pg_select_unit.c (5096B)
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 backenddb/pg_select_unit.c 18 * @brief Implementation of the select_unit function for Postgres 19 * @author Bohdan Potuzhnyi 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 "pg_select_unit.h" 26 #include "pg_helper.h" 27 28 29 enum GNUNET_DB_QueryStatus 30 TMH_PG_select_unit (void *cls, 31 const char *instance_id, 32 const char *unit_id, 33 struct TALER_MERCHANTDB_UnitDetails *ud) 34 { 35 enum GNUNET_DB_QueryStatus qs; 36 struct PostgresClosure *pg = cls; 37 struct GNUNET_PQ_QueryParam params[] = { 38 GNUNET_PQ_query_param_string (instance_id), 39 GNUNET_PQ_query_param_string (unit_id), 40 GNUNET_PQ_query_param_end 41 }; 42 43 if (NULL == ud) 44 { 45 struct GNUNET_PQ_ResultSpec rs_null[] = { 46 GNUNET_PQ_result_spec_end 47 }; 48 49 check_connection (pg); 50 return GNUNET_PQ_eval_prepared_singleton_select ( 51 pg->conn, 52 "select_unit", 53 params, 54 rs_null); 55 } 56 else 57 { 58 struct GNUNET_PQ_ResultSpec rs[] = { 59 GNUNET_PQ_result_spec_uint64 ("unit_serial", 60 &ud->unit_serial), 61 GNUNET_PQ_result_spec_string ("unit", 62 &ud->unit), 63 GNUNET_PQ_result_spec_string ("unit_name_long", 64 &ud->unit_name_long), 65 GNUNET_PQ_result_spec_string ("unit_name_short", 66 &ud->unit_name_short), 67 TALER_PQ_result_spec_json ("unit_name_long_i18n", 68 &ud->unit_name_long_i18n), 69 TALER_PQ_result_spec_json ("unit_name_short_i18n", 70 &ud->unit_name_short_i18n), 71 GNUNET_PQ_result_spec_bool ("unit_allow_fraction", 72 &ud->unit_allow_fraction), 73 GNUNET_PQ_result_spec_uint32 ("unit_precision_level", 74 &ud->unit_precision_level), 75 GNUNET_PQ_result_spec_bool ("unit_active", 76 &ud->unit_active), 77 GNUNET_PQ_result_spec_bool ("unit_builtin", 78 &ud->unit_builtin), 79 GNUNET_PQ_result_spec_end 80 }; 81 82 check_connection (pg); 83 84 PREPARE (pg, 85 "select_unit_custom", 86 "SELECT" 87 " cu.unit_serial" 88 " ,cu.unit" 89 " ,cu.unit_name_long" 90 " ,cu.unit_name_short" 91 " ,cu.unit_name_long_i18n" 92 " ,cu.unit_name_short_i18n" 93 " ,cu.unit_allow_fraction" 94 " ,cu.unit_precision_level" 95 " ,cu.unit_active" 96 " ,FALSE AS unit_builtin" 97 " FROM merchant_custom_units cu" 98 " JOIN merchant_instances inst" 99 " USING (merchant_serial)" 100 " WHERE inst.merchant_id=$1" 101 " AND cu.unit=$2"); 102 qs = GNUNET_PQ_eval_prepared_singleton_select (pg->conn, 103 "select_unit_custom", 104 params, 105 rs); 106 if (GNUNET_DB_STATUS_SUCCESS_NO_RESULTS != qs) 107 return qs; 108 109 PREPARE (pg, 110 "select_unit_builtin", 111 "SELECT" 112 " bu.unit_serial" 113 " ,bu.unit" 114 " ,bu.unit_name_long" 115 " ,bu.unit_name_short" 116 " ,bu.unit_name_long_i18n" 117 " ,bu.unit_name_short_i18n" 118 " ,COALESCE(bo.override_allow_fraction, bu.unit_allow_fraction)" 119 " ,COALESCE(bo.override_precision_level, bu.unit_precision_level)" 120 " ,COALESCE(bo.override_active, bu.unit_active)" 121 " ,TRUE AS unit_builtin" 122 " FROM merchant_builtin_units bu" 123 " JOIN merchant_instances inst" 124 " ON TRUE" 125 " LEFT JOIN merchant_builtin_unit_overrides bo" 126 " ON bo.builtin_unit_serial = bu.unit_serial" 127 " AND bo.merchant_serial = inst.merchant_serial" 128 " WHERE inst.merchant_id=$1" 129 " AND bu.unit=$2"); 130 return GNUNET_PQ_eval_prepared_singleton_select (pg->conn, 131 "select_unit_builtin", 132 params, 133 rs); 134 } 135 }