[POC] C5 - Enabling SOAP support for BPEL with Apache CXF integration

The implementation exposes soap webservices by dynamically loaded wsdl files.

The extension points used in Apache CXF are as follows

• To intercept the request message we have extended the org.apache.cxf.phase.AbstractPhaseInterceptor class under RECEIVE phase and have overridden the handleMessage method.
• To intercept the Response message we have extended the org.apache.cxf.phase.AbstractPhaseInterceptor class under PRE_STREAM phase and have overridden the handleMessage method.
• Both of the above classes are registered into the interceptor chain at the server initialization.
• In-order to inject the message into ODE, we have extended the org.apache.cxf.service.invoker.AbstractInvoker class.
• org.apache.cxf.wsdl11.WSDLServiceFactory is used to create the server from the wsdl dynamically.
• org.apache.cxf.binding.soap.SoapBindingFactory is used to register SOAP bindings configurations.

Currently we are facing a limitation where org.apache.cxf.endpoint.Server[1] only allows to set one address endpoint per object. Therefore we have to create an array of Server objects to interact with multiple wsdl files.

[1] https://cxf.apache.org/javadoc/latest/org/apache/cxf/endpoint/Server.html