[rtags] Allow to 'derive' rtags
Since some releases, rtags (structure underlying uicfg) have selector and may be
copied using something like:
new_rtags = deepcopy(original_rtags)
new_rtags.__module__ = __name__
new_rtags.__select__ = custom_selector
The problem is that starting from that, both rtags wil diverge and changes in
original_rtags won't be considered, while we usually want to set a few specific
rules only in new_rtags. To fix this problem, this cset introduces the notion of
"derivated/parent" rtag, eg:
new_rtags = original_rtags.derive(__name__, custom_selector)
Beside easier copying, when using the above method changes in original_rtags
which are not overriden by new_rtags will be considered since it only hold its
specific rules but look among its parent chain for non-found keys.
Along the way, flake8 unittest_rtags.
Closes #16164880
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# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
#
# This file is part of CubicWeb.
#
# CubicWeb is free software: you can redistribute it and/or modify it under the
# terms of the GNU Lesser General Public License as published by the Free
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# FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
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# You should have received a copy of the GNU Lesser General Public License along
# with CubicWeb. If not, see <http://www.gnu.org/licenses/>.
"""
"""
from AccessControl import getSecurityManager
from cubicweb.dbapi import connect, Connection, Cursor
from cubicweb.common.utils import ResultSet, ResultSetIterator, ResultSetRow, Entity
Connection.__allow_access_to_unprotected_subobjects__ = 1
Cursor.__allow_access_to_unprotected_subobjects__ = 1
ResultSet.__allow_access_to_unprotected_subobjects__ = 1
ResultSetIterator.__allow_access_to_unprotected_subobjects__ = 1
ResultSetRow.__allow_access_to_unprotected_subobjects__ = 1
Entity.__allow_access_to_unprotected_subobjects__ = 1
CNX_CACHE = {}
def get_connection(context, user=None, password=None,
host=None, database=None, group='cubicweb'):
"""get a connection on an cubicweb server"""
request = context.REQUEST
zope_user = getSecurityManager().getUser()
if user is None:
user = zope_user.getId()
key = (user, host, database)
try:
return CNX_CACHE[key]
except KeyError:
if password is None:
password = zope_user._getPassword()
cnx = connect(user, password, host, database, group)
CNX_CACHE[key] = cnx
return cnx