donau

Donation authority for GNU Taler (experimental)
Log | Files | Refs | Submodules | README | LICENSE

lookup_donation_unit_amount.c (1973B)

      1 /*
      2    This file is part of TALER
      3    Copyright (C) 2025 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 src/donaudb/lookup_donation_unit_amount.c
     18  * @brief Implementation of getting the donation unit amount
     19  * @author Bohdan Potuzhnyi
     20  */
     21 #include <donau_config.h>
     22 #include <taler/taler_error_codes.h>
     23 #include <taler/taler_dbevents.h>
     24 #include <taler/taler_pq_lib.h>
     25 #include "helper.h"
     26 #include "donau_pq_lib.h"
     27 #include "lookup_donation_unit_amount.h"
     28 
     29 
     30 enum GNUNET_DB_QueryStatus
     31 DONAUDB_lookup_donation_unit_amount (
     32   struct DONAUDB_PostgresContext *ctx,
     33   const struct DONAU_DonationUnitHashP *h_donation_unit_pub,
     34   struct TALER_Amount *value)
     35 {
     36   struct GNUNET_PQ_QueryParam params[] = {
     37     GNUNET_PQ_query_param_auto_from_type (h_donation_unit_pub),
     38     GNUNET_PQ_query_param_end
     39   };
     40 
     41   struct GNUNET_PQ_ResultSpec rs[] = {
     42     TALER_PQ_RESULT_SPEC_AMOUNT ("value",
     43                                  value),
     44     GNUNET_PQ_result_spec_end
     45   };
     46 
     47   PREPARE (ctx,
     48            "lookup_donation_unit",
     49            "SELECT value"
     50            " FROM donation_units"
     51            " WHERE h_donation_unit_pub=$1;");
     52   return GNUNET_PQ_eval_prepared_singleton_select (ctx->conn,
     53                                                    "lookup_donation_unit",
     54                                                    params,
     55                                                    rs);
     56 }