symmetric relations: replace bogus rql2sql translation by a hook
The hook ensures X r Y => Y r X iff r is symmetric.
The rql-no-hook data importer receives a small amendment but note
that:
* there exist no test for it
* its actual semantics are undefined
Hence we cannot prove this hunk breaks nothing, because we cannot
prove anything.
Closes #3259713.
from cubicweb import UnknownEid
source, = __args__
sql("DELETE FROM entities WHERE type='Int'")
ecnx = session.cnxset.connection(source)
for e in rql('Any X WHERE X cw_source S, S name %(name)s', {'name': source}).entities():
meta = e.cw_metainformation()
assert meta['source']['uri'] == source
try:
suri = ecnx.describe(meta['extid'])[1]
except UnknownEid:
print 'cant describe', e.cw_etype, e.eid, meta
continue
if suri != 'system':
try:
print 'deleting', e.cw_etype, e.eid, suri, e.dc_title().encode('utf8')
repo.delete_info(session, e, suri, scleanup=e.eid)
except UnknownEid:
print ' cant delete', e.cw_etype, e.eid, meta
commit()