include/sql/exchange_do_get_link_data.sql

@@ -0,0 +1,59 @@
+--
+-- This file is part of TALER
+-- Copyright (C) 2014--2022 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_get_link_data(
+  IN in_coin_pub BYTEA
+)
+RETURNS SETOF record
+LANGUAGE plpgsql
+AS $$
+DECLARE
+  curs CURSOR
+  FOR
+  SELECT
+   melt_serial_id
+  FROM refresh_commitments
+  WHERE old_coin_pub=in_coin_pub;
+
+DECLARE
+  i RECORD;
+BEGIN
+OPEN curs;
+LOOP
+    FETCH NEXT FROM curs INTO i;
+    EXIT WHEN NOT FOUND;
+    RETURN QUERY
+      SELECT
+       tp.transfer_pub
+      ,denoms.denom_pub
+      ,rrc.ev_sig
+      ,rrc.ewv
+      ,rrc.link_sig
+      ,rrc.freshcoin_index
+      ,rrc.coin_ev
+      FROM refresh_revealed_coins rrc
+       JOIN refresh_transfer_keys tp
+         ON (tp.melt_serial_id=rrc.melt_serial_id)
+       JOIN denominations denoms
+         ON (rrc.denominations_serial=denoms.denominations_serial)
+       WHERE rrc.melt_serial_id =i.melt_serial_id
+/*       GROUP BY tp.transfer_pub, denoms.denom_pub, rrc.ev_sig,rrc.ewv,rrc.link_sig,rrc.freshcoin_index, rrc.coin_ev*/
+       ORDER BY tp.transfer_pub,
+       rrc.freshcoin_index ASC
+       ;
+END LOOP;
+CLOSE curs;
+END $$;