Re: SOAP Attachment from RPC Service Question

[Martin Cavanagh]

My quick answer is:
Soap 2.3.1 is rather old - never the less I am still using it.
I personally have speed issues under java 1.5 - so i would suggest 
starting with Java 1.4 - if you do use Java 1.5 I'd love to hear your 
experiences - I'd love to move to java 1.5.....

Under either SOAP 2.3.1 or 2.3.0 there was an option zip - 
SOAPContext.setGzip(boolean)

I know thats probably not much help - but maybe....

Please let me know how that works out for you?

Martin

Jingjiu Wang wrote:

Hi All,

I am using Apache SOAP 2_3_1 on Tomcat 4.1.27.

I have a RPC service at http://hostip:port/soap/servlet/rpcrouter that
sends back a response upon receiving a request.  I build a very large
XML (100Mb or more) in the response and the performance was bad, so I
thought I will use SOAP with Attachment and just put the XML file into
the attachment.  I have some questions on how to accomplish this:

1) In the SOAP Service code, what should I return?

Suppose the following is my code for the SOAP Service:

public class MySoapService {
   public DataHandler MyServiceMethod(Element request) {
                DataHandler dh = null;

                try {
                        //use the request parameter to generate the
output XML ...

                        ByteArrayOutputStream baos = new
ByteArrayOutputStream();

                        //baos contains the output XML ...

                        DataSource ds = new ByteArrayDataSource(new
ByteArrayInputStream(baos.toByteArray()), null);
                dh = new DataHandler(ds);
                }
                catch (Exception e) {
                        e.printStackTrace();
                }
                finally {
                        return dh;
                }
        }
}

I read in a post in the archive that for RPC service, the service method
should return a DataHandler and it will be sent to the client as an
attachment.  Is this correct??

2) In the Deployment Descriptor on the server, do I need to add a
<isd:mappings> node to specify what serializer/deserializer I need to
use?  If I use the above code and a Deployment Descriptor with no
<isd:mappings> node, I got an error "java.lang.IllegalArgumentException:
I only know how to serialize an 'org.w3c.dom.Element'."  Could someone
shed some light on the configuration of the Deployment Descriptor in
this case?

3) If you could provide some example codes on how to implement RPC
service responding with attachment, it would be most helpful.

Thanks for you help!

JW