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
|
/*!
* \file db/dbmi_client/c_rows.c
*
* \brief DBMI Library (client) - get number of records
*
* (C) 1999-2008 by the GRASS Development Team
*
* This program is free software under the GNU General Public
* License (>=v2). Read the file COPYING that comes with GRASS
* for details.
*
* \author Joel Jones (CERL/UIUC), Radim Blazek
*/
#include <grass/dbmi.h>
#include "macros.h"
/*!
\brief Get number of selected rows
\param cursor db select cursor
\return DB_OK on success
\return DB_FAILED on failure
*/
int db_get_num_rows(dbCursor *cursor)
{
int nrows, ret_code;
/* start the procedure call */
db__set_protocol_fds(cursor->driver->send, cursor->driver->recv);
DB_START_PROCEDURE_CALL(DB_PROC_ROWS);
/* send the argument(s) to the procedure */
DB_SEND_TOKEN(&cursor->token);
/* get the return code for the procedure call */
DB_RECV_RETURN_CODE(&ret_code);
if (ret_code != DB_OK)
return -1;
/* get the results */
DB_RECV_INT(&nrows);
return nrows;
}
|
