merchant

Merchant backend to process payments, run by merchants
Log | Files | Refs | Submodules | README | LICENSE

select_category_by_name.c (2382B)

      1 /*
      2    This file is part of TALER
      3    Copyright (C) 2024 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/backenddb/select_category_by_name.c
     18  * @brief Implementation of the select_category_by_name function for Postgres
     19  * @author Christian Grothoff
     20  */
     21 #include "platform.h"
     22 #include <taler/taler_error_codes.h>
     23 #include <taler/taler_dbevents.h>
     24 #include <taler/taler_pq_lib.h>
     25 #include "merchant-database/select_category_by_name.h"
     26 #include "helper.h"
     27 
     28 
     29 enum GNUNET_DB_QueryStatus
     30 TALER_MERCHANTDB_select_category_by_name (struct TALER_MERCHANTDB_PostgresContext *pg,
     31                                           const char *instance_id,
     32                                           const char *category_name,
     33                                           json_t **name_i18n,
     34                                           uint64_t *category_id)
     35 {
     36   struct GNUNET_PQ_QueryParam params[] = {
     37     GNUNET_PQ_query_param_string (instance_id),
     38     GNUNET_PQ_query_param_string (category_name),
     39     GNUNET_PQ_query_param_end
     40   };
     41   struct GNUNET_PQ_ResultSpec rs[] = {
     42     GNUNET_PQ_result_spec_uint64 ("category_serial",
     43                                   category_id),
     44     TALER_PQ_result_spec_json ("category_name_i18n",
     45                                name_i18n),
     46     GNUNET_PQ_result_spec_end
     47   };
     48 
     49   check_connection (pg);
     50   PREPARE (pg,
     51            "select_category_by_name",
     52            "SELECT"
     53            " category_serial"
     54            ",category_name_i18n::TEXT"
     55            " FROM merchant_categories mc"
     56            " JOIN merchant_instances mi"
     57            "   USING (merchant_serial)"
     58            " WHERE mi.merchant_id=$1"
     59            "   AND mc.category_name=$2");
     60   return GNUNET_PQ_eval_prepared_singleton_select (
     61     pg->conn,
     62     "select_category_by_name",
     63     params,
     64     rs);
     65 }