reference reftype should be enforced

[divmod-migration]

reftype doesn't do the most obvious thing it could do:

from axiom.store import Store
from axiom.item import Item
from axiom.attributes import reference

class X(Item):
foo = reference()

class Y(Item):
bar = reference(reftype=X)

class Z(Item):
baz = reference()

def main():
s = Store()
print Y(store=s, bar=Z(store=s)).bar

if name == 'main':
main()

Instead, I guess it does other things - like serve as documentation about what you should be putting here. Also it provides a deletion optimization (which ends up being incorrect if you disregard the documentation purpose and make the reference to a different type ...)

It seems Axiom should not allow assignment of the wrong type.

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Imported from Launchpad using lp2gh.

• date created: 2013-07-26T21:06:33Z
• owner: exarkun
• the launchpad url was https://bugs.launchpad.net/bugs/1205490