From 6991ca011b4f97d24066f82ccd09adde8a692f6a Mon Sep 17 00:00:00 2001
From: Joseph <Joseph.xu@efrei.net>
Date: Mon, 14 Nov 2022 07:35:56 -0500
Subject: remove more functions

---
 src/exchangedb/pg_get_old_coin_by_h_blind.c | 65 +++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 src/exchangedb/pg_get_old_coin_by_h_blind.c

(limited to 'src/exchangedb/pg_get_old_coin_by_h_blind.c')

diff --git a/src/exchangedb/pg_get_old_coin_by_h_blind.c b/src/exchangedb/pg_get_old_coin_by_h_blind.c
new file mode 100644
index 000000000..385c3f1d1
--- /dev/null
+++ b/src/exchangedb/pg_get_old_coin_by_h_blind.c
@@ -0,0 +1,65 @@
+/*
+   This file is part of TALER
+   Copyright (C) 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/>
+ */
+/**
+ * @file exchangedb/pg_get_old_coin_by_h_blind.c
+ * @brief Implementation of the get_old_coin_by_h_blind function for Postgres
+ * @author Christian Grothoff
+ */
+#include "platform.h"
+#include "taler_error_codes.h"
+#include "taler_dbevents.h"
+#include "taler_pq_lib.h"
+#include "pg_get_old_coin_by_h_blind.h"
+#include "pg_helper.h"
+
+
+
+enum GNUNET_DB_QueryStatus
+TEH_PG_get_old_coin_by_h_blind (
+  void *cls,
+  const struct TALER_BlindedCoinHashP *h_blind_ev,
+  struct TALER_CoinSpendPublicKeyP *old_coin_pub,
+  uint64_t *rrc_serial)
+{
+  struct PostgresClosure *pg = cls;
+  struct GNUNET_PQ_QueryParam params[] = {
+    GNUNET_PQ_query_param_auto_from_type (h_blind_ev),
+    GNUNET_PQ_query_param_end
+  };
+  struct GNUNET_PQ_ResultSpec rs[] = {
+    GNUNET_PQ_result_spec_auto_from_type ("old_coin_pub",
+                                          old_coin_pub),
+    GNUNET_PQ_result_spec_uint64 ("rrc_serial",
+                                  rrc_serial),
+    GNUNET_PQ_result_spec_end
+  };
+
+      /* Used in #postgres_get_old_coin_by_h_blind() */
+  PREPARE (pg,
+           "old_coin_by_h_blind",
+           "SELECT"
+           " okc.coin_pub AS old_coin_pub"
+           ",rrc_serial"
+           " FROM refresh_revealed_coins rrc"
+           " JOIN refresh_commitments rcom USING (melt_serial_id)"
+           " JOIN known_coins okc ON (rcom.old_coin_pub = okc.coin_pub)"
+           " WHERE h_coin_ev=$1"
+           " LIMIT 1;");
+  return GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
+                                                   "old_coin_by_h_blind",
+                                                   params,
+                                                   rs);
+}
-- 
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