| author | Denis Laxalde <denis.laxalde@logilab.fr> |
| Fri, 15 Mar 2019 12:12:23 +0100 | |
| changeset 12523 | 4d68d20427de |
| parent 11057 | 0b59724cb3f2 |
| permissions | -rw-r--r-- |
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10589
7c23b7de2b8d
[py3k] print function
Samuel Trégouët <samuel.tregouet@logilab.fr>
parents:
6198
diff
changeset
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1 |
from __future__ import print_function |
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6198
f8dea560703f
add a small c-c shell script to detect cycle for a given relation
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
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2 |
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f8dea560703f
add a small c-c shell script to detect cycle for a given relation
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
3 |
try: |
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f8dea560703f
add a small c-c shell script to detect cycle for a given relation
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
4 |
rtype, = __args__ |
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f8dea560703f
add a small c-c shell script to detect cycle for a given relation
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
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5 |
except ValueError: |
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10589
7c23b7de2b8d
[py3k] print function
Samuel Trégouët <samuel.tregouet@logilab.fr>
parents:
6198
diff
changeset
|
6 |
print('USAGE: cubicweb-ctl shell <instance> detect_cycle.py -- <relation type>') |
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7c23b7de2b8d
[py3k] print function
Samuel Trégouët <samuel.tregouet@logilab.fr>
parents:
6198
diff
changeset
|
7 |
print() |
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6198
f8dea560703f
add a small c-c shell script to detect cycle for a given relation
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
8 |
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f8dea560703f
add a small c-c shell script to detect cycle for a given relation
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
9 |
graph = {} |
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f8dea560703f
add a small c-c shell script to detect cycle for a given relation
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
10 |
for fromeid, toeid in rql('Any X,Y WHERE X %s Y' % rtype): |
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f8dea560703f
add a small c-c shell script to detect cycle for a given relation
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
11 |
graph.setdefault(fromeid, []).append(toeid) |
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f8dea560703f
add a small c-c shell script to detect cycle for a given relation
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
12 |
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f8dea560703f
add a small c-c shell script to detect cycle for a given relation
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
13 |
from logilab.common.graph import get_cycles |
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f8dea560703f
add a small c-c shell script to detect cycle for a given relation
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
14 |
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f8dea560703f
add a small c-c shell script to detect cycle for a given relation
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff
changeset
|
15 |
for cycle in get_cycles(graph): |
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10589
7c23b7de2b8d
[py3k] print function
Samuel Trégouët <samuel.tregouet@logilab.fr>
parents:
6198
diff
changeset
|
16 |
print('cycle', '->'.join(str(n) for n in cycle)) |