Can we change the encoding used in Drools by default encoding to support config

Can we change the encoding used in Drools by default encoding to be configured?
bacause i want to use chinese charset in rule content, according to the current Mechanism of drools, i need to change system default encoding to UTF-8 or other supporting the Chinese character set, it will make impact to whole system, So we hope Drools can support set encoding.
like follow method:

public Reader getReader() throws IOException {
        return new InputStreamReader( getInputStream());
        //here can we support config encoding
        //return new InputStreamReader( getInputStream(), "UTF-8" );
    }