert len(filters) == 1
assert filter_expectation in filters
tokens = [tk.expression for tk in query.tokens]
assert len(tokens) == 1
assert token_expectation in tuple(tokens)
def test_complex_query_building_with_dict(self):
from xotl.ql.expressions import min_, max_
d = {
parent.age: (min_(child.age), max_(child.age))
for parent in this('parent') if (parent.age > 32) & parent.children
for child in parent.children if child.age < 5
}
parts = self.bubble.parts
ok = lambda which: self.assertEqual(str(which), str(parts.pop(-1)))
parent = this('parent')
child = parent.children
ok(parent.age) # The key of the dict is the top-most expression
ok(max_(child.age))
ok(min_(child.age))
ok(child.age < 5)
ok((parent.age > 32) & parent.children)
with self.assertRaises(IndexError):
ok(None)
def test_complex_query_building():
with bubbling() as current:
parent, child = next((parent.title + parent.name,
child.name + child.nick)
for parent in this('parent')
if (parent.age > 32) & parent.children
for child in parent.children
if child.age < 5)
parts = current.bubble.parts
assert len(parts) == 4 # 2 filters + 2 selections
parent = this('parent')
child = parent.children
assert str(child.name + child.nick) == str(parts[-1])
assert str(parent.title + parent.name) == str(parts[-2])
assert str(child.age < 5) == str(parts[-3])
assert str((parent.age > 32) & parent.children) == str(parts[-4])
with pytest.raises(IndexError):
print(str(parts[-5]))
def test_plain_iter(self):
t1 = next(iter(this))
with context(UNPROXIFING_CONTEXT):
self.assertTrue(
IQueryPart.providedBy(t1),
'When itering over a this instance we '
'should get an IQueryPart object')
t1 = next(parent for parent in this('parent'))
self.assertEquals(
'parent',
unboxed(unboxed(t1)._expression).name,
'The name of the QueryBuilderToken should be '
'the same as the name of the actual instance')
t1 = next(parent for parent in this('parent').children)
self.assertEquals(
'children',
unboxed(unboxed(t1)._expression).name,
'The name of the QueryBuilderToken should be '
'the same as the name of the actual instance')
def test_worst_case_must_have_3_filters_and_3_tokens():
from xoutil.compat import zip
with bubbling() as current:
next(person
for person, partner in zip(this('person'),
this('partner'))
for rel in this('relation')
if rel.type == 'partnership'
if rel.subject == person
if rel.object == partner
if partner.age > 32)
parts = current.bubble.parts
tokens = current.bubble.tokens
assert len(parts) == 4
tokens = [tk.expression for tk in tokens]
def ok(x):
assert str(x) == str(parts.pop(-1))
person = this('person')
partner = this('partner')
rel = this('relation')
assert person in tokens
assert partner in tokens
assert rel in tokens
ok(partner.age > 32)
ok(rel.object == partner)
ok(rel.subject == person)
ok(rel.type == 'partnership')
with pytest.raises(IndexError):
ok(None)
def test_is_a_partnership_is_not_forgotten():
from xoutil.compat import zip
with bubbling() as current:
next((person, partner)
for person, partner in zip(this('person'),
this('partner'))
for rel in this('relation')
if rel.type == 'partnership'
if (rel.subject == person) & (rel.object == partner))
parts = current.bubble.parts
tokens = current.bubble.tokens
assert len(parts) == 2 # Only the 2 filters
tokens = [tk.expression for tk in tokens]
def ok(x):
assert str(x) == str(parts.pop(-1))
person = this('person')
partner = this('partner')
rel = this('relation')
assert person in tokens
assert partner in tokens
assert rel in tokens
ok((rel.subject == person) & (rel.object == partner))
ok(rel.type == 'partnership')
with pytest.raises(IndexError):
ok(None)
def test_worst_case_must_have_3_filters_and_3_tokens(self):
from itertools import izip
query = these(
person for person, partner in izip(this('person'), this('partner'))
for rel in this('relation') if rel.type == 'partnership'
if rel.subject == person if rel.object == partner
if partner.age > 32)
filters = list(query.filters)
tokens = list(query.tokens)
person, partner, rel = this('person'), this('partner'), this(
'relation')
expected_rel_type_filter = rel.type == 'partnership'
expected_rel_subject_filter = rel.subject == person
expected_rel_obj_filter = rel.object == partner
expected_partner_age = partner.age > 32
with context(UNPROXIFING_CONTEXT):
self.assertIs(4, len(filters))
self.assertIn(expected_rel_type_filter, filters)
self.assertIn(expected_rel_subject_filter, filters)
self.assertIn(expected_rel_obj_filter, filters)
self.assertIn(expected_partner_age, filters)
self.assertIn(person, tokens)
self.assertIn(rel, tokens)
self.assertIs(3, len(tokens))
self.assertIn(partner, tokens)
def test_worst_case_must_have_3_filters_and_3_tokens(self):
from itertools import izip
next(person
for person, partner in izip(this('person'),
this('partner'))
for rel in this('relation')
if rel.type == 'partnership'
if rel.subject == person
if rel.object == partner
if partner.age > 32)
parts = self.bubble.parts
tokens = self.bubble.tokens
ok = lambda x: self.assertEqual(str(x), str(parts.pop(-1)))
person = this('person')
partner = this('partner')
rel = this('relation')
self.assertIn(person, tokens)
self.assertIn(partner, tokens)
self.assertIn(rel, tokens)
ok(partner.age > 32)
ok(rel.object == partner)
ok(rel.subject == person)
ok(rel.type == 'partnership')
with self.assertRaises(IndexError):
ok(None)
def test_worst_case_must_have_3_filters_and_3_tokens():
from xoutil.iterators import zip
query = these(person
for person, partner in zip(this('person'),
this('partner'))
for rel in this('relation')
if rel.type == 'partnership'
if rel.subject == person
if rel.object == partner
if partner.age > 32)
filters = list(query.filters)
tokens = [tk.expression for tk in query.tokens]
person, partner, rel = this('person'), this('partner'), this('relation')
expected_rel_type_filter = rel.type == 'partnership'
expected_rel_subject_filter = rel.subject == person
expected_rel_obj_filter = rel.object == partner
expected_partner_age = partner.age > 32
with context(UNPROXIFING_CONTEXT):
assert len(filters) == 4
assert expected_rel_type_filter in filters
assert expected_rel_subject_filter in filters
assert expected_rel_obj_filter in filters
assert expected_partner_age in filters
assert len(tokens) == 3
assert person in tokens
assert rel in tokens
assert partner in tokens
def test_right_bindings(self):
next((parent, child) for parent in this('parent')
if parent.children.updated_since(days=1)
for child in parent.children if child.age < 4)
# The query has two filters:
#
# this('parent').children & (count(this('parent').children) > 4)
# this('parent').children.age < 5
#
# If we regard every term `this('parent').children` as the *token*,
# what would be the meaning of the first condition? How do we
# distinguish from conditions over the named-token and the
# expression that generates the token?
# i.e in `for child in parent.children`, the `child` token
# is *not* the same as the term `parent.children`.
#
# Now the token of the relevant query might help, but then the
# machine should not strip those tokens from query-parts.
parts = self.bubble.parts
bubble_tokens = self.bubble.tokens
with context(UNPROXIFING_CONTEXT):
parent_token = next((token for token in bubble_tokens
if token.expression == this('parent')), None)
children_token = next((token for token in bubble_tokens
if token.expression != this('parent')),
None)
child_age_filter = parts.pop(-1)
parent_children_updated_filter = parts.pop(-1)
with self.assertRaises(IndexError):
parts.pop(-1)
with context(UNPROXIFING_CONTEXT):
child_age_term = child_age_filter.children[0]
self.assertEqual(child_age_term.binding, children_token)
# Note that: parent.children.updated_since(days=1)
# is equivalent to invoke(parent.children.updated_since, days=1)
parent_children_term = parent_children_updated_filter.children[0]
self.assertEqual(parent_children_term.binding, parent_token)
self.assertEqual(dict(days=1),
parent_children_updated_filter.named_children)
def test_worst_case_must_have_3_filters_and_3_tokens(self):
from itertools import izip
query = these(person
for person, partner in izip(this('person'),
this('partner'))
for rel in this('relation')
if rel.type == 'partnership'
if rel.subject == person
if rel.object == partner
if partner.age > 32)
filters = list(query.filters)
tokens = list(query.tokens)
person, partner, rel = this('person'), this('partner'), this('relation')
expected_rel_type_filter = rel.type == 'partnership'
expected_rel_subject_filter = rel.subject == person
expected_rel_obj_filter = rel.object == partner
expected_partner_age = partner.age > 32
with context(UNPROXIFING_CONTEXT):
self.assertIs(4, len(filters))
self.assertIn(expected_rel_type_filter, filters)
self.assertIn(expected_rel_subject_filter, filters)
self.assertIn(expected_rel_obj_filter, filters)
self.assertIn(expected_partner_age, filters)
self.assertIn(person, tokens)
self.assertIn(rel, tokens)
self.assertIs(3, len(tokens))
self.assertIn(partner, tokens)
def test_basic_queries_building(self):
ok = self.assertEquals
expr = next(parent.title + parent.name
for parent in this('parent')
if (parent.age > 32) & parent.married &
parent.spouse.alive)
parts = self.bubble.parts
# The select part is at the top
ok("this('parent').title + this('parent').name", str(parts[-1]))
# Then the binding
ok("((this('parent').age > 32) and this('parent').married) and "
"this('parent').spouse.alive", str(parts[-2]))
with self.assertRaises(IndexError):
print(str(parts[-3]))
def test_complex_query_building_with_dict():
from xotl.ql.expressions import min_, max_
with bubbling() as current:
d = {parent.age: (min_(child.age), max_(child.age))
for parent in this('parent')
if (parent.age > 32) & parent.children
for child in parent.children
if child.age < 5}
parts = current.bubble.parts
assert len(parts) == 5
def ok(which):
assert str(which) == str(parts.pop(-1))
parent = this('parent')
child = parent.children
ok(parent.age) # The key of the dict is the top-most expression
ok(max_(child.age))
ok(min_(child.age))
ok(child.age < 5)
ok((parent.age > 32) & parent.children)
with pytest.raises(IndexError):
ok(None)
def test_basic_queries_building(self):
ok = self.assertEquals
expr = next(parent.title + parent.name for parent in this('parent')
if (parent.age > 32) & parent.married
& parent.spouse.alive)
parts = self.bubble.parts
# The select part is at the top
ok("this('parent').title + this('parent').name", str(parts[-1]))
# Then the binding
ok(
"((this('parent').age > 32) and this('parent').married) and "
"this('parent').spouse.alive", str(parts[-2]))
with self.assertRaises(IndexError):
print(str(parts[-3]))
def test_thesefy_good_meta(self):
from xotl.ql.core import thesefy
class Meta(type):
def __iter__(self):
from xoutil.objects import nameof
return iter(this(nameof(self)))
@thesefy("Person")
class Person(object):
__metaclass__ = Meta
q = these(who for who in Person if who.age > 30)
q1 = these(who for who in this('Person') if who.age > 30)
with context(UNPROXIFING_CONTEXT):
self.assertEqual(q.selection, q1.selection)
def _test_class(self, Person):
from xotl.ql.expressions import is_instance
q = these((who for who in Person if who.age > 30), limit=100)
# We assume that Person has been thesefied with thesefy('Person')
who = domain = this('Person')
q1 = these(w for w in domain if is_instance(w, Person) if w.age > 30)
is_filter = is_instance(who, Person)
age_filter = who.age > 30
with context(UNPROXIFING_CONTEXT):
self.assertEqual(2, len(q.filters))
self.assertEqual(2, len(q1.filters))
self.assertIn(is_filter, q.filters)
self.assertIn(is_filter, q1.filters)
self.assertIn(age_filter, q.filters)
self.assertIn(age_filter, q1.filters)
self.assertEqual(q.selection, q1.selection)
self.assertEqual(q.tokens, q1.tokens)
def test_right_bindings(self):
these((parent, child) for parent in this('parent')
if parent.children.updated_since(days=1)
for child in parent.children if child.age < 4)
# The query has two filters:
#
# this('parent').children & (count(this('parent').children) > 4)
# this('parent').children.age < 5
#
# If we regard every term `this('parent').children` as the *token*,
# what would be the meaning of the first condition? How do we
# distinguish from conditions over the named-token and the
# expression that generates the token?
# i.e in `for child in parent.children`, the `child` token
# is *not* the same as the term `parent.children`.
#
# Now the token of the relevant query might help, but then the
# machine should not strip those tokens from query-parts.
parts = self.bubble.parts
self.assertEqual(0, len(parts))
def test_theres_a_token_for_partnership(self):
from itertools import izip
query = these(
(person, partner)
for person, partner in izip(this('person'), this('partner'))
for rel in this('relation') if rel.type == 'partnership'
if (rel.subject == person) & (rel.object == partner))
tokens = list(query.tokens)
person, partner, rel = this('person'), this('partner'), this(
'relation')
with context(UNPROXIFING_CONTEXT):
self.assertIs(3, len(tokens))
self.assertIn(rel, tokens)
self.assertIn(person, tokens)
self.assertIn(partner, tokens)
def test_is_a_partnership_is_not_forgotten(self):
from itertools import izip
next((person, partner)
for person, partner in izip(this('person'), this('partner'))
for rel in this('relation') if rel.type == 'partnership'
if (rel.subject == person) & (rel.object == partner))
parts = self.bubble.parts
tokens = self.bubble.tokens
ok = lambda x: self.assertEqual(str(x), str(parts.pop(-1)))
person = this('person')
partner = this('partner')
rel = this('relation')
self.assertIn(person, tokens)
self.assertIn(partner, tokens)
self.assertIn(rel, tokens)
ok((rel.subject == person) & (rel.object == partner))
ok(rel.type == 'partnership')
with self.assertRaises(IndexError):
ok(None)
def test_worst_case_must_have_3_filters_and_3_tokens(self):
from itertools import izip
next(person
for person, partner in izip(this('person'), this('partner'))
for rel in this('relation') if rel.type == 'partnership'
if rel.subject == person if rel.object == partner
if partner.age > 32)
parts = self.bubble.parts
tokens = self.bubble.tokens
ok = lambda x: self.assertEqual(str(x), str(parts.pop(-1)))
person = this('person')
partner = this('partner')
rel = this('relation')
self.assertIn(person, tokens)
self.assertIn(partner, tokens)
self.assertIn(rel, tokens)
ok(partner.age > 32)
ok(rel.object == partner)
ok(rel.subject == person)
ok(rel.type == 'partnership')
with self.assertRaises(IndexError):
ok(None)
def test_undetected_particles(self):
from xotl.ql.expressions import any_
next(parent for parent in this('parent')
if any_(child for child in parent.children if child.age < 6))
parts = self.bubble.parts
self.assertIs(0, len(parts))
def __iter__(self):
from xoutil.objects import nameof
return iter(this(nameof(self)))