egdb3_11_7.container

Parameters

Name	Type	Mode
ac_usr	integer	IN

Definition

--
-- Delete old circulation bucket items for a specified user.
-- "Old" means older than the interval specified by a
-- user-level setting, if it is so specified.
--
DECLARE
    threshold TIMESTAMP WITH TIME ZONE;
BEGIN
	-- Sanity check
	IF ac_usr IS NULL THEN
		RETURN;
	END IF;
	-- Determine the threshold date that defines "old".  Subtract the
	-- interval from the system date, then truncate to midnight.
	SELECT
		date_trunc( 
			'day',
			now() - CAST( translate( value, '"', '' ) AS INTERVAL )
		)
	INTO
		threshold
	FROM
		actor.usr_setting
	WHERE
		usr = ac_usr
		AND name = 'patron.max_reading_list_interval';
	--
	IF threshold is null THEN
		-- No interval defined; don't delete anything
		-- RAISE NOTICE 'No interval defined for user %', ac_usr;
		return;
	END IF;
	--
	-- RAISE NOTICE 'Date threshold: %', threshold;
	--
	-- Threshold found; do the delete
	delete from container.copy_bucket_item
	where
		bucket in
		(
			select
				id
			from
				container.copy_bucket
			where
				owner = ac_usr
				and btype = 'circ_history'
		)
		and create_time < threshold;
	--
	RETURN;
END;

clear_expired_circ_history_items(ac_usr integer)

Description

Parameters

Definition