setStringProperty(ENCODING_PROPERTY, encoding);
if (encoding != null) setStringProperty(ENCODING_PROPERTY, encoding);
    public void setCharSet(String charSet) {        setStringProperty(LOCAL_ENCODING_PROPERTY, charSet);        String encoding = getStringProperty(LOCAL_ENCODING_PROPERTY);        if (encoding != null)            return;                encoding = FBConnectionHelper.getIscEncoding(charSet);        setStringProperty(ENCODING_PROPERTY, encoding);    }