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annotate db/libervia_pubsub_update_0_1.sql @ 468:445a2f67be4a

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doc: update following renaming and delegation changes
author Goffi <goffi@goffi.org>
date Fri, 15 Oct 2021 15:54:15 +0200
parents 9af0ef2c145c
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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14
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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));