Greeting Folks,
I have what seems like a question which many might ask, but after searching
through the various Axis docs, along w/ some of the reccommended reading,
as well as perusing the archives of this list, I remain unclear on the
answer, so at the risk of proving myself an idiot for asking, here goes.
First a little background. I'm working w/ RPC style services which are
written in Java and act as a middle tier btw the client app and a 3rd party
ERP API, which defines a number of methods and their associated complex
input & output parameters mapped to Java classes. The complex types consist
of "fields" which corrspond to types all from those listed in the standard
mappings btw SOAP/XML and Java, as defined in Axis user guide. Custom WSDD
files specify the service's allowed methods & bean mappings, which is
deployed to Axis using the AdminClient tool. All of this has been
developed, deployed and tested on Axis 1.1.
My question regards how to get, if possible, the service to include some of
the metadata which the backend API makes available regarding each
parameter, such as its size, default value, description, and most
importantly whether or not the parameter's required. I gather that the
nillable, minOccurs, and maxOccurs attributes are meant to address required
elements, but it's not clear to me how to control how these attributes
appear in the service's WSDL representation. Currently, the nillable
attribute always appears set to "true".
Can somebody point me towards some documentation that explains how to
encode this information either into the deployment descriptor, or into the
java classes themselves so that they can be exported by the service's WSDL
in order to implement client-side validation?
Thanks in advance, Albert
