public void setBarCodeLastExportDate(Integer levelPointId, String lastExportDate) {
barCodeLastExportDates.put(levelPointId, lastExportDate);
setValue(BARCODE_LAST_EXPORT_DATES, barCodeLastExportDates.saveToString());
}
private void loadBarCodeLastExportDates() {
String value = preferences.getString(BARCODE_LAST_EXPORT_DATES, null);
if (value != null) barCodeLastExportDates.loadFromString(value);
}
public String getBarCodeLastExportDate(Integer levelPointId) {
String result = barCodeLastExportDates.get(levelPointId);
return result == null ? "" : result;
}