1 files changed, 63 insertions, 0 deletions
diff --git a/src/exchangedb/pg_select_contract_by_purse.c b/src/exchangedb/pg_select_contract_by_purse.c
new file mode 100644
index 00000000..aeeb56d4
--- /dev/null
+++ b/src/exchangedb/pg_select_contract_by_purse.c
@@ -0,0 +1,63 @@
+/*
+   This file is part of TALER
+   Copyright (C) 2022 Taler Systems SA
+
+   TALER is free software; you can redistribute it and/or modify it under the
+   terms of the GNU General Public License as published by the Free Software
+   Foundation; either version 3, or (at your option) any later version.
+
+   TALER is distributed in the hope that it will be useful, but WITHOUT ANY
+   WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+   A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License along with
+   TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+ */
+/**
+ * @file exchangedb/pg_select_contract_by_purse.c
+ * @brief Implementation of the select_contract_by_purse function for Postgres
+ * @author Christian Grothoff
+ */
+#include "platform.h"
+#include "taler_error_codes.h"
+#include "taler_dbevents.h"
+#include "taler_pq_lib.h"
+#include "pg_select_contract_by_purse.h"
+#include "pg_helper.h"
+
+enum GNUNET_DB_QueryStatus
+TEH_PG_select_contract_by_purse (
+  void *cls,
+  const struct TALER_PurseContractPublicKeyP *purse_pub,
+  struct TALER_EncryptedContract *econtract)
+{
+  struct PostgresClosure *pg = cls;
+  struct GNUNET_PQ_QueryParam params[] = {
+    GNUNET_PQ_query_param_auto_from_type (purse_pub),
+    GNUNET_PQ_query_param_end
+  };
+  struct GNUNET_PQ_ResultSpec rs[] = {
+    GNUNET_PQ_result_spec_auto_from_type ("pub_ckey",
+                                          &econtract->contract_pub),
+    GNUNET_PQ_result_spec_auto_from_type ("contract_sig",
+                                          &econtract->econtract_sig),
+    GNUNET_PQ_result_spec_variable_size ("e_contract",
+                                         &econtract->econtract,
+                                         &econtract->econtract_size),
+    GNUNET_PQ_result_spec_end
+  };
+ /* Used in #postgres_select_contract_by_purse */
+  PREPARE (pg,
+           "select_contract_by_purse",
+           "SELECT "
+           " pub_ckey"
+           ",e_contract"
+           ",contract_sig"
+           " FROM contracts"
+           "   WHERE purse_pub=$1;");
+  return GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
+                                                   "select_contract_by_purse",
+                                                   params,
+                                                   rs);
+
+}