1 files changed, 39 insertions, 0 deletions
diff --git a/src/exchangedb/pg_count_known_coins.h b/src/exchangedb/pg_count_known_coins.h
new file mode 100644
index 000000000..69f07bdf4
--- /dev/null
+++ b/src/exchangedb/pg_count_known_coins.h
@@ -0,0 +1,39 @@
+/*
+   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_count_known_coins.h
+ * @brief implementation of the count_known_coins function for Postgres
+ * @author Christian Grothoff
+ */
+#ifndef PG_COUNT_KNOWN_COINS_H
+#define PG_COUNT_KNOWN_COINS_H
+
+#include "taler_util.h"
+#include "taler_json_lib.h"
+#include "taler_exchangedb_plugin.h"
+/**
+ * Count the number of known coins by denomination.
+ *
+ * @param cls database connection plugin state
+ * @param denom_pub_hash denomination to count by
+ * @return number of coins if non-negative, otherwise an `enum GNUNET_DB_QueryStatus`
+ */
+long long
+TEH_PG_count_known_coins (void *cls,
+                          const struct
+                          TALER_DenominationHashP *denom_pub_hash);
+
+#endif