RE: Nullable primitives from Java webservice received as null in .

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Hi Steven,

We use the WSDL tool to generate the webservice proxy, and out of the box,
it's generating the nullable types (int? in this case). So there aren't any
issues when dealing with actual nulls when they occur.

I've talked with our Java server guys and apparently we're stuck with
RCP/encoded, as we have quite complex and large object graphs in the data
that we send, including bidirectional relationships (ie parent <=> child).
The size of the SOAP messages are already a performance issue for us
(surprise surprise), so any extra data in the messages would unfortunately
only make it worse, even if we did manage to avoid the bidirectional
relationships.

As for publishing the service, unfortunately I don't think that can happen.
I work at a bank, so I'm a long way behind a firewall and don't have the
privileges to make any services public.

Thanks for your help so far. It's looking like our best/only option is to
creata small wrapper classes around the nullable primitives that we use, and
provide implicit conversions on the .Net side. It could be worse.

Niall

"Steven Cheng[MSFT]" wrote:

Hello Niall,

Yes, there does existing some existing thread discussing on the similar
issues in the newsgroup. I remember the issue you refered is related to a
custmo value object's boolean member, and we haven' been able to get
progress in that thread. For your scenario, I've got that you're just
sending some primitive values as web method's parameters. I think your
analysis below is reasonable

================
It seems to me that the .Net client is seeing "xsd:int" as the type and
treating it as a primitive, and therefore not following the references.
================

Actually, such problems mostly occurs when the webservice is defined as
"Rpc/Encoded" format instead of "Document/Literal", rpc/encoded style SOAP
message is likely causing interop issues since the client ans server are
difficult to followup a consistent SOAP message format(through XSD schema).
Since you're using .net 2.0(WSE 3.0), have you tried manually modify the
.net client proxy code and change the parameter object's type to Nullable
types in .net 2.0? This can help wrapper a primitive type in .net as a
reference type(without using a wrapper class).

#Nullable Class
http://msdn2.microsoft.com/en-us/library/fs5xdbk8.aspx

Also, I'm wondering whether it is convenient that you provide me a publich
accessible service endpoint address (demonstrate your current java
service). If so, I'd like to perform some local tests against it.

Please let me know if you have any other concerns.

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead



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