Line data    Source code

       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/get_category.c
      18              :  * @brief Implementation of the get_category function for Postgres
      19              :  * @author Christian Grothoff
      20              :  */
      21              : #include "platform.h"
      22              : #include <taler/taler_pq_lib.h>
      23              : #include "merchant-database/get_category.h"
      24              : #include "helper.h"
      25              : 
      26              : 
      27              : enum GNUNET_DB_QueryStatus
      28            0 : TALER_MERCHANTDB_get_category (
      29              :   struct TALER_MERCHANTDB_PostgresContext *pg,
      30              :   const char *instance_id,
      31              :   uint64_t category_id,
      32              :   struct TALER_MERCHANTDB_CategoryDetails *cd,
      33              :   size_t *num_products,
      34              :   char **products)
      35              : {
      36            0 :   struct GNUNET_PQ_QueryParam params[] = {
      37            0 :     GNUNET_PQ_query_param_uint64 (&category_id),
      38              :     GNUNET_PQ_query_param_end
      39              :   };
      40            0 :   struct GNUNET_PQ_ResultSpec rs[] = {
      41            0 :     GNUNET_PQ_result_spec_string ("category_name",
      42              :                                   &cd->category_name),
      43            0 :     TALER_PQ_result_spec_json ("category_name_i18n",
      44              :                                &cd->category_name_i18n),
      45            0 :     GNUNET_PQ_result_spec_array_string (pg->conn,
      46              :                                         "products",
      47              :                                         num_products,
      48              :                                         products),
      49              :     GNUNET_PQ_result_spec_end
      50              :   };
      51              : 
      52            0 :   GNUNET_assert (NULL != pg->current_merchant_id);
      53            0 :   GNUNET_assert (0 == strcmp (instance_id,
      54              :                               pg->current_merchant_id));
      55            0 :   TMH_PQ_prepare_anon (pg,
      56              :                        "SELECT"
      57              :                        " category_name"
      58              :                        ",category_name_i18n::TEXT"
      59              :                        ",t.product_array AS products"
      60              :                        " FROM merchant_categories mc"
      61              :                        ",LATERAL ("
      62              :                        "   SELECT ARRAY ("
      63              :                        "     SELECT "
      64              :                        "         mi.product_id AS product_id"
      65              :                        "       FROM merchant_product_categories mpc"
      66              :                        "       JOIN merchant_inventory mi"
      67              :                        "          USING (product_serial)"
      68              :                        "      WHERE mpc.category_serial = mc.category_serial"
      69              :                        "   ) AS product_array"
      70              :                        " ) t"
      71              :                        " WHERE mc.category_serial=$1");
      72            0 :   return GNUNET_PQ_eval_prepared_singleton_select (
      73              :     pg->conn,
      74              :     "",
      75              :     params,
      76              :     rs);
      77              : }