NULL ARRAY PROBLEM... in DOCUMENT/LITERAL type web service

Question

let method signature is like this,
public int ABC(String[] a);
i am sending an null array from client side, like
ABC(null);
but on web service layer i am getting an array with length 1
and element of this array is null.
for example, {null} where i should get simple null, not an array with null element.

Answer 1

My guess is that it is because .NET defaults to generating a document style interface whereas JDeveloper defaults to generating an RPC style interface. The end result is that JDeveloper wraps the document interface in something that looks document like - thus your client. To see how to handle this right now, check out this sample - you have to parse the XML:
http://otn.oracle.com/tech/webservices/htdocs/series/net/content.html
In the preview of JDeveloper 9.0.3 which is due quite soon - next few weeks roughly (crossing my fingers) - JDeveloper will wrap .NET document based Web services in a much more elegant wrapper - giving you exactly what you are looking for - a method called Validate rather than a vector of Elements.
What I don't understand in your sample, however, is that you have WSDL generated from JDeveloper versus WSDL generated from .NET. Did you also do an implementation of the validate method in Java too?
Mike.