Account for new psycopg2 exception classes mapping
From psycopg2 >= 2.8, specific exceptions are raised corresponding to
postgresql errors. E.g. a CheckViolation exception is raised instead of
a generic IntegrityError previously when a constraint violation occurs.
The way we intercept database errors, especially for constraint
violation, is not compliant with that because we do not catch subclasses
of IntegrityError in native source's doexec() method.
We fix this by checking for the presence of IntegrityError error in
exception class's mro. This is still overcomplicated and clumsy, because
we still use string comparison, but this is the best we can do as far as
I know. (A better fix would be 'isinstance(ex, IntegrityError)' but we
have no engine-independent error classes, so this is not possible.
Something like sqlalchemy's DBAPI Errors [1] might help:
https://docs.sqlalchemy.org/en/latest/errors.html#dbapi-errors)
CubicWeb semantic web framework
===============================
CubicWeb is a entities / relations based knowledge management system
developped at Logilab.
This package contains:
- a repository server
- a RQL command line client to the repository
- an adaptative modpython interface to the server
- a bunch of other management tools
Install
-------
More details at https://cubicweb.readthedocs.io/en/3.26/book/admin/setup
Getting started
---------------
Execute::
apt-get install cubicweb cubicweb-dev cubicweb-blog
cubicweb-ctl create blog myblog
cubicweb-ctl start -D myblog
sensible-browser http://localhost:8080/
Details at https://cubicweb.readthedocs.io/en/3.26/tutorials/base/blog-in-five-minutes
You can also look at the latest builds on Logilab's jenkins:
https://jenkins.logilab.org/
Documentation
-------------
Look in the doc/ subdirectory or read https://cubicweb.readthedocs.io/en/3.26/
CubicWeb includes the Entypo pictograms by Daniel Bruce — http://www.entypo.com
Contributing
------------
Patches should be submitted by email at the cubicweb-devel@lists.cubicweb.org
mailing list in order to get reviewed by project integrators or any community
member.
The simplest way of send patches is to use the ``hg email`` command available
through the *patchbomb* extension of Mercurial. Preferably, patches should be
*in the message body* of emails. When submitting a revised version of a patch
series, a prefix indicating the iteration number ``<n>`` of the series should
be added to email subject prefixes; this can be achieved by specifying a
``--flag v<n>`` option to ``hg email`` command. If needed you can also use the
--in-reply-to option.
Examples:
hg email --to cubicweb-devel@lists.cubicweb.org --intro -r <start>::<end>
hg email --flag V2 --to cubicweb-devel@lists.cubicweb.org -r <start>::<end>
If you have any questions you can also come on Logilab's public XMPP room using
a XMPP client: public@conference.jabber.logilab.org
Mailing list: https://lists.cubicweb.org/mailman/listinfo/cubicweb-devel
Patchbomb extension: https://www.mercurial-scm.org/wiki/PatchbombExtension
Good practice on sending email patches: https://www.mercurial-scm.org/wiki/ContributingChanges#Emailing_patches