GRASS Programmer's Manual 6.4.1(2011)
d_rows.c
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00001 
00015 #include <grass/dbmi.h>
00016 #include "macros.h"
00017 #include "dbstubs.h"
00018 
00025 int db_d_get_num_rows(void)
00026 {
00027     dbToken token;
00028     dbCursor *cursor;
00029     int nrows;
00030 
00031     /* get the arg(s) */
00032     DB_RECV_TOKEN(&token);
00033     cursor = (dbCursor *) db_find_token(token);
00034 
00035     /* call the procedure */
00036     nrows = db_driver_get_num_rows(cursor);
00037 
00038     /* send the return code */
00039     if (nrows < 0) {
00040         DB_SEND_FAILURE();
00041         return DB_OK;
00042     }
00043     DB_SEND_SUCCESS();
00044 
00045     /* results */
00046     DB_SEND_INT(nrows);
00047     return DB_OK;
00048 }
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