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annotate db/sat_pubsub_update_0_1.sql @ 414:ccb2a22ea0fc

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Python 3 port: /!\ Python 3.6+ is now needed to use SàT Pubsub /!\ instability may occur and features may not be working anymore, this will improve with time The same procedure as in backend has been applied (check backend commit ab2696e34d29 logs for details). Python minimal version has been updated in setup.py
author Goffi <goffi@goffi.org>
date Fri, 16 Aug 2019 12:53:33 +0200
parents 1dc606612405
children
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1 -- we check version of the database before doing anything
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2 -- and stop execution if not good
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3 \set ON_ERROR_STOP
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4 DO $$
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5 DECLARE ver text;
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6 BEGIN
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7 SELECT value INTO ver FROM metadata WHERE key='version';
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8 IF FOUND THEN
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9 RAISE EXCEPTION 'This update file needs to be applied on older database, you don''t have to use it';
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10 END IF;
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11 END$$;
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12 \unset ON_ERROR_STOP
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13 -- end of version check
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15
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16 ALTER TABLE nodes ADD COLUMN pep text;
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17
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18 ALTER TABLE nodes DROP CONSTRAINT nodes_node_key;
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19 /* we need 2 partial indexes to manage NULL value for PEP */
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20 CREATE UNIQUE INDEX nodes_node_pep_key_not_null ON nodes(node, pep) WHERE pep IS NOT NULL;
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21 CREATE UNIQUE INDEX nodes_node_pep_key_null ON nodes(node) WHERE pep IS NULL;
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22
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23 CREATE TABLE metadata (
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24 key text PRIMARY KEY,
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25 value text
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26 );
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27
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28 INSERT INTO metadata VALUES ('version', '1');
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29
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30 CREATE TABLE item_categories (
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31 item_categories_id serial PRIMARY KEY,
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32 item_id integer NOT NULL references items ON DELETE CASCADE,
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33 category text NOT NULL,
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34 UNIQUE (item_id,category)
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35 );
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36
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37 UPDATE nodes SET node='urn:xmpp:microblog:0', pep=substring(node from 20) WHERE node LIKE 'urn:xmpp:groupblog:_%';
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38
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39 /* This is to update namespaces, SàT was buggy before 0.6 and didn't set the atom namespace in <entry/> */
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40 /* But yeah, this is a crazy query */
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41 UPDATE items SET data = xmlelement(name item, xmlattributes((xpath('/item/@id', data::xml))[1] as id),
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42 XMLPARSE(CONTENT NULLIF(array_to_string(xpath('/item/entry/preceding-sibling::*', data::xml)::text[],''),'')),
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43 xmlelement(name entry, xmlattributes('http://www.w3.org/2005/Atom' as xmlns), array_to_string(xpath('/item/entry/*', data::xml)::text[], '')::xml),
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44 XMLPARSE(CONTENT NULLIF(array_to_string(xpath('/item/entry/following-sibling::*', data::xml)::text[],''),'')))
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45 FROM nodes WHERE nodes.node_id = items.node_id
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46 AND (node = 'urn:xmpp:microblog:0' or node LIKE 'urn:xmpp:comments:%')
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47 AND XMLEXISTS('/item/entry' PASSING (data::xml));