I've been looking into implementing unwrapping of method call parameters
for JiBX. The current code generation approach uses several different
XSLT templates, with some templates just generating generic code for
handling the service operations while the details of conversions to and
from XML are handled by toOm()/toEnvelope() and fromOm() that are
specific to the data binding approach being used. For unwrapped handling
I think we need to change the code generation to use an in-line
approach, where the data binding framework is invoked to generate code
that gets embedded directly within the operation method on the client
stub, or within the invokeBusinessLogic method of the message receiver
on the server. The reason I'm suggesting this is because the current
approach of calling other methods gets very messy when you're passing or
returning a list of objects, rather than just a single object.
I don't know how well this will fit with the current
org.apache.axis2.wsdl.codegen.emitter.AxisServiceBasedMultiLanguageEmitter.
At a minimum, it's going to need to pass additional information in the
XML documents used to drive the code generation (since each data binding
framework will have it's own approach to handle unwrapping, and will
need to pass the appropriate information to its code generation
template). I can just start extending the current code to support
unwrapped with JiBX, but figured I'd bring it up for discussion first to
see if anyone else is working in this area.
To enable unwrapping I assume we'll want a WSDL2Java flag, as in Axis1.
Each framework would be able to check this flag and then set
per-operation flags to control the code generation, selecting between
the current form (toOm()/toEnvelope() and fromOm()) and an unwrapped
approach. The AxisServiceBasedMultiLanguageEmitter would then use this
per-operation flag to control how that operation is generated.
- Dennis
--
Dennis M. Sosnoski
SOA, Web Services, and XML
Training and Consulting
http://www.sosnoski.com - http://www.sosnoski.co.nz
Seattle, WA +1-425-296-6194 - Wellington, NZ +64-4-298-6117
