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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 FUNCTION create_table_reserve_history (
IN partition_suffix TEXT DEFAULT NULL
)
RETURNS VOID
LANGUAGE plpgsql
AS $$
DECLARE
table_name TEXT DEFAULT 'reserve_history';
BEGIN
PERFORM create_partitioned_table(
'CREATE TABLE %I'
'(reserve_history_serial_id INT8 GENERATED BY DEFAULT AS IDENTITY'
',reserve_pub BYTEA NOT NULL CHECK (LENGTH(reserve_pub)=32)'
',table_name TEXT NOT NULL'
',serial_id INT8 NOT NULL'
') %s ;'
,table_name
,'PARTITION BY HASH (reserve_pub)'
,partition_suffix
);
PERFORM comment_partitioned_table(
'Links to tables with entries that affected the transaction history of a reserve.'
,table_name
,partition_suffix
);
PERFORM comment_partitioned_column(
'For which reserve is this a history entry'
,'reserve_pub'
,table_name
,partition_suffix
);
PERFORM comment_partitioned_column(
'In which table is the history entry'
,'table_name'
,table_name
,partition_suffix
);
PERFORM comment_partitioned_column(
'Which is the generated serial ID of the entry in the table'
,'serial_id'
,table_name
,partition_suffix
);
PERFORM comment_partitioned_column(
'Monotonic counter, used to generate Etags for caching'
,'reserve_history_serial_id'
,table_name
,partition_suffix
);
END
$$;
CREATE FUNCTION constrain_table_reserve_history(
IN partition_suffix TEXT
)
RETURNS void
LANGUAGE plpgsql
AS $$
DECLARE
table_name TEXT DEFAULT 'reserve_history';
BEGIN
table_name = concat_ws('_', table_name, partition_suffix);
EXECUTE FORMAT (
'ALTER TABLE ' || table_name ||
' ADD CONSTRAINT ' || table_name || '_reserve_history_serial_id_pkey'
' PRIMARY KEY (reserve_history_serial_id) '
',ADD CONSTRAINT ' || table_name || '_reserve_entry_key'
' UNIQUE (reserve_pub, table_name, serial_id)'
);
EXECUTE FORMAT (
'CREATE INDEX ' || table_name || '_reserve_by_time'
' ON ' || table_name || ' '
'(reserve_pub'
',reserve_history_serial_id DESC'
');'
);
END
$$;
CREATE FUNCTION foreign_table_reserve_history()
RETURNS void
LANGUAGE plpgsql
AS $$
DECLARE
table_name TEXT DEFAULT 'reserve_history';
BEGIN
EXECUTE FORMAT (
'ALTER TABLE ' || table_name ||
' ADD CONSTRAINT ' || table_name || '_foreign_reserve_pub'
' FOREIGN KEY (reserve_pub) '
' REFERENCES reserves (reserve_pub) ON DELETE CASCADE'
);
END
$$;
INSERT INTO exchange_tables
(name
,version
,action
,partitioned
,by_range)
VALUES
('reserve_history'
,'exchange-0002'
,'create'
,TRUE
,FALSE),
('reserve_history'
,'exchange-0002'
,'constrain'
,TRUE
,FALSE),
('reserve_history'
,'exchange-0002'
,'foreign'
,TRUE
,FALSE)
;
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