ex_transaction.c

Shows how to use transactions. Not yet supported in WiredTiger.

/*-
 * Copyright (c) 2008-2012 WiredTiger, Inc.
 *
 * This is free and unencumbered software released into the public domain.
 *
 * Anyone is free to copy, modify, publish, use, compile, sell, or
 * distribute this software, either in source code form or as a compiled
 * binary, for any purpose, commercial or non-commercial, and by any
 * means.
 *
 * In jurisdictions that recognize copyright laws, the author or authors
 * of this software dedicate any and all copyright interest in the
 * software to the public domain. We make this dedication for the benefit
 * of the public at large and to the detriment of our heirs and
 * successors. We intend this dedication to be an overt act of
 * relinquishment in perpetuity of all present and future rights to this
 * software under copyright law.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 * ex_transaction.c
 *      This is an example demonstrating how to use transactions.
 */

#include <stdio.h>
#include <string.h>

#include <wiredtiger.h>

const char *home = "WT_TEST";

int main(void)
{
        int ret;
        WT_CONNECTION *conn;
        WT_SESSION *session;

        /* Open a connection to the database, creating it if necessary. */
        if ((ret =
            wiredtiger_open(home, NULL, "create,transactional", &conn)) != 0)
                fprintf(stderr, "Error connecting to %s: %s\n",
                    home, wiredtiger_strerror(ret));

        /* Open a session for the current thread's work. */
        if ((ret = conn->open_session(conn, NULL, NULL, &session)) != 0)
                fprintf(stderr, "Error opening a session on %s: %s\n",
                    home, wiredtiger_strerror(ret));

        session->begin_transaction(session, NULL);
        /* ... */
        session->commit_transaction(session, NULL);
        /* Note: closing the connection implicitly closes open session(s). */
        if ((ret = conn->close(conn, NULL)) != 0)
                fprintf(stderr, "Error connecting to %s: %s\n",
                    home, wiredtiger_strerror(ret));

        return (ret);
}