exchange

Base system with REST service to issue digital coins, run by the payment service provider
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get_denomination_pub_by_serial.c (1917B)

      1 /*
      2    This file is part of TALER
      3    Copyright (C) 2026 Taler Systems SA
      4 
      5    TALER is free software; you can redistribute it and/or modify it under the
      6    terms of the GNU General Public License as published by the Free Software
      7    Foundation; either version 3, or (at your option) any later version.
      8 
      9    TALER is distributed in the hope that it will be useful, but WITHOUT ANY
     10    WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
     11    A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
     12 
     13    You should have received a copy of the GNU General Public License along with
     14    TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
     15  */
     16 /**
     17  * @file exchangedb/get_denomination_pub_by_serial.c
     18  * @brief Implementation of the get_denomination_pub_by_serial function for Postgres
     19  * @author Özgür Kesim
     20  */
     21 #include "platform.h"
     22 #include "taler/taler_error_codes.h"
     23 #include "taler/taler_dbevents.h"
     24 #include "exchangedb_lib.h"
     25 #include "taler/taler_pq_lib.h"
     26 #include "exchange-database/get_denomination_pub_by_serial.h"
     27 #include "helper.h"
     28 
     29 
     30 enum GNUNET_DB_QueryStatus
     31 TALER_EXCHANGEDB_get_denomination_pub_by_serial (
     32   struct TALER_EXCHANGEDB_PostgresContext *pg,
     33   uint64_t denom_serial,
     34   struct TALER_DenominationPublicKey *denom_pub)
     35 {
     36   struct GNUNET_PQ_QueryParam params[] = {
     37     GNUNET_PQ_query_param_uint64 (&denom_serial),
     38     GNUNET_PQ_query_param_end
     39   };
     40   struct GNUNET_PQ_ResultSpec rs[] = {
     41     TALER_PQ_result_spec_denom_pub ("denom_pub",
     42                                     denom_pub),
     43     GNUNET_PQ_result_spec_end
     44   };
     45 
     46   PREPARE (pg,
     47            "get_denomination_pub_by_serial",
     48            "SELECT"
     49            " denom_pub"
     50            " FROM denominations"
     51            " WHERE denominations_serial=$1;");
     52   return GNUNET_PQ_eval_prepared_singleton_select (
     53     pg->conn,
     54     "get_denomination_pub_by_serial",
     55     params,
     56     rs);
     57 }