[CWEP002] properly handle serialization of computed relations
We now:
* have CWComputedRelation in the bootstrap schema to store computed relations
* properly serialize/deserialize it
* test first if the database has been migrated and contains the related table
Related to #3546717
[jcr: adjust unittest_querier to pass with the added entity type]
from base64 import b64decode, b64encode
try:
uri, newdn = __args__
except ValueError:
print 'USAGE: cubicweb-ctl shell <instance> ldap_change_base_dn.py -- <ldap source uri> <new dn>'
print
print 'you should not have updated your sources file yet'
olddn = repo.sources_by_uri[uri].config['user-base-dn']
assert olddn != newdn
raw_input("Ensure you've stopped the instance, type enter when done.")
for eid, extid in sql("SELECT eid, extid FROM entities WHERE source='%s'" % uri):
olduserdn = b64decode(extid)
newuserdn = olduserdn.replace(olddn, newdn)
if newuserdn != olduserdn:
print olduserdn, '->', newuserdn
sql("UPDATE entities SET extid='%s' WHERE eid=%s" % (b64encode(newuserdn), eid))
commit()
print 'you can now update the sources file to the new dn and restart the instance'