SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    public String getStringValue() {        if (value == null) {            return null;        }        switch (type) {            case STRING:            case BOOLEAN:            case INTEGER:            case FLOAT:            case JAVAOBJECT:                return value.toString();            case DATE:                SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");                return format.format((Date) value);            case NODE:                return ((NodeHandle) value).getID();        }        return "";    }