static void request_log_transaction(request_rec * r, jk_server_conf_t * conf)
{
    request_log_format_item *items;
    char *str, *s;
    int i;
    int len = 0;
    const char **strs;
    int *strl;
    apr_array_header_t *format = conf->format;

    strs = apr_palloc(r->pool, sizeof(char *) * (format->nelts));
    strl = apr_palloc(r->pool, sizeof(int) * (format->nelts));
    items = (request_log_format_item *) format->elts;
    for (i = 0; i < format->nelts; ++i) {
        strs[i] = process_item(r, &items[i]);
    }
    for (i = 0; i < format->nelts; ++i) {
        len += strl[i] = strlen(strs[i]);
    }
    str = apr_palloc(r->pool, len + 1);
    for (i = 0, s = str; i < format->nelts; ++i) {
        memcpy(s, strs[i], strl[i]);
        s += strl[i];
    }
    *s = 0;

    jk_log(conf->log, JK_LOG_REQUEST, "%s", str);

}