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misc/scripts/detect_cycle.py
author Julien Cristau <julien.cristau@logilab.fr>
Wed, 05 Mar 2014 16:58:14 +0100
changeset 9573 99166335a8e0
parent 6198 f8dea560703f
child 10589 7c23b7de2b8d
permissions -rw-r--r--
Move setting session.mtime from dbapi to web session manager clean_session was broken since the switch away from dbapi on the web side, since session.mtime wasn't being set anywhere.


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)
cubicweb