def modifyObjectAction(self, object, new_attr):
"""
Modify the object using an action.
The result is the action which has already been executed.
"""
old_id = object.id
object.checkEditable()
old_attr = object.getAttributes()
new_id = new_attr["id"]
domain = object.update_domain
if old_id != new_id:
existing = self.get(new_id)
if (existing is not None) and (existing is not object):
duplicateIdentifierError(new_id)
apply_updates = Updates(Update(domain, "delete", old_id), Update(domain, "create", new_id))
unapply_updates = Updates(Update(domain, "delete", new_id), Update(domain, "create", old_id))
else:
apply_updates = Updates(Update(domain, "update", new_id))
unapply_updates = apply_updates
action = Action(
ActionHandler(apply_updates, self._setattr, object, new_attr),
ActionHandler(unapply_updates, self._setattr, object, old_attr),
)
if old_id != new_id and object.original_id:
set_original = Action(
ActionHandler(apply_updates, self._set_original_id, object, None),
ActionHandler(unapply_updates, self._set_original_id, object, object.original_id),
)
action.chain(set_original)
action.apply()
if old_id != new_id:
self._updateObjects(action, object.references, object, old_attr)
self._updateObjects(action, object.getReferents())
object.onModifyAction(action, old_attr)
return action
def checkIdentifierUnicity(self, identifier):
if identifier in self.resources:
duplicateIdentifierError(identifier)