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/*!
\file db/driver/postgres/cursor.c
\brief DBMI - Low Level PostgreSQL database driver - cursor manipulation
This program is free software under the GNU General Public License
(>=v2). Read the file COPYING that comes with GRASS for details.
\author Radim Blazek
*/
#include <stdio.h>
#include <grass/gis.h>
#include <grass/dbmi.h>
#include <grass/glocale.h>
#include "globals.h"
#include "proto.h"
int db__driver_close_cursor(dbCursor *dbc)
{
cursor *c;
/* get my cursor via the dbc token */
c = (cursor *)db_find_token(db_get_cursor_token(dbc));
if (c == NULL)
return DB_FAILED;
/* free_cursor(cursor) */
free_cursor(c);
return DB_OK;
}
cursor *alloc_cursor(void)
{
cursor *c;
/* allocate the cursor */
c = (cursor *)db_malloc(sizeof(cursor));
if (c == NULL) {
db_d_append_error(_("Unable allocate cursor."));
return NULL;
}
c->res = NULL;
/* tokenize it */
c->token = db_new_token(c);
if (c->token < 0) {
db_d_append_error(_("Unable to add new token."));
return NULL;
}
c->cols = NULL;
c->ncols = 0;
return c;
}
void free_cursor(cursor *c)
{
db_drop_token(c->token);
/* TODO close results if any */
G_free(c->cols);
G_free(c);
}
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