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--
-- This file is part of TALER
-- Copyright (C) 2023 Taler Systems SA
--
-- TALER is free software; you can redistribute it and/or modify it under the
-- terms of the GNU General Public License as published by the Free Software
-- Foundation; either version 3, or (at your option) any later version.
--
-- TALER is distributed in the hope that it will be useful, but WITHOUT ANY
-- WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
-- A PARTICULAR PURPOSE. See the GNU General Public License for more details.
--
-- You should have received a copy of the GNU General Public License along with
-- TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
--
CREATE OR REPLACE FUNCTION exchange_do_insert_aml_officer(
IN in_decider_pub BYTEA,
IN in_master_sig BYTEA,
IN in_decider_name VARCHAR,
IN in_is_active BOOLEAN,
IN in_read_only BOOLEAN,
IN in_last_change INT8,
OUT out_last_change INT8)
LANGUAGE plpgsql
AS $$
BEGIN
INSERT INTO exchange.aml_staff
(decider_pub
,master_sig
,decider_name
,is_active
,read_only
,last_change
) VALUES
(in_decider_pub
,in_master_sig
,in_decider_name
,in_is_active
,in_read_only
,in_last_change)
ON CONFLICT DO NOTHING;
IF FOUND
THEN
out_last_change=0;
RETURN;
END IF;
-- Check update is most recent...
SELECT last_change
INTO out_last_change
FROM exchange.aml_staff
WHERE decider_pub=in_decider_pub;
ASSERT FOUND, 'cannot have INSERT conflict but no AML staff record';
IF out_last_change >= in_last_change
THEN
-- Refuse to insert older status
RETURN;
END IF;
-- We are more recent, update existing record.
UPDATE exchange.aml_staff
SET master_sig=in_master_sig
,decider_name=in_decider_name
,is_active=in_is_active
,read_only=in_read_only
,last_change=in_last_change
WHERE decider_pub=in_decider_pub;
END $$;
COMMENT ON FUNCTION exchange_do_insert_aml_officer(BYTEA, BYTEA, VARCHAR, BOOL, BOOL, INT8)
IS 'Inserts or updates AML staff record, making sure the update is more recent than the previous change';
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