[dbapi] makes anonymous_connection a computed property
The current implementation is a boolean flag set manually by client code after
connection creation. This led to different way to decide a anonymous_connection
should be True (eg. different in the test than in the actual application code).
It should not be client responsibility to set this flag.
``cnx.anonymous_connection`` is now a purely computed property. Connection with user in the
"guests" group are anonymous, the other ain't.
``Session.anonymous_session`` is computed from ``cnx.anonymous_connection`` and get
the updated behavior transparently.
Closes #2953943
try:
rtype, = __args__
except ValueError:
print 'USAGE: cubicweb-ctl shell <instance> detect_cycle.py -- <relation type>'
print
graph = {}
for fromeid, toeid in rql('Any X,Y WHERE X %s Y' % rtype):
graph.setdefault(fromeid, []).append(toeid)
from logilab.common.graph import get_cycles
for cycle in get_cycles(graph):
print 'cycle', '->'.join(str(n) for n in cycle)