check_transfer_exists.c (1964B)
1 /* 2 This file is part of TALER 3 Copyright (C) 2023 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/check_transfer_exists.c 18 * @brief Implementation of the check_transfer_exists function for Postgres 19 * @author Iván Ávalos 20 */ 21 #include "platform.h" 22 #include <taler/taler_pq_lib.h> 23 #include "merchant-database/check_transfer_exists.h" 24 #include "helper.h" 25 26 27 enum GNUNET_DB_QueryStatus 28 TALER_MERCHANTDB_check_transfer_exists ( 29 struct TALER_MERCHANTDB_PostgresContext *pg, 30 const char *instance_id, 31 uint64_t transfer_serial_id) 32 { 33 struct GNUNET_PQ_QueryParam params[] = { 34 GNUNET_PQ_query_param_uint64 (&transfer_serial_id), 35 GNUNET_PQ_query_param_end 36 }; 37 struct GNUNET_PQ_ResultSpec rs[] = { 38 GNUNET_PQ_result_spec_end 39 }; 40 41 GNUNET_assert (NULL != pg->current_merchant_id); 42 GNUNET_assert (0 == strcmp (instance_id, 43 pg->current_merchant_id)); 44 check_connection (pg); 45 TMH_PQ_prepare_anon (pg, 46 "SELECT" 47 " 1" 48 " FROM merchant_transfers" 49 " WHERE credit_serial=$1"); 50 return GNUNET_PQ_eval_prepared_singleton_select (pg->conn, 51 "", 52 params, 53 rs); 54 }