I am working a salesforce integration project. We are making n number of web service calls to third party services. Now I have to implement a logger , where I need to store the soap request and response in xml format. Most preferable is the same soap request and response xml.
How I can intercept this request and response , in apex problematically ?
Is it the only option left to xml serialize my request and response explicitly ?
Your options are to extract the CALLOUT_REQUEST from the debug log (Callout category at the Info level) or to make the SOAP request via Apex. The former will be problematic as it needs to occur after the transaction completes. That's fine for debugging, but not so easy for production. Also, the CALLOUT_REQUEST logging isn't generated in every environment.
I've made an alternative version of Wsdl2Apex that generates the required Apex from the WSDL. You can get it for free in the FuseIT SFDC Explorer (Disclosure: This is my current employer).
After selecting the WSDL, change the Select Method Type to "SOAP and HTTP".
The resulting Apex class that gets generated will have an addition method with the _Http suffix that uses an HttpRequest and generates the XML required. You could log that XML as required.
There is also the open source version of Wsdl2Apex. That would take a bit of work, but you could modify the generated Apex to log the request. It would probably be easier to log the request objects that are passed to WebServiceCallout.invoke rather than the XML that results.
The order of the xsd:sequence elements for a complexType that you define does appear to be alphabetical. At the very least, you have no other way to control the order of the elements within the sequence.
I don't think you can remove the 'result' element from the generated *Response elements. It's part of the mechanism that if used for handling collection parameters.
There should be no need to prefix the namespace to the nodes when the targetNamespace is defined. That said, as long as the inbound SOAP request matches the WSDL schema it should be fine to specify the namespace on each element.
Best Answer
When you create a Proxy Class from WSDL to call web service it contain all the code.
If you want to debug log in function you can find that function in your proxy class (Generated from WSDL) and intercept all XML. If you want to do it for all request then you need to study the Proxy class and find best place for your interceptor.