misc/scripts/detect_cycle.py
author Julien Cristau <julien.cristau@logilab.fr>
Tue, 16 Feb 2016 10:52:38 +0100
changeset 11114 468b91aabd9d
parent 6198 f8dea560703f
child 10589 7c23b7de2b8d
permissions -rw-r--r--
[web/views] fix editcontroller regression unittest_views_basecontrollers.py's EditControllerTC.test_edit_mandatory_inlined3_object regressed with changeset dcbb64d3a1d9 because it relied on POSTing nonexisting eids. This seems like a silly idea, but let's keep the behaviour unchanged.
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try:
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    rtype, = __args__
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except ValueError:
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    print 'USAGE: cubicweb-ctl shell <instance> detect_cycle.py -- <relation type>'
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    print
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graph = {}
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for fromeid, toeid in rql('Any X,Y WHERE X %s Y' % rtype):
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    graph.setdefault(fromeid, []).append(toeid)
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from logilab.common.graph import get_cycles
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for cycle in get_cycles(graph):
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    print 'cycle', '->'.join(str(n) for n in cycle)