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from sqlalchemy import func, Integer, String, ForeignKey
from sqlalchemy.orm import relationship, Session, aliased
from sqlalchemy.testing.schema import Column
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.ext import hybrid
from sqlalchemy.testing import eq_, AssertsCompiledSQL, assert_raises_message
from sqlalchemy.testing import fixtures
from sqlalchemy import inspect
class PropertyComparatorTest(fixtures.TestBase, AssertsCompiledSQL):
__dialect__ = 'default'
def _fixture(self):
Base = declarative_base()
class UCComparator(hybrid.Comparator):
def __eq__(self, other):
if other is None:
return self.expression == None
else:
return func.upper(self.expression) == func.upper(other)
class A(Base):
__tablename__ = 'a'
id = Column(Integer, primary_key=True)
_value = Column("value", String)
@hybrid.hybrid_property
def value(self):
return self._value - 5
@value.comparator
def value(cls):
return UCComparator(cls._value)
@value.setter
def value(self, v):
self._value = v + 5
return A
def test_set_get(self):
A = self._fixture()
a1 = A(value=5)
eq_(a1._value, 10)
eq_(a1.value, 5)
def test_value(self):
A = self._fixture()
eq_(str(A.value==5), "upper(a.value) = upper(:upper_1)")
def test_aliased_value(self):
A = self._fixture()
eq_(str(aliased(A).value==5), "upper(a_1.value) = upper(:upper_1)")
def test_query(self):
A = self._fixture()
sess = Session()
self.assert_compile(
sess.query(A.value),
"SELECT a.value AS a_value FROM a"
)
def test_aliased_query(self):
A = self._fixture()
sess = Session()
self.assert_compile(
sess.query(aliased(A).value),
"SELECT a_1.value AS a_1_value FROM a AS a_1"
)
def test_aliased_filter(self):
A = self._fixture()
sess = Session()
self.assert_compile(
sess.query(aliased(A)).filter_by(value="foo"),
"SELECT a_1.value AS a_1_value, a_1.id AS a_1_id "
"FROM a AS a_1 WHERE upper(a_1.value) = upper(:upper_1)"
)
class PropertyExpressionTest(fixtures.TestBase, AssertsCompiledSQL):
__dialect__ = 'default'
def _fixture(self):
Base = declarative_base()
class A(Base):
__tablename__ = 'a'
id = Column(Integer, primary_key=True)
_value = Column("value", String)
@hybrid.hybrid_property
def value(self):
return int(self._value) - 5
@value.expression
def value(cls):
return func.foo(cls._value) + cls.bar_value
@value.setter
def value(self, v):
self._value = v + 5
@hybrid.hybrid_property
def bar_value(cls):
return func.bar(cls._value)
return A
def _relationship_fixture(self):
Base = declarative_base()
class A(Base):
__tablename__ = 'a'
id = Column(Integer, primary_key=True)
b_id = Column('bid', Integer, ForeignKey('b.id'))
_value = Column("value", String)
@hybrid.hybrid_property
def value(self):
return int(self._value) - 5
@value.expression
def value(cls):
return func.foo(cls._value) + cls.bar_value
@value.setter
def value(self, v):
self._value = v + 5
@hybrid.hybrid_property
def bar_value(cls):
return func.bar(cls._value)
class B(Base):
__tablename__ = 'b'
id = Column(Integer, primary_key=True)
as_ = relationship("A")
return A, B
def test_info(self):
A = self._fixture()
inspect(A).all_orm_descriptors.value.info["some key"] = "some value"
eq_(
inspect(A).all_orm_descriptors.value.info,
{"some key": "some value"}
)
def test_set_get(self):
A = self._fixture()
a1 = A(value=5)
eq_(a1._value, 10)
eq_(a1.value, 5)
def test_expression(self):
A = self._fixture()
self.assert_compile(
A.value,
"foo(a.value) + bar(a.value)"
)
def test_any(self):
A, B = self._relationship_fixture()
sess = Session()
self.assert_compile(
sess.query(B).filter(B.as_.any(value=5)),
"SELECT b.id AS b_id FROM b WHERE EXISTS "
"(SELECT 1 FROM a WHERE b.id = a.bid "
"AND foo(a.value) + bar(a.value) = :param_1)"
)
def test_aliased_expression(self):
A = self._fixture()
self.assert_compile(
aliased(A).value,
"foo(a_1.value) + bar(a_1.value)"
)
def test_query(self):
A = self._fixture()
sess = Session()
self.assert_compile(
sess.query(A).filter_by(value="foo"),
"SELECT a.value AS a_value, a.id AS a_id "
"FROM a WHERE foo(a.value) + bar(a.value) = :param_1"
)
def test_aliased_query(self):
A = self._fixture()
sess = Session()
self.assert_compile(
sess.query(aliased(A)).filter_by(value="foo"),
"SELECT a_1.value AS a_1_value, a_1.id AS a_1_id "
"FROM a AS a_1 WHERE foo(a_1.value) + bar(a_1.value) = :param_1"
)
class PropertyValueTest(fixtures.TestBase, AssertsCompiledSQL):
__dialect__ = 'default'
def _fixture(self, assignable):
Base = declarative_base()
class A(Base):
__tablename__ = 'a'
id = Column(Integer, primary_key=True)
_value = Column("value", String)
@hybrid.hybrid_property
def value(self):
return self._value - 5
if assignable:
@value.setter
def value(self, v):
self._value = v + 5
return A
def test_nonassignable(self):
A = self._fixture(False)
a1 = A(_value=5)
assert_raises_message(
AttributeError,
"can't set attribute",
setattr, a1, 'value', 10
)
def test_nondeletable(self):
A = self._fixture(False)
a1 = A(_value=5)
assert_raises_message(
AttributeError,
"can't delete attribute",
delattr, a1, 'value'
)
def test_set_get(self):
A = self._fixture(True)
a1 = A(value=5)
eq_(a1.value, 5)
eq_(a1._value, 10)
class MethodExpressionTest(fixtures.TestBase, AssertsCompiledSQL):
__dialect__ = 'default'
def _fixture(self):
Base = declarative_base()
class A(Base):
__tablename__ = 'a'
id = Column(Integer, primary_key=True)
_value = Column("value", String)
@hybrid.hybrid_method
def value(self, x):
return int(self._value) + x
@value.expression
def value(cls, value):
return func.foo(cls._value, value) + value
return A
def test_call(self):
A = self._fixture()
a1 = A(_value=10)
eq_(a1.value(7), 17)
def test_expression(self):
A = self._fixture()
self.assert_compile(
A.value(5),
"foo(a.value, :foo_1) + :foo_2"
)
def test_info(self):
A = self._fixture()
inspect(A).all_orm_descriptors.value.info["some key"] = "some value"
eq_(
inspect(A).all_orm_descriptors.value.info,
{"some key": "some value"}
)
def test_aliased_expression(self):
A = self._fixture()
self.assert_compile(
aliased(A).value(5),
"foo(a_1.value, :foo_1) + :foo_2"
)
def test_query(self):
A = self._fixture()
sess = Session()
self.assert_compile(
sess.query(A).filter(A.value(5)=="foo"),
"SELECT a.value AS a_value, a.id AS a_id "
"FROM a WHERE foo(a.value, :foo_1) + :foo_2 = :param_1"
)
def test_aliased_query(self):
A = self._fixture()
sess = Session()
a1 = aliased(A)
self.assert_compile(
sess.query(a1).filter(a1.value(5)=="foo"),
"SELECT a_1.value AS a_1_value, a_1.id AS a_1_id "
"FROM a AS a_1 WHERE foo(a_1.value, :foo_1) + :foo_2 = :param_1"
)
def test_query_col(self):
A = self._fixture()
sess = Session()
self.assert_compile(
sess.query(A.value(5)),
"SELECT foo(a.value, :foo_1) + :foo_2 AS anon_1 FROM a"
)
def test_aliased_query_col(self):
A = self._fixture()
sess = Session()
self.assert_compile(
sess.query(aliased(A).value(5)),
"SELECT foo(a_1.value, :foo_1) + :foo_2 AS anon_1 FROM a AS a_1"
)
|
