[entity/hooks] fix regression introduced by 4ba11607d84a on create_entity, attributes weren't cached, but they are since 4ba11607d84a and this triggered a bug: used values may be transformed by hooks (e.g. TidyHtmlFields), ending in invalid value in the cache. This is the regression. Now, set_attributes used to update the attributes cache while suffering from the very same pb. This is the now fixed old bug. Transformed attributes are now recorded in a transaction shared variable, and those are omitted from the client cache.

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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)