[Solved] Customized Serializer

[Han Ming Ong <ha...@chirpyfish.org>]

I guess my mail was way too long for people to actually read it :)

Anyway, based on the input of one kind soul, I explored further and 
finally hit on something that worked. It might not be the right way but 
it worked for now and I just want to share with the list, in case 
someone else is banging his head on the wall:

1. Using a customized Encoding Style URI besides 
Constants.NS_URI_SOAP_ENC always result in an exception something like 
"Caught SOAPException (SOAP-ENV:Client): No Serializer found to 
serialize a 'org.apache.soap.rpc.Parameter' using encoding style 
'http://xxx.com/test'.

2. Using Constants.NS_URI_SOAP_ENC works. I made a mistake in my 
serializer. I forgot the end tag
"</PurchaseOrder>". So if I had added

	sink.write("</" + context + '>');

   It worked for me.

That's all, Han Ming

> From: Han Ming Ong <ha...@chirpyfish.org>
> Date: Sun Jan 27, 2002  03:55:45  PM US/Pacific
> To: soap-user@xml.apache.org
> Subject: Customized Serializer
>
> Hi folks,
>
> Short:
>   I know how to use a BeanSerializer or sub class of a BeanSerializer 
> to serialize a customized class. I usually use 
> Constants.NS_URI_SOAP_ENC when I insert it into SOAPMappingRegistry.
>
>   But I would like to make use of a generic XML Serializer (e.g. 
> http://www.csse.monash.edu.au/~bren/JSX/)
> What encoding style should I use?
>
>
>
> Long:
>
>   This is my customized Java class:
>
>   public class PurchaseOrder {
> 	...
>   }
>
>   I would like to make use of a generic Java XML Serializer (e.g 
> http://www.csse.monash.edu.au/~bren/JSX/) as the Serializer and 
> Deserializer.
>
> public class PurchaseOrderSerializer implements Serializer, 
> Deserializer {
>     public void marshall(String inScopeEncStyle, Class javaType, Object 
> src, Object context, Writer sink, NSStack nsStack, 
> XMLJavaMappingRegistry xjmr, SOAPContext ctx) throws 
> IllegalArgumentException, IOException {
>
>         nsStack.pushScope();
>
>         SoapEncUtils.generateStructureHeader(inScopeEncStyle, javaType, 
> context, sink, nsStack, xjmr);
>
> 	// Magically obtain a serialized XML string, for example using JSX
>         String xml = ....
>
>         sink.write(xml);
>
>         nsStack.popScope();
>     }
>
>     public Bean unmarshall(String inScopeEncStyle, QName elementType, 
> Node src, XMLJavaMappingRegistry xjmr, SOAPContext ctx) throws 
> IllegalArgumentException {
>         Element root = (Element) src;
>         PurchaseOrder target;
>
>         // This is sad.
>         String xml = DOMWriter.nodeToString(src);
>
> 	target = (PurchaseOrder)....  // Use JSX to get back object
>
>          return new Bean(PurchaseOrder.class, target);
> }
>
> So on the server end, I created this deployment descriptor
>
> <isd:service xmlns:isd="http://xml.apache.org/xml-soap/deployment"
>              id="urn:myServer">
>   <isd:provider type="java"
>                 scope="Application"
>                 methods="SubmitOrder1">
>     <isd:java class="xxx.com.Application" static="true"/>
>   </isd:provider>
>
>   
> <isd:faultListener>org.apache.soap.server.DOMFaultListener</isd:faultListener>
>
>   <isd:mappings>
>     <isd:map encodingStyle="http://xxx.com/test"
>              xmlns:x="urn:wo-xml-demo" qname="x:PurchaseOrder"
>              javaType="xxx.com.PurchaseOrder"
>              java2XMLClassName="xxx.com.PurchaseOrderSerializer"
>              
> xml2JavaClassName="xxx.com.PurchaseOrderSerializerOrderSerializer"/>
>   </isd:mappings>
> </isd:service>
>
>
> This is how I execute my call from client
>
>         PurchaseOrderSerializer poSer = new PurchaseOrderSerializer();
>         SOAPMappingRegistry   smr   = new SOAPMappingRegistry();
>         String myEnc = "http://xxx.com/test";
>         // Map the types.
>         smr.mapTypes(myEnc, new QName("urn:wo-xml-demo", 
> "PurchaseOrder"), PurchaseOrder.class, poSer, poSer);
>
>         // Build the call.
>         call.setSOAPMappingRegistry(smr);
>         call.setTargetObjectURI("urn:myServer");
>         call.setMethodName("SubmitOrder1");
>         call.setEncodingStyleURI(Constants.NS_URI_SOAP_ENC);
>         params.addElement(new Parameter("CustomerID", 
> java.lang.String.class, pin, Constants.NS_URI_SOAP_ENC));
>         params.addElement(new Parameter("PurchaseOrder", 
> PurchaseOrder.class, po, myEnc));
>         call.setParams(params);
>
>         // Invoke the call.
>         try {
>             resp = call.invoke(serviceURL, "");
>         } catch (SOAPException e) {
>             System.out.print("Caught SOAPException (" + 
> e.getFaultCode() + "): " + e.getMessage());
>         }
>
>
> Problems:
>
> I always get a SOAPException, something like "Caught SOAPException 
> (SOAP-ENV:Client): No Serializer found to serialize a 
> 'org.apache.soap.rpc.Parameter' using encoding style 
> 'http://xxx.com/test'.
> (Here, I'm kind of surprised that the class is not xxx.com.PurchaseOrder
>
> If I used Constants.NS_URI_SOAP_ENC, the exception would be
>
> Caught SOAPException (SOAP-ENV:Client): Parsing error, response was:
> The element type "faultstring" must be terminated by the matching 
> end-tag "</faultstring>".
>
> I also tried Constants.NS_URI_LITERAL_XML and Constants.NS_URI_XMI_ENC  
> but no success.
>
> Help please?
>