Avoid to update inlined relation column to NULL when deleting entities
When deleting entities, cubicweb run a rql DELETE on all relations to trigger hooks.
For an inlined relation this also mean set the column to NULL. This operation
may fail if there's additional constraints on the column.
Also this is a weird and useless behavior since deleting the entity row will by
definition delete the relation.
We still doesn't handle the case where both subject and object are going to be
deleted because rows need to be deleted in a particular order that cubicweb
doesn't handle.
Add a test checking UPDATE does not occur but hooks are correctly called.
Closes #17236690
# copyright 2003-2010 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
# 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
# Software Foundation, either version 2.1 of the License, or (at your option)
# any later version.
#
# CubicWeb is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
# details.
#
# You should have received a copy of the GNU Lesser General Public License along
# with CubicWeb. If not, see <http://www.gnu.org/licenses/>.
import gettext
from six import PY3
class cwGNUTranslations(gettext.GNUTranslations):
# The encoding of a msgctxt and a msgid in a .mo file is
# msgctxt + "\x04" + msgid (gettext version >= 0.15)
CONTEXT_ENCODING = "%s\x04%s"
def pgettext(self, context, message):
ctxt_msg_id = self.CONTEXT_ENCODING % (context, message)
missing = object()
tmsg = self._catalog.get(ctxt_msg_id, missing)
if tmsg is missing:
if self._fallback:
return self._fallback.pgettext(context, message)
return message
# Encode the Unicode tmsg back to an 8-bit string, if possible
if self._output_charset:
return tmsg.encode(self._output_charset)
elif self._charset:
return tmsg.encode(self._charset)
return tmsg
def lpgettext(self, context, message):
ctxt_msg_id = self.CONTEXT_ENCODING % (context, message)
missing = object()
tmsg = self._catalog.get(ctxt_msg_id, missing)
if tmsg is missing:
if self._fallback:
return self._fallback.lpgettext(context, message)
return message
if self._output_charset:
return tmsg.encode(self._output_charset)
return tmsg.encode(locale.getpreferredencoding())
def npgettext(self, context, msgid1, msgid2, n):
ctxt_msg_id = self.CONTEXT_ENCODING % (context, msgid1)
try:
tmsg = self._catalog[(ctxt_msg_id, self.plural(n))]
if self._output_charset:
return tmsg.encode(self._output_charset)
elif self._charset:
return tmsg.encode(self._charset)
return tmsg
except KeyError:
if self._fallback:
return self._fallback.npgettext(context, msgid1, msgid2, n)
if n == 1:
return msgid1
else:
return msgid2
def lnpgettext(self, context, msgid1, msgid2, n):
ctxt_msg_id = self.CONTEXT_ENCODING % (context, msgid1)
try:
tmsg = self._catalog[(ctxt_msg_id, self.plural(n))]
if self._output_charset:
return tmsg.encode(self._output_charset)
return tmsg.encode(locale.getpreferredencoding())
except KeyError:
if self._fallback:
return self._fallback.lnpgettext(context, msgid1, msgid2, n)
if n == 1:
return msgid1
else:
return msgid2
if PY3:
ugettext = gettext.GNUTranslations.gettext
def upgettext(self, context, message):
ctxt_message_id = self.CONTEXT_ENCODING % (context, message)
missing = object()
tmsg = self._catalog.get(ctxt_message_id, missing)
if tmsg is missing:
# XXX logilab patch for compat w/ catalog generated by cw < 3.5
return self.ugettext(message)
if self._fallback:
return self._fallback.upgettext(context, message)
return unicode(message)
return tmsg
def unpgettext(self, context, msgid1, msgid2, n):
ctxt_message_id = self.CONTEXT_ENCODING % (context, msgid1)
try:
tmsg = self._catalog[(ctxt_message_id, self.plural(n))]
except KeyError:
if self._fallback:
return self._fallback.unpgettext(context, msgid1, msgid2, n)
if n == 1:
tmsg = unicode(msgid1)
else:
tmsg = unicode(msgid2)
return tmsg
def translation(domain, localedir=None, languages=None,
class_=None, fallback=False, codeset=None):
if class_ is None:
class_ = cwGNUTranslations
return gettext.translation(domain, localedir=localedir,
languages=languages, class_=class_,
fallback=fallback, codeset=codeset)