C++ (Cpp) dbd_mysql_end_transaction Examples

Example #1

File: apr_dbd_mysql.c Project: cmjonze/apr

static int dbd_mysql_transaction(apr_pool_t *pool, apr_dbd_t *handle,
                                 apr_dbd_transaction_t **trans)
{
    /* Don't try recursive transactions here */
    if (handle->trans) {
        dbd_mysql_end_transaction(handle->trans) ;
    }
    if (!*trans) {
        *trans = apr_pcalloc(pool, sizeof(apr_dbd_transaction_t));
    }
    (*trans)->errnum = mysql_autocommit(handle->conn, 0);
    (*trans)->handle = handle;
    handle->trans = *trans;
    return (*trans)->errnum;
}

Example #2

File: apr_dbd_mysql.c Project: dago/opencsw

static int dbd_mysql_end_transaction(apr_dbd_transaction_t *trans)
{
    int ret = -1;
    if (trans) {
#if APU_MAJOR_VERSION >= 2 || (APU_MAJOR_VERSION == 1 && APU_MINOR_VERSION >= 3)
        /* rollback on error or explicit rollback request */
        if (trans->errnum || TXN_DO_ROLLBACK(trans)) {
#else
        if (trans->errnum) {
#endif
            trans->errnum = 0;
            ret = mysql_rollback(trans->handle->conn);
        }
        else {
            ret = mysql_commit(trans->handle->conn);
        }
    }
    ret |= mysql_autocommit(trans->handle->conn, 1);
    trans->handle->trans = NULL;
    return ret;
}
/* Whether or not transactions work depends on whether the
 * underlying DB supports them within MySQL.  Unfortunately
 * it fails silently with the default InnoDB.
 */

static int dbd_mysql_transaction(apr_pool_t *pool, apr_dbd_t *handle,
                                 apr_dbd_transaction_t **trans)
{
    /* Don't try recursive transactions here */
    if (handle->trans) {
        dbd_mysql_end_transaction(handle->trans) ;
    }
    if (!*trans) {
        *trans = apr_pcalloc(pool, sizeof(apr_dbd_transaction_t));
    }
    (*trans)->errnum = mysql_autocommit(handle->conn, 0);
    (*trans)->handle = handle;
    handle->trans = *trans;
    return (*trans)->errnum;
}

#if APU_MAJOR_VERSION >= 2 || (APU_MAJOR_VERSION == 1 && APU_MINOR_VERSION >= 3)
static int dbd_mysql_transaction_mode_get(apr_dbd_transaction_t *trans)
{
    if (!trans)
        return APR_DBD_TRANSACTION_COMMIT;

    return trans->mode;
}

static int dbd_mysql_transaction_mode_set(apr_dbd_transaction_t *trans,
                                          int mode)
{
    if (!trans)
        return APR_DBD_TRANSACTION_COMMIT;

    return trans->mode = (mode & TXN_MODE_BITS);
}
#endif

static apr_dbd_t *dbd_mysql_open(apr_pool_t *pool, const char *params)
{
    static const char *const delims = " \r\n\t;|,";
    const char *ptr;
    int i;
    const char *key;
    size_t klen;
    const char *value;
    size_t vlen;
#if MYSQL_VERSION_ID >= 50013
    my_bool do_reconnect = 1;
#endif
    MYSQL *real_conn;
    unsigned long flags = 0;
    
    struct {
        const char *field;
        const char *value;
    } fields[] = {
        {"host", NULL},
        {"user", NULL},
        {"pass", NULL},
        {"dbname", NULL},
        {"port", NULL},
        {"sock", NULL},
        {"flags", NULL},
        {"fldsz", NULL},
        {NULL, NULL}
    };
    unsigned int port = 0;
    apr_dbd_t *sql = apr_pcalloc(pool, sizeof(apr_dbd_t));
    sql->fldsz = FIELDSIZE;
    sql->conn = mysql_init(sql->conn);
    if ( sql->conn == NULL ) {
        return NULL;
    }
    for (ptr = strchr(params, '='); ptr; ptr = strchr(ptr, '=')) {
        for (key = ptr-1; isspace(*key); --key);
        klen = 0;
        while (isalpha(*key)) {
            /* don't parse backwards off the start of the string */
            if (key == params) {
                --key;
                ++klen;
                break;
            }
            --key;
            ++klen;
        }
        ++key;
        for (value = ptr+1; isspace(*value); ++value);
        vlen = strcspn(value, delims);
        for (i = 0; fields[i].field != NULL; i++) {
            if (!strncasecmp(fields[i].field, key, klen)) {
                fields[i].value = apr_pstrndup(pool, value, vlen);
                break;
            }
        }
        ptr = value+vlen;
    }
    if (fields[4].value != NULL) {
        port = atoi(fields[4].value);
    }
    if (fields[6].value != NULL &&
        !strcmp(fields[6].value, "CLIENT_FOUND_ROWS")) {
        flags |= CLIENT_FOUND_ROWS; /* only option we know */
    }
    if (fields[7].value != NULL) {
        sql->fldsz = atol(fields[7].value);
    }

#if MYSQL_VERSION_ID >= 50013
    /* the MySQL manual says this should be BEFORE mysql_real_connect */
    mysql_options(sql->conn, MYSQL_OPT_RECONNECT, &do_reconnect);
#endif
    
    real_conn = mysql_real_connect(sql->conn, fields[0].value,
                                   fields[1].value, fields[2].value,
                                   fields[3].value, port,
                                   fields[5].value, flags);

    if(real_conn == NULL) {
        mysql_close(sql->conn);
        return NULL;
    }

#if MYSQL_VERSION_ID >= 50013
    /* Some say this should be AFTER mysql_real_connect */
    mysql_options(sql->conn, MYSQL_OPT_RECONNECT, &do_reconnect);
#endif

    return sql;
}

static apr_status_t dbd_mysql_close(apr_dbd_t *handle)
{
    mysql_close(handle->conn);
    return APR_SUCCESS;
}