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pgsql: fix items order: Due to a misinterpretation, items where returned in wrong order when RSM was used. Pubsub vanilla `max_items` is reversing the items order to get last items, but when this attribute is not used (RSM being used or not), the items must be in chronological order. This patch fixes it, so RSM returns oldest items by defaut, and empty `<before/>` must be used to get last page (and thus most recent items). Items are always finally ordered chronologically inside the returned page (default by `update` time, but this can be modified when a specific order is requested). Reference field is also fixed to use `updated` instead of `item_id` when item are ordered by `update`.
author Goffi <goffi@goffi.org>
date Sun, 06 Jun 2021 19:42:57 +0200
parents 074037832daf
children 7c9792f934a2
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SàT PubSub

Copyright (c) 2012-2021 Jérôme Poisson
Copyright (c) 2014-2016 Adrien Cossa
Copyright (c) 2003-2011 Ralph Meijer

SàT PubSub is a PubSub/PEP component for XMPP


** LICENSE **

Sàt PubSub is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

Sàt PubSub 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 Affero General Public License for more details.

You should have received a copy of the GNU Affero General Public License
along with Sàt PubSub.  If not, see <http://www.gnu.org/licenses/>.


** ABOUT **

SàT PubSub is a XMPP PubSub/PEP component (XEP-0060) It's based on Ralph
Meijer's Idavoll, and provides special features necessary for the « Salut à
Toi » project (https://salut-a-toi.org), but it can also be used for any other
XMPP project.  The use of a standard external component allow to use this
features with most XMPP servers.  One of the main addition is fine access
tuning for PubSub, which allow the publication of items for only some groups,
even if the entire node is open. The protocol is explained on
https://www.goffi.org/post/2012/06/24/Fine-access-tuning-for-PubSub for the
moment, and a protoxep should be proposed to the XSF in the future...


** INSTALLATION **

Please check doc/ directory


** CREDITS **

The base project (Idavoll) was made by Ralph Meijer and can be found on
http://idavoll.ik.nu/.
The main authors of SàT Pubsub (beside original work) are Jérôme Poisson and
Adrien Cossa.

Idavoll has also received a contribution which have been inherited in SàT
Pubsub from Christopher Zorn.

SàT Pubsub has received contributions from:

- Arnaud Joset
- W. Martin Borgert


** CONTRIBUTIONS **

Here are the URIs you can use to publish/retrieve tickets or merge requests:

tickets: xmpp:pubsub.goffi.org?;node=org.salut-a-toi.tickets%3A0 (please use "SàT Pubsub" label)
merge requests: xmpp:pubsub.goffi.org?;node=org.salut-a-toi.merge_requests%3A0 (please use "SàT Pubsub" label)

Tickets and merge requests are handled by SàT itself using XMPP.


** CONTACT **

Goffi (Jérôme Poisson): goffi@goffi.org (e-mail) or goffi@jabber.fr (jid)
Souliane (Adrien Cossa): souliane@mailoo.org (e-mail) or souliane@libervia.org (jid)

XMPP MUC: sat@chat.jabberfr.org