c_openupdate.c

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#include <grass/dbmi.h>
#include "macros.h"

int db_open_update_cursor(dbDriver * driver, dbString * table_name,
                          dbString * select, dbCursor * cursor, int mode)
{
    int ret_code;

    db_init_cursor(cursor);
    cursor->driver = driver;

    /* start the procedure call */
    db__set_protocol_fds(driver->send, driver->recv);
    DB_START_PROCEDURE_CALL(DB_PROC_OPEN_UPDATE_CURSOR);

    /* send the argument(s) to the procedure */
    DB_SEND_STRING(table_name);
    DB_SEND_STRING(select);
    DB_SEND_INT(mode);

    /* get the return code for the procedure call */
    DB_RECV_RETURN_CODE(&ret_code);

    if (ret_code != DB_OK)
        return ret_code;        /* ret_code SHOULD == DB_FAILED */

    /* get the results */
    DB_RECV_TOKEN(&cursor->token);
    DB_RECV_INT(&cursor->type);
    DB_RECV_INT(&cursor->mode);
    DB_RECV_TABLE_DEFINITION(&cursor->table);
    db_alloc_cursor_column_flags(cursor);
    return DB_OK;
}