106 lines
3.1 KiB
C
106 lines
3.1 KiB
C
/*
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This file is part of TALER
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Copyright (C) 2014, 2015, 2016 GNUnet e.V.
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TALER is free software; you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation; either version 3, or (at your option) any later version.
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TALER is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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TALER; see the file COPYING. If not, If not, see <http://www.gnu.org/licenses/>
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*/
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/**
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* @file include/taler_pq_lib.h
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* @brief helper functions for DB interactions
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* @author Sree Harsha Totakura <sreeharsha@totakura.in>
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* @author Florian Dold
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* @author Christian Grothoff
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*/
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#ifndef TALER_PQ_LIB_H_
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#define TALER_PQ_LIB_H_
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#include <libpq-fe.h>
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#include <jansson.h>
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#include <gnunet/gnunet_pq_lib.h>
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#include "taler_util.h"
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/**
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* Generate query parameter for a currency, consisting of the three
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* components "value", "fraction" and "currency" in this order. The
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* types must be a 64-bit integer, 32-bit integer and a
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* #TALER_CURRENCY_LEN-sized BLOB/VARCHAR respectively.
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*
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* @param x pointer to the query parameter to pass
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*/
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struct GNUNET_PQ_QueryParam
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TALER_PQ_query_param_amount_nbo (const struct TALER_AmountNBO *x);
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/**
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* Generate query parameter for a currency, consisting of the three
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* components "value", "fraction" and "currency" in this order. The
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* types must be a 64-bit integer, 32-bit integer and a
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* #TALER_CURRENCY_LEN-sized BLOB/VARCHAR respectively.
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*
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* @param x pointer to the query parameter to pass
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*/
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struct GNUNET_PQ_QueryParam
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TALER_PQ_query_param_amount (const struct TALER_Amount *x);
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/**
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* Generate query parameter for a JSON object (stored as a string
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* in the DB). Note that @a x must really be a JSON object or array,
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* passing just a value (string, integer) is not supported and will
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* result in an abort.
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*
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* @param x pointer to the json object to pass
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*/
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struct GNUNET_PQ_QueryParam
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TALER_PQ_query_param_json (const json_t *x);
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/**
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* Currency amount expected.
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*
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* @param name name of the field in the table
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* @param[out] amount where to store the result
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* @return array entry for the result specification to use
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*/
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struct GNUNET_PQ_ResultSpec
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TALER_PQ_result_spec_amount_nbo (const char *name,
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struct TALER_AmountNBO *amount);
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/**
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* Currency amount expected.
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*
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* @param name name of the field in the table
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* @param[out] amount where to store the result
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* @return array entry for the result specification to use
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*/
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struct GNUNET_PQ_ResultSpec
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TALER_PQ_result_spec_amount (const char *name,
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struct TALER_Amount *amount);
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/**
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* json_t expected.
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*
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* @param name name of the field in the table
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* @param[out] jp where to store the result
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* @return array entry for the result specification to use
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*/
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struct GNUNET_PQ_ResultSpec
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TALER_PQ_result_spec_json (const char *name,
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json_t **jp);
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#endif /* TALER_PQ_LIB_H_ */
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/* end of include/taler_pq_lib.h */
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