class Car(Entity):
id = UniqueIdAttribute()
make = Attribute(immutable=True)
model = Attribute(immutable=True)
wheels = QualifiedMultiValueAttribute(WheelPosition, default={})
extras = MultiValueAttribute(default=set())
registered = Attribute(default=False)
def __init__(self,
make: str,
model: str,
*,
listener: StateChangedListener = None):
super().__init__()
if listener:
# create notifyer and add listener
StateChangedNotifyerExtension(self).add_listener(listener)
self.make = make
self.model = model
def change_tire(self, wheel_pos: WheelPosition, tire: Tire) -> None:
try:
wheel = self.wheels[wheel_pos]
except KeyError:
raise ValueError(f"No {wheel_pos} wheel") from None
wheel.tire = tire
# setting attribute of nested entity doesn't trigger change
# notification, so it has to be done explicitely
self.state_changed()
def __repr__(self):
"""repr(self)"""
return f"<{self.__class__.__name__}: {self.id} "
class VO3(ValueObject):
s1 = Attribute()
s2 = Attribute()
def __init__(self, s1='abc', s2='xyz'):
self.s1 = s1
self.s2 = s2
class VO1(ValueObject):
x = Attribute()
y = Attribute()
def __init__(self, x=1, y=2):
self.x = x
self.y = y
class VO5(ValueObject):
v1 = Attribute()
v4 = Attribute()
a = Attribute()
def __init__(self, a, x=7, s5=9):
self.a = a
self.v1 = VO1(x=x)
self.v4 = VO4(s5=s5)
class Tire(Entity):
id = UniqueIdAttribute()
make = Attribute(immutable=True)
size = Attribute(immutable=True)
def __init__(self, make: str, size: str) -> None:
super().__init__()
self.make = make
self.size = size
class VO4(VO3):
s3 = Attribute()
s4 = Attribute()
s5 = Attribute()
def __init__(self, s3=1, s4=2, s5=3):
super(VO4, self).__init__()
self.s3 = s3
self.s4 = s4
self.s5 = s5
class Wheel(Entity):
id = UniqueIdAttribute()
type_of_rim = Attribute(immutable=True)
tire = Attribute(default=None)
def __init__(self, type_of_rim: RimType, tire: Optional[Tire] = None) \
-> None:
super().__init__()
self.type_of_rim = type_of_rim
self.tire = tire
class Person(Entity):
id = Attribute(immutable=True)
first_name = Attribute()
last_name = Attribute()
date_of_birth = Attribute()
def __init__(self, first_name, last_name, date_of_birth):
self.id = str(hash((first_name, last_name, date_of_birth)))
self.first_name = first_name
self.last_name = last_name
self.date_of_birth = date_of_birth
class TestComp2(Component):
"""TestComp2"""
attr1 = Attribute()
attr2 = Attribute()
def meth(self):
pass
attr3 = Attribute()
@property
def prop(self):
pass
class VO2(VO1):
z = Attribute()
def __init__(self, z=3):
super(VO2, self).__init__()
self.z = z
class TestComp6(TestComp5):
"""TestComp6"""
c = Attribute()
def __init__(self, a, b, c):
self.a = a
self.b = b
self.c = c
class Prospect(Person):
interests = Attribute()
def __init__(self,
first_name,
last_name,
date_of_birth,
interests='not known yet'):
super().__init__(first_name, last_name, date_of_birth)
self.interests = interests
class Comp1(Component):
x = Attribute()
def __init__(self, x):
self.x = x
def __setattr__(self, name, value): # noqa: D103
super().__setattr__(name, value)
try:
notifyer = StateChangedNotifyer[self]
except ValueError:
pass
else:
notifyer.notify_state_changed(self)
class TestComp5(TestComp4):
"""TestComp5"""
a = Attribute()
b = Attribute()
class DummyEntity(Entity):
id = Attribute(immutable=True)
def __init__(self):
self.id = id(self)
class TestEntity2(Entity):
id = Attribute(immutable=True, )
def __init__(self, id):
super().__init__(id)