def size(self):
size = 0
for member in self.members:
if IPerson.providedBy(member):
size = size + 1
elif IGroup.providedBy(member):
size = size + len(member.members)
return size
def size(self):
size = 0
for member in self.members:
if IPerson.providedBy(member):
size = size + 1
elif IGroup.providedBy(member):
size = size + len(member.members)
return size
def enforceMembershipConstraints(event):
"""Enforce membership constraints (IBeforeRelationshipEvent subscriber)."""
# XXX look through all the IBeforeRelationshipEvent subscribers,
# if there are any, and convert them to something different.
if not IBeforeRelationshipEvent.providedBy(event):
return
if event.rel_type != URIMembership:
return
if ((event.role1, event.role2) != (URIMember, URIGroup) and
(event.role1, event.role2) != (URIGroup, URIMember)):
raise InvalidRelationship('Membership must have one member'
' and one group.')
if IBaseResource.providedBy(event[URIMember]):
raise InvalidRelationship("Resources cannot be members of a group.")
if not IGroup.providedBy(event[URIGroup]):
raise InvalidRelationship('Groups must provide IGroup.')
if IGroup.providedBy(event[URIMember]):
raise InvalidRelationship("Groups cannot be members of a group anymore.")
if isTransitiveMember(event[URIGroup], event[URIMember]):
raise InvalidRelationship('No cycles are allowed.')
def enforceMembershipConstraints(event):
"""Enforce membership constraints (IBeforeRelationshipEvent subscriber)."""
# XXX look through all the IBeforeRelationshipEvent subscribers,
# if there are any, and convert them to something different.
if not IBeforeRelationshipEvent.providedBy(event):
return
if event.rel_type != URIMembership:
return
if ((event.role1, event.role2) != (URIMember, URIGroup)
and (event.role1, event.role2) != (URIGroup, URIMember)):
raise InvalidRelationship('Membership must have one member'
' and one group.')
if IBaseResource.providedBy(event[URIMember]):
raise InvalidRelationship("Resources cannot be members of a group.")
if not IGroup.providedBy(event[URIGroup]):
raise InvalidRelationship('Groups must provide IGroup.')
if IGroup.providedBy(event[URIMember]):
raise InvalidRelationship(
"Groups cannot be members of a group anymore.")
if isTransitiveMember(event[URIGroup], event[URIMember]):
raise InvalidRelationship('No cycles are allowed.')
