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annotate db/sat_pubsub_update_0_1.sql @ 301:05c875a13a62

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categories are now stored in a dedicated table if item contain an atom entry: - database creation/update files include the new table - item data are now stored in a ItemData namedtuple
author Goffi <goffi@goffi.org>
date Wed, 25 Nov 2015 18:33:38 +0100
parents df1edebb0466
children 3c2705199108
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 ALTER TABLE nodes ADD COLUMN pep text;
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2
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3 ALTER TABLE nodes DROP CONSTRAINT nodes_node_key;
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4 /* we need 2 partial indexes to manage NULL value for PEP */
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5 CREATE UNIQUE INDEX nodes_node_pep_key_not_null ON nodes(node, pep) WHERE pep IS NOT NULL;
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6 CREATE UNIQUE INDEX nodes_node_pep_key_null ON nodes(node) WHERE pep IS NULL;
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7
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8 CREATE TABLE metadata (
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9 key text PRIMARY KEY,
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10 value text
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11 );
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12
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13 INSERT INTO metadata VALUES ('version', '1');
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14
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15 CREATE TABLE item_categories (
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16 item_categories_id serial PRIMARY KEY,
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17 item_id integer NOT NULL references items ON DELETE CASCADE,
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18 category text NOT NULL,
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19 UNIQUE (item_id,category)
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20 );
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21
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22 UPDATE nodes SET node='urn:xmpp:microblog:0', pep=substring(node from 20) WHERE node LIKE 'urn:xmpp:groupblog:_%';
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23
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24 /* This is to update namespaces, SàT was bugguy before 0.6 and didn't set the atom namespace in <entry/> */
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25 /* But yeah, this is a crazy query */
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26 UPDATE items SET data = xmlelement(name item, xmlattributes((xpath('/item/@id', data::xml))[1] as id),
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27 XMLPARSE(CONTENT NULLIF(array_to_string(xpath('/item/entry/preceding-sibling::*', data::xml)::text[],''),'')),
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28 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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29 XMLPARSE(CONTENT NULLIF(array_to_string(xpath('/item/entry/following-sibling::*', data::xml)::text[],''),'')))
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30 FROM nodes WHERE nodes.node_id = items.node_id
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31 AND node = 'urn:xmpp:microblog:0'
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32 AND XMLEXISTS('/item/entry' PASSING (data::xml));