return new String(Base64.decodeBase64((byte[])obj));
try { return obj == null ? null : new String(Base64.decodeBase64((byte[])obj)); } catch (Exception ex) { throw new ConversionException(ex); }
    public String convertToString(Object obj, int sqlTypeCode) throws ConversionException    {        return new String(Base64.decodeBase64((byte[])obj));    }