Claus,
Can you please submit a stripped down test that we can use to recreate the problem and
log it as a
bug in bugzilla?
Thanks,
dims
--- Claus Nyhus Christensen <[EMAIL PROTECTED]> wrote:
>
> Hi
>
> I am trying to create a simple handler which alters the content of the
> SOPABody of an incoming SOAP message.
>
> The web service I am using is a simple "echo" web service with a single
> method called echo. The methods takes a string and just returns it.
>
> The code for the handler is as follows:
>
> package com.trifork.eas.test.webservices.echoservice;
>
> import java.io.*;
> import java.io.InputStream;
> import java.util.*;
> import java.util.Iterator;
>
> import javax.xml.namespace.QName;
> import javax.xml.rpc.handler.*;
> import javax.xml.rpc.handler.soap.SOAPMessageContext;
> import javax.xml.soap.*;
> import javax.xml.soap.SOAPMessage;
> import javax.xml.transform.stream.*;
>
> /**
> * Created: Jan 20, 2003
> *
> * @author Claus Nyhus Christensen <[EMAIL PROTECTED]>
> */
> public class EchoServiceServerHandler implements Handler {
>
> public boolean handleRequest(MessageContext messageContext) {
>
> try {
> SOAPMessageContext soapMsgCtx = (SOAPMessageContext)
> messageContext;
> SOAPMessage soapMsg = soapMsgCtx.getMessage();
> SOAPPart soapPart = soapMsg.getSOAPPart();
> SOAPEnvelope soapEnvelope = soapPart.getEnvelope();
> soapEnvelope.getBody().detachNode();
> SOAPBody soapBody = soapEnvelope.addBody();
> SOAPBodyElement echoElement =
> soapBody.addBodyElement(soapEnvelope.createName("echo", "ns1",
> "http://soapinterop.org/";));
> SOAPElement argElement = echoElement.addChildElement("arg0");
> argElement =
> argElement.addAttribute(soapEnvelope.createName("type", "xsi",
> "http://www.w3.org/2001/XMLSchema-instance";), "xsd:string");
> argElement.addTextNode("a new string");
> soapMsg.saveChanges();
>
> } catch (Exception e) {
> e.printStackTrace();
> }
>
> return true;
> }
>
> ...
>
> }
>
> Now, when my client tries to call the web service, I get the following
> exception:
>
> AxisFault
> faultCode:
> {http://schemas.xmlsoap.org/soap/envelope/}Server.userException
> faultSubcode:
> faultString: java.lang.Exception: No deserialization context to use in
> MessageElement.getValueAsType()!
> faultActor: null
> faultNode: null
> faultDetail:
> stackTrace: java.lang.Exception: No deserialization context to
> use in
> MessageElement.getValueAsType()!
> at
> org.apache.axis.message.MessageElement.getValueAsType(MessageElement.java:544)
> at
> org.apache.axis.providers.java.RPCProvider.processMessage(RPCProvider.java:150)
> at
> org.apache.axis.providers.java.JavaProvider.invoke(JavaProvider.java:332)
> at
> org.apache.axis.strategies.InvocationStrategy.visit(InvocationStrategy.java:71)
> at org.apache.axis.SimpleChain.doVisiting(SimpleChain.java:156)
> at org.apache.axis.SimpleChain.invoke(SimpleChain.java:126)
> at
> org.apache.axis.handlers.soap.SOAPService.invoke(SOAPService.java:469)
> at org.apache.axis.server.AxisServer.invoke(AxisServer.java:326)
> at
> org.apache.axis.transport.http.AxisServlet.doPost(AxisServlet.java:782)
> ....
>
> I have been looking into the code, and it seems that the way the
> original SOAPBody is build is different from the way it is done when you
> use the JAXM methods on the SOAPBody class.
>
> I have tried the same example using the JAXRPC/SAAJ reference
> implementations and it works just fine there.
>
> To me it seems that:
>
> 1. I am doing something completely wrong in my handler
> or
> 2. The addBodyElement on the SOAPBody class is not working as is should
>
> If you agree with me that number 2 is the case, I would like to help
> create a fix. But I cannot figure out how I am going to be able to get a
> DeserializationContext in the SOAPBody class.
>
> A related problem occur if you use the addChildElement on SOAPBody
> instead of addBodyElement. When you do this a new MessageElement is
> added to the SOAPBody. However, this will result in a ClassCastException
> in the processMessage of the RPCProvider class. Line 141 and 142 gives
> the problem:
> if (!(bodies.get(bNum) instanceof RPCElement)) {
> SOAPBodyElement bodyEl = (SOAPBodyElement)bodies.get(bNum);
>
> Since the MessageElement is not an instance of RPCElement, it is cast to
> a SOAPBodyElement. This will result in the ClassCastException. This case
> also works fine on the JAXRPC/SAAJ reference implementation.
>
> The fix seems to be to overwrite the addChildElement methods in SOAPBody
> (which it inherits from MessageElement) to make sure that
> SOAPBodyElements (or maybe RPCElement) are always added. However, this
> fix will have the same problem with the DeserializationContext as stated
> above.
>
>
> I hope this mail was not to long, and was posted to the right
> mailinglist :)
>
> Cheers
>
> --
> Claus Nyhus Christensen
> Software Engineer, M. Sc. CS.
>
> Trifork, Margrethepladsen 3, DK-8000 ?rhus C, Denmark
> Phone: +45 8732 8787 / Fax: +45 8732 8788 / http://www.trifork.com
>
>
=====
Davanum Srinivas - http://xml.apache.org/~dims/
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