view db/sat_pubsub_update_0_1.sql @ 403:1dc606612405

implemented experimental "consistent_publisher" option: /!\ pgsql schema needs to be updated /!\ New "consistent_publisher" option has been implemented to allow node owners + admins to modify an item while preserving the original publisher. This way, original publisher can still edit the item. In addition to `consistent_publisher`, `max_items` has been added to PGQSL schema to prepare for future implementation.
author Goffi <>
date Wed, 12 Jun 2019 21:51:50 +0200
parents 4d4575911060
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-- we check version of the database before doing anything
-- and stop execution if not good
DO $$
DECLARE ver text;
    SELECT value INTO ver FROM metadata WHERE key='version';
        RAISE EXCEPTION 'This update file needs to be applied on older database, you don''t have to use it';
    END IF;
-- end of version check

ALTER TABLE nodes ADD COLUMN pep text;

ALTER TABLE nodes DROP CONSTRAINT nodes_node_key;
/* we need 2 partial indexes to manage NULL value for PEP */
CREATE UNIQUE INDEX nodes_node_pep_key_not_null ON nodes(node, pep) WHERE pep IS NOT NULL;
CREATE UNIQUE INDEX nodes_node_pep_key_null ON nodes(node) WHERE pep IS NULL;

CREATE TABLE metadata (
	key text PRIMARY KEY,
	value text

INSERT INTO metadata VALUES ('version', '1');

CREATE TABLE item_categories (
    item_categories_id serial PRIMARY KEY,
    item_id integer NOT NULL references items ON DELETE CASCADE,
    category text NOT NULL,
    UNIQUE (item_id,category)

UPDATE nodes SET node='urn:xmpp:microblog:0', pep=substring(node from 20) WHERE node LIKE 'urn:xmpp:groupblog:_%';

/* This is to update namespaces, SàT was buggy before 0.6 and didn't set the atom namespace in <entry/> */
/* But yeah, this is a crazy query */
UPDATE items SET data = xmlelement(name item, xmlattributes((xpath('/item/@id', data::xml))[1] as id),
                        XMLPARSE(CONTENT NULLIF(array_to_string(xpath('/item/entry/preceding-sibling::*', data::xml)::text[],''),'')),
                        xmlelement(name entry, xmlattributes('' as xmlns), array_to_string(xpath('/item/entry/*', data::xml)::text[], '')::xml),
                        XMLPARSE(CONTENT NULLIF(array_to_string(xpath('/item/entry/following-sibling::*', data::xml)::text[],''),'')))
             FROM nodes WHERE nodes.node_id = items.node_id
             AND (node = 'urn:xmpp:microblog:0' or node LIKE 'urn:xmpp:comments:%')
             AND XMLEXISTS('/item/entry' PASSING (data::xml));