RPC Service - Serialization to/from attachment for parameter.

[rakesh bhakta]

I am using the RPC style services; I have java classes with methods that 
contains
either parameters or return type of InputStream and File.  Like below:
 public interface XSLTProcessorService
 {
   public InputStream transform(InputStream xmlDoc);
   public File              getXSLTSrc();
 }

I need the return value to be return as attachments, and the input parameter 
to
be supplied from an attachments.

I realized using DataHandler is a solution; however, I don't have control of 
the
interface and would like to seek an dynamic  solution where I can serialize 
any
inputstream & file to/from SOAP attachments.

Any thought on the best way to achieve this ?