1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
|
/*
This file is part of GNUnet
Copyright (C) 2017 GNUnet e.V.
GNUnet 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.
GNUnet 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
GNUnet; see the file COPYING. If not, If not, see <http://www.gnu.org/licenses/>
*/
/**
* @file pq/pq_prepare.c
* @brief functions to connect to libpq (PostGres)
* @author Christian Grothoff
*/
#include "platform.h"
#include "gnunet_util_lib.h"
#include "gnunet_pq_lib.h"
/**
* Create a `struct GNUNET_PQ_PreparedStatement`.
*
* @param name name of the statement
* @param sql actual SQL statement
* @param num_args number of arguments in the statement
* @return initialized struct
*/
struct GNUNET_PQ_PreparedStatement
GNUNET_PQ_make_prepare (const char *name,
const char *sql,
unsigned int num_args)
{
struct GNUNET_PQ_PreparedStatement ps = {
.name = name,
.sql = sql,
.num_arguments = num_args
};
return ps;
}
/**
* Request creation of prepared statements @a ps from Postgres.
*
* @param connection connection to prepare the statements for
* @param ps #GNUNET_PQ_PREPARED_STATEMENT_END-terminated array of prepared
* statements.
* @return #GNUNET_OK on success,
* #GNUNET_SYSERR on error
*/
int
GNUNET_PQ_prepare_statements (PGconn *connection,
const struct GNUNET_PQ_PreparedStatement *ps)
{
for (unsigned int i=0;NULL != ps[i].name;i++)
{
PGresult *ret;
GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG,
"pq",
"Preparing SQL statement `%s' as `%s'\n",
ps[i].sql,
ps[i].name);
ret = PQprepare (connection,
ps[i].name,
ps[i].sql,
ps[i].num_arguments,
NULL);
if (PGRES_COMMAND_OK != PQresultStatus (ret))
{
GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
"pq",
_("PQprepare (`%s' as `%s') failed with error: %s\n"),
ps[i].sql,
ps[i].name,
PQerrorMessage (connection));
PQclear (ret);
return GNUNET_SYSERR;
}
PQclear (ret);
}
return GNUNET_OK;
}
/* end of pq/pq_prepare.c */
|
