private String uploadFile(UploadedFile doc) {
        UploadedFile myDoc = doc;
        String path = null;
        if (myDoc == null) {

        } else {
            InputStream inputStream = null;
            try {
                String dateAddition = new SimpleDateFormat("yyyy_MM_dd_HH_mm_ss").format(new java.util.Date());
                String ocLogos = BuildixxUtils.EXTERNAL_IMAGE_DIR + "operation_center_logos" + File.separator;
                String reportLogos = BuildixxUtils.EXTERNAL_IMAGE_DIR + "report_logos" + File.separator;
                if (this.ocLogo) {
                    path = ocLogos + dateAddition + "_" + myDoc.getFilename();
                } else {
                    DCIteratorBinding operationCenterIterator =
                        ADFUtils.findIterator("OperationCenterForUserAdminCenterView1Iterator");
                    Row currentOperationCenterRow = operationCenterIterator.getCurrentRow();
                    path = reportLogos + (String)currentOperationCenterRow.getAttribute("GSymbol");
                }
                System.out.println(path + " PATH + FILENAME ");
                FileOutputStream out = new FileOutputStream(path);
                inputStream = myDoc.getInputStream();
                byte[] buffer = new byte[8192];
                int bytesRead = 0;
                while ((bytesRead = inputStream.read(buffer, 0, 8192)) != -1) {
                    out.write(buffer, 0, bytesRead);
                }
                out.flush();
                out.close();
            } catch (Exception ex) {
                log.error(ex.getMessage(), ex);
            } finally {
                try {
                    inputStream.close();
                } catch (IOException ioex) {
                    log.error(ioex.getMessage(), ioex);
                }
            }
        }
        return path;
    }