Re: .NET client omits null arguments

[Tim Dierks <ti...@yahoo.com>]

Scott,

Your suggestion works fine.  I had hoped to avoid
editing the C# proxy file generated by the Microsoft
wsdl utility, but I guess there's no way around it.

Thanks for the help!

Tim Dierks

--- Scott Nichol <sn...@scottnichol.com> wrote:
> Here's the short of it:
> 
> 1. You must use wsdl.exe to generate a proxy class
> for the service (or
> write a proxy manually).  You cannot do "Add Web
> Reference", as that
> re-generates the proxy code whenever you rebuild the
> project (VS.NET).
> 
> 2. You must add a SoapElement attribute for each
> method parameter that
> specifies the parameter is nullable, e.g.
> 
>     public String echoString([SoapElement("s",
> IsNullable=true)] String
> s) {...}
> 
> 3. .NET will now send an XML element for every
> parameter, but for null
> parameters it will not send an xsi:type attribute,
> just xsi:null (note:
> this is a bug: it should send xsi:nil for the 2001
> schema).  Therefore,
> you must add a mapping to your service's deployment
> descriptor for every
> parameter name, e.g.
> 
>     <isd:map
>
encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
>              xmlns:x="" qname="x:s"
> 
>
xml2JavaClassName="org.apache.soap.encoding.soapenc.StringDeserializer"/
> >
> 
> Scott Nichol
> 
> ----- Original Message -----
> From: "Tim Dierks" <ti...@yahoo.com>
> To: <so...@xml.apache.org>
> Sent: Thursday, October 31, 2002 11:49 AM
> Subject: .NET client omits null arguments
> 
> 
> > I am having a problem with a .NET client omitting
> null
> > arguments from messages sent to my Apache SOAP
> (2.3.1)
> > service.  For example, SOAP service method
> signature
> > is:
> >
> >   public int myMethod(String arg1, String arg2);
> >
> > My .NET C# client makes an call to the SOAP
> service
> > like this:
> >
> >    int result = myMethod(arg1, null);
> >
> > If arg2 is null, then arg2 is left out altogether
> from
> > the message sent to my Apache SOAP service.  So
> Apache
> > SOAP generates a FAULT with the error "no
> signature
> > match", since it received only one argument
> instead of
> > two.
> >
> > Has anyone encountered this problem and figured
> out a
> > solution?
> >
> > Thanks,
> >
> > Tim Dierks
> >
> >
> >
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