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annotate db/sat_pubsub_update_4_5.sql @ 422:c21f31355ab9

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configuration: "max_items" option: "max_items" is implemented using a text-single field, as it is done in the XEP-0060 example (there is no real formal description). When changing the node configuration, the max_items can't be set to a number lower than the total number of items in the node (the configuration will then be rejected), this is to avoid accidental deletion of items.
author Goffi <goffi@goffi.org>
date Tue, 10 Mar 2020 11:11:38 +0100
parents 1dc606612405
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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403
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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 $$
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5 DECLARE ver text;
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6 BEGIN
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7 SELECT value INTO ver FROM metadata WHERE key='version';
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8 IF NOT FOUND OR ver!='4' THEN
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9 RAISE EXCEPTION 'This update file needs to be applied on database schema version 4, you use version %',ver;
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10 END IF;
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11 END$$;
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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 /* new "max_items" and "consistent publisher" options */
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16 ALTER TABLE nodes ADD COLUMN max_items integer NOT NULL DEFAULT 0
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17 CHECK (max_items >= 0);
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18 ALTER TABLE nodes ADD COLUMN consistent_publisher boolean NOT NULL DEFAULT FALSE;
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19
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20 UPDATE metadata SET value='5' WHERE key='version';