Mercurial > libervia-pubsub
view db/sat_pubsub_update_2_3.sql @ 422:c21f31355ab9
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 |
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-- we check version of the database before doing anything -- and stop execution if not good \set ON_ERROR_STOP DO $$ DECLARE ver text; BEGIN SELECT value INTO ver FROM metadata WHERE key='version'; IF NOT FOUND OR ver!='2' THEN RAISE EXCEPTION 'This update file needs to be applied on database schema version 2, you use version %',ver; END IF; END$$; \unset ON_ERROR_STOP -- end of version check /* we add "presence" access model */ ALTER TABLE nodes DROP CONSTRAINT nodes_access_model_check; ALTER TABLE nodes ADD CHECK (access_model IN ('open', 'presence', 'publisher-roster', 'whitelist', 'publish-only', 'self-publisher')); /* and schema column */ ALTER TABLE nodes ADD COLUMN schema xml; /* we want xml types for items data too */ ALTER TABLE items ALTER data TYPE xml using data::xml; UPDATE metadata SET value='3' WHERE key='version';